C Series
Showing 41–80 of 349 results
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QSCConnecting Rod Bearing 0.020″ Cummins Engine ISC – Engine QSC
Connecting Rod Bearing 0.020″ Cummins Engine ISC 8.3 – Engine QSC 8.3
It is installed between the connecting rod head and the crankshaft connecting rod journal. It creates a lubricated sliding surface that reduces friction and wear and maintains the proper clearance between the connecting rod and the crankshaft. It is used when the crankshaft connecting rod journal has been ground down by 0.020″.
Replacement parts for Cummins C / ISC / QSC / ISL / QSL applications.
Before the sale, it’s a good idea to check the ESN, CPL, and the actual length of the crankshaft.
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CumminsConnecting Rod Bearing STD Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Connecting Rod Bearing STD Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3 / CTAA 8.3
It is installed between the connecting rod head and the crankshaft connecting rod journal. It creates a lubricated sliding surface that reduces friction and wear and maintains the proper clearance between the connecting rod and the crankshaft. It is a standard (STD) bronze bushing. It should not be confused with undersize or repair versions intended for ground crankshafts.
Replacement parts for Cummins C / ISC / QSC / ISL / QSL applications
This is a standard (STD) bronze bushing. It should not be confused with undersize or repair versions intended for honed crankshafts. Before purchasing, I recommend checking the ESN (Engine Serial Number), CPL, and the crankshaft journal diameter.
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CumminsIntake Manifold Gasket Cummins Engine ISC
Connection Gasket / Intake Manifold Cover Gasket Cummins Engine ISC
It is a gasket for the intake system, installed in the intake manifold area, designed to seal the mating surface and prevent air or pressure leaks in the intake circuit; it is used on intake manifolds equipped with an air intake heater.
Used on Cummins ISC, ISL / ISL9 – 8.9 L, and QSL / QSL9 – 8.9 L engines
Before placing an order, I always recommend checking the ESN (Engine Serial Number), CPL, and intake manifold configuration, because not all ISL/QSL models necessarily use the same heater/manifold configuration.
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TURBOTurbocharger Oil Drain Connection Cummins Engine ISC – ISL
Turbocharger Oil Drain Connection Cummins Engine ISC – ISL
Conclusion: Part number 5272344 is a genuine Cummins turbocharger oil return pipe/connection, primarily used on 8.9-liter ISC/ISL EPA13 engines. To confirm with 100% certainty that it is the correct part for a specific engine, the ESN (Engine Serial Number) is required.
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Cylinder HeadConnection, Wet Manifold for Cummins Engine 4BT, 6BT,6CT & ISB6.7
Connection, Wet Manifold for Cummins Engine 4BT, 6BT,6CT & ISB6.7
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CumminsGasket Set Lower Cummins Engine 6C 8.3 – 6CT 8.3 – 6CTA 8.3
Gasket Set Lower Cummins Engine 6C.83- 6CT 8.3- 6CTA 8.3
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CumminsCover Plate Gasket Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Cover Plate Gasket Cummins Engine 6C 8.3 -Cummins Engine 6CT 8.3 -Cummins Engine 6CTA 8.3
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Cummins
Cover Plate Gasket Cummins Engine ISC 8.3 – Engine QSC 8.3
Cover Plate Gasket Cummins Engine ISC 8.3-Cummins Engine QSC 8.3
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CrankshaftRear Crankshaft Seal Kit Cummins Engine ISC – Engine QSC
Rear Oil Seal Kit Cummins Engine ISC 8.3 – Engine QSC 8.3
Rear crankshaft oil seal kit with a double-lip seal, designed for Cummins applications with a wet flywheel/clutch housing. Location: rear end of the crankshaft, transmission/flywheel side. Documented equivalent seal made of PTFE. Its function is to prevent engine oil from leaking from the rear end of the crankshaft, maintaining a seal during crankshaft rotation.
The following are listed: ISB4.5, ISB6.7, QSB4.5, QSB6.7, 6C8.3, 6CT8.3, 6CTA8.3, ISC, QSC, ISL, and QSL for applications with a wet clutch housing. And on other engines: 4BT3.9, 6BT5.9, 6CT8.3, 6CTA8.3, 6CTAA8.3, and QSL9
Always verify the ESN (Engine Serial Number), CPL, and wet/dry flywheel housing configuration, because the same engine may use a different rear seal depending on the configuration.
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CumminsCrankshaft Bare Without Gear Cummins Engine 6C 8.3
Crankshaft Bare Without Gear Cummins Engine 6C 8.3
The crankshaft converts the reciprocating motion of the pistons and connecting rods into rotational motion, transferring the torque produced by combustion to the flywheel and transmission. It is mounted longitudinally at the bottom of the engine block, supported by main bearings. The connecting rods are attached to its crankpins. It is made of forged or heat-treated high-strength steel.
Compatible engines: Cummins 6C 8.3 / 6CT 8.3 / 6CTA 8.3.
For other parts, such as QSC, QSL, ISC and ISL, it’s always a good idea to check the ESN and CPL, or the Cummins OEM catalog, because the diameters of the pins, gears, and counterweights, as well as the shaft configuration, may vary between CPLs and generations.
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CumminsCrankshaft Cummins Engine 6C 8.3
Crankshaft Cummins Engine 6C 8.3
The crankshaft converts the reciprocating motion of the pistons and connecting rods into rotational motion, transferring the torque produced by combustion to the flywheel and transmission. It is mounted longitudinally at the bottom of the engine block, supported by main bearings. The connecting rods are attached to its crankpins. It is made of forged or heat-treated high-strength steel.
Compatible engines: Cummins 6C 8.3
Cummins recommends checking spare parts using the ESN and the specific engine catalogue/QuickServe, as the engine configuration, CPL and overhaul status may affect the correct part number, even within the same engine family.
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Cummins
Crankshaft Bare Without Gear Cummins Engine 6CT 8.3
Crankshaft Bare Without Gear Cummins Engine 6CT 8.3
The crankshaft converts the reciprocating motion of the pistons and connecting rods into rotational motion, transferring the torque produced by combustion to the flywheel and transmission. It is mounted longitudinally at the bottom of the engine block, supported by main bearings. The connecting rods are attached to its crankpins. It is made of forged or heat-treated high-strength steel.
Compatible engines: Cummins 6C 8.3 / 6CT 8.3 / 6CTA 8.3.
For other parts, such as QSC, QSL, ISC and ISL, it’s always a good idea to check the ESN and CPL, or the Cummins OEM catalog, because the diameters of the pins, gears, and counterweights, as well as the shaft configuration, may vary between CPLs and generations.
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Cummins
Crankshaft Bare Without Gear Cummins Engine 6CTA 8.3
Crankshaft Bare Without Gear Cummins Engine 6CTA 8.3
The crankshaft converts the reciprocating motion of the pistons and connecting rods into rotational motion, transferring the torque produced by combustion to the flywheel and transmission. It is mounted longitudinally at the bottom of the engine block, supported by main bearings. The connecting rods are attached to its crankpins. It is made of forged or heat-treated high-strength steel.
Compatible engines: Cummins 6C 8.3 / 6CT 8.3 / 6CTA 8.3.
For other parts, such as QSC, QSL, ISC and ISL, it’s always a good idea to check the ESN and CPL, or the Cummins OEM catalog, because the diameters of the pins, gears, and counterweights, as well as the shaft configuration, may vary between CPLs and generations.
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CumminsCrankshaft Cummins Engine Engine ISC
Crankshaft Cummins Engine ISC / ISC 8.9L
It receives the force generated by combustion through the pistons and connecting rods and converts the reciprocating motion of the pistons into rotational motion. It is mounted at the bottom of the engine block/crankcase, running longitudinally relative to the engine. Made of forged steel.
Cummins lists the ISL 8.9L and ISC 8.9L / ISC engines among the primary EPA02 applications. QSC / QSC8.3 / QSL / QSL8.9 / QSL9 engines are listed in various aftermarket catalogs under their respective categories (C/ISC/QSC/ISL/QSL), but this does not mean they are automatically applicable to all engines in those categories. They are also associated with ISLe/6L and industrial applications.
Verification via ESN (Engine Serial Number), CPL (Control Parts List), Cummins QuickServe, the number on the original part, the OEM catalog, or confirmation from the distributor.
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Cummins
Crankshaft Cummins Engine Engine QSC
Crankshaft Cummins Engine QSC / QSC 8.3
It receives the force generated by combustion through the pistons and connecting rods and converts the reciprocating motion of the pistons into rotational motion. It is mounted at the bottom of the engine block/crankcase, running longitudinally relative to the engine. Made of forged steel.
Cummins lists the ISL 8.9L and ISC 8.9L / ISC engines among the primary EPA02 applications. QSC / QSC8.3 / QSL / QSL8.9 / QSL9 engines are listed in various aftermarket catalogs under their respective categories (C/ISC/QSC/ISL/QSL), but this does not mean they are automatically applicable to all engines in those categories. They are also associated with ISLe/6L and industrial applications.
Verification via ESN (Engine Serial Number), CPL (Control Parts List), Cummins QuickServe, the number on the original part, the OEM catalog, or confirmation from the distributor.
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CumminsLong Snout Crankshaft Cummins Engine ISC
Long Snout External Damper Cummins Engine ISC 8.3
Crankshaft for a 6-cylinder diesel engine, external damper / externally balanced configuration. Long-snout configuration with 5 front holes, one keyway, and an external damper. The crankshaft is installed at the bottom of the engine block, supported by main bearings. It converts the reciprocating motion of the pistons and connecting rods into rotational motion, transmitting the torque produced by combustion to the flywheel and the transmission. Forged steel, with a heat-treating process.
Used on the L10, LT10, ISC 8.3, ISL 8.9, and QSL 8.9 / QSL 9 engines.
Always verify the engine serial number (ESN), CPL, number of nose holes, nose length, damper type, and original OEM number before placing an order. The “L10” model alone is not sufficient, because Cummins uses different crankshaft configurations within the same family.
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Fresh Water PumpHeat Exchanger O- Ring Seal Cummins Engine QSC
Heat Exchanger O- Ring Seal Cummins – Engine QSC
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Fresh Water PumpHeat Exchanger O- Ring Seal Cummins Engine QSC
Heat Exchanger O- Ring Seal Cummins Engine QSC
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CumminsRectangular Ring Seal Cummins Engine 6C – Engine 6CT – Engine 6CTA
Water Inlet Seal Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Water inlet connection for the cooling circuit. It seals the joint between the components of the cooling circuit, preventing coolant leaks and maintaining the system’s proper seal. It is an elastomeric gasket designed to withstand coolant, temperature, pressure, and thermal cycling.
Observed on 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL 8.9, QSL 8.9 engines.
It is advisable to always verify using ESN + CPL, the Cummins QuickServe catalog, or the original part number installed. This prevents errors caused by differences in model year, water inlet configuration, cooling system, and part replacements.
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Fresh Water Pump
Rectangular Ring Seal Cummins Engine ISC – Engine QSC
Water Inlet Seal Cummins Engine ISC 8.3 – Engine QSC 8.3
Water inlet connection for the cooling circuit. It seals the joint between the components of the cooling circuit, preventing coolant leaks and maintaining the system’s proper seal. It is an elastomeric gasket designed to withstand coolant, temperature, pressure, and thermal cycling.
Observed on 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL 8.9, QSL 8.9 engines.
It is advisable to always verify using ESN + CPL, the Cummins QuickServe catalog, or the original part number installed. This prevents errors caused by differences in model year, water inlet configuration, cooling system, and part replacements.
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CumminsSealing O-Ring Cummins Engine 6C – Engine 6CT – 6CTA
O-Ring Seal Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
It seals the joint between mated components, preventing fluid leaks and maintaining circuit pressure. It is installed in a circular seat between two mated components of the fuel system, where it creates a seal that prevents diesel leaks and pressure loss. It is not an external engine block gasket. Some sources refer to this family of seals as Fuel Shaft O-Rings, so the application may be associated with the shaft/fuel system circuit area.
Observed on 6C 8.3 6CT 6CTA, ISC 8.3, QSC 8.3, ISL 8.9, QSL 8.9 engines.
We always recommend checking the ESN and CPL in the Cummins OEM catalog, because the same O-ring is used across different engine families, and the quantity and location may vary depending on the engine configuration.
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CumminsSealing O-Ring Cummins Engine 6C – Engine 6CT – Engine 6CTA
O-Ring Seal Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
It is located between the oil pump and its housing or fitting, providing a static seal between mating components and preventing leaks of oil or other fluids in the circuit where it is installed. It also appears in the section on the lubricating oil system/oil pump, but the exact location may vary depending on the CPL and configuration.
Observed on 6C 8.3 / 6CT / 6CTA, ISC 8.3, QSC 8.3, ISL 8.9/9, QSL 8.9/9, QSB 6.7, and ISB 6.7 engines.
We always recommend checking the ESN and CPL in the Cummins OEM catalog, because the same O-ring is used across different engine families, and the quantity and location may vary depending on the engine configuration.
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CumminsSealing O-Ring Cummins Engine 6C – Engine 6CT – Engine 6CTA
O-Ring Seal Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Used primarily in the fuel pump system, at the point where the pump connects to its housing or mounting surface, Cummins officially specifies it primarily for 8.9-liter ISC/ISL Tier 3 engines. It creates a seal between the mating surfaces of the fuel pump system, preventing leaks and maintaining proper circuit integrity. Made of Viton/FKM, 75 durometer, a material resistant to fuels, oils, and high temperatures.
Observed on 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL 8.9, ISL9 e QSL 8.9 engines.
Before selling or installing an engine, I always recommend verifying the engine’s ESN and CPL, either using Cummins QuickServe or the OEM catalog, or by checking the original number that was removed. The C/ISC/QSC/ISL/QSL family includes numerous revisions to the fuel system, and a cross-reference may only be valid for certain CPLs or configurations.
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ISC
Sealing O-Ring Cummins Engine ISC – Engine QSC
O-Ring Seal Cummins Engine ISC 8.3 – Engine QSC 8.3
It is located between the oil pump and its housing or fitting, providing a static seal between mating components and preventing leaks of oil or other fluids in the circuit where it is installed. It also appears in the section on the lubricating oil system/oil pump, but the exact location may vary depending on the CPL and configuration.
Observed on 6C 8.3 / 6CT / 6CTA, ISC 8.3, QSC 8.3, ISL 8.9/9, QSL 8.9/9, QSB 6.7, and ISB 6.7 engines.
We always recommend checking the ESN and CPL in the Cummins OEM catalog, because the same O-ring is used across different engine families, and the quantity and location may vary depending on the engine configuration.
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Fuel Pump
Sealing O-Ring Cummins Engine ISC – Engine QSC
O-Ring Seal Cummins Engine ISC 8.3 – Engine QSC 8.3
It seals the joint between mated components, preventing fluid leaks and maintaining circuit pressure. It is installed in a circular seat between two mated components of the fuel system, where it creates a seal that prevents diesel leaks and pressure loss. It is not an external engine block gasket. Some sources refer to this family of seals as Fuel Shaft O-Rings, so the application may be associated with the shaft/fuel system circuit area.
Observed on 6C 8.3 6CT 6CTA, ISC 8.3, QSC 8.3, ISL 8.9, QSL 8.9 engines.
We always recommend checking the ESN and CPL in the Cummins OEM catalog, because the same O-ring is used across different engine families, and the quantity and location may vary depending on the engine configuration.
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Fuel Pump
Sealing O-Ring Cummins Engine ISC – Engine QSC
O-Ring Seal Cummins Engine ISC 8.3 – Engine QSC 8.3
Used primarily in the fuel pump system, at the point where the pump connects to its housing or mounting surface, Cummins officially specifies it primarily for 8.9-liter ISC/ISL Tier 3 engines. It creates a seal between the mating surfaces of the fuel pump system, preventing leaks and maintaining proper circuit integrity. Made of Viton/FKM, 75 durometer, a material resistant to fuels, oils, and high temperatures.
Observed on 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL 8.9, ISL9 e QSL 8.9 engines.
Before selling or installing an engine, I always recommend verifying the engine’s ESN and CPL, either using Cummins QuickServe or the OEM catalog, or by checking the original number that was removed. The C/ISC/QSC/ISL/QSL family includes numerous revisions to the fuel system, and a cross-reference may only be valid for certain CPLs or configurations.
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CrankshaftRear Crankshaft Seal Kit Cummins Engine ISC – Engine QSC
Rear Main Seal Kit Cummins Engine ISC 8.3 – Engine QSC 8.3
The kit provides a seal at the rear of the crankshaft, preventing engine oil from leaking at the point where the crankshaft exits the engine block toward the flywheel/transmission housing. It is therefore installed at the rear of the engine block, on the flywheel side. The sealing component is typically made of a technical elastomer that is resistant to oil and high temperatures, combined with metal support/reinforcement elements.
Compatible engines: 4B, 4BT, 6B, 6BT, 6C, 6CT, 6CTA, ISB, QSB, ISC, QSC, ISL, QSL
However, we recommend checking the ESN/CPL before the sale: not all configurations within the same engine family necessarily use the same oil seal.
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CumminsRear Crankshaft Oil Seal Cummins Engine 6C- Engine 6CT – Engine 6CTA
Rear Main Seal Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Rear crankshaft oil seal located in the area where the engine block connects to the flywheel housing. Its function is to prevent engine oil from leaking around the rear end of the crankshaft and to limit the entry of contaminants. This family of oil seals is available with a PTFE sealing element.
Used on the following engines: 4B 3.9, 4BT 3.9, 4BTA 3.9, QSB 4.5, 6B 5.9, 6BT 5.9, 6BTA 5.9, ISB 5.9, QSB 5.9, ISB 6.7, QSB 6.7, B6.7, 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL 8.9, QSL 8.9 / QSL9.
With final verification via ESN/CPL for the specific configuration.
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ISC
Rear Crankshaft Oil Seal Cummins Engine ISC- Engine QSC
Rear Main Seal Cummins Engine ISC 8.3 – Engine QSC 8.3
Rear crankshaft oil seal located in the area where the engine block connects to the flywheel housing. Its function is to prevent engine oil from leaking around the rear end of the crankshaft and to limit the entry of contaminants. This family of oil seals is available with a PTFE sealing element.
Used on the following engines: 4B 3.9, 4BT 3.9, 4BTA 3.9, QSB 4.5, 6B 5.9, 6BT 5.9, 6BTA 5.9, ISB 5.9, QSB 5.9, ISB 6.7, QSB 6.7, B6.7, 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL 8.9, QSL 8.9 / QSL9.
With final verification via ESN/CPL for the specific configuration.
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CumminsFront Crankshaft Seal Kit Cummins Engine 6C – Engine 6CT – Engine 6CTA
Front Seal Service Kit Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
It is located at the front of the crankshaft, in the gear housing/front cover area. It prevents engine oil from leaking around the front end of the crankshaft. The oil seal is typically made of an oil- and temperature-resistant elastomer with a metal backing; the wear sleeve is made of metal and creates a new sealing surface on the shaft when the original sealing surface is worn.
Used on the 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL, QSL engines.
Always compare the ESN and CPL in Cummins QuickServe or the OEM catalog. Cummins allows you to search for parts using the Engine Serial Number and part number, and this is important because there may be different configurations of oil seals, sleeves, and front gear housings within the ISC/ISL/QSC/QSL models.
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CumminsFront Crankshaft Seal Kit Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Front Crankshaft Oil Seal Kit Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
The kit is fitted to the front of the crankshaft, at the front gear housing/front cover. Its function is to prevent engine oil from leaking around the crankshaft whilst it is rotating. It typically comprises a technical elastomer seal with a metal reinforcement and a metal support/cover.
Used on the 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL, QSL / QSL 9 engines.
Always check the ESN and CPL before sale, as there may be variations within the ISC/QSC/ISL/QSL families depending on configuration, year and front gear housing.
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Cummins
Front Crankshaft Seal Kit Cummins Engine ISC – Engine QSC
Front Crankshaft Oil Seal Kit Cummins Engine ISC 8.3 – Engine QSC 8.3
The kit is fitted to the front of the crankshaft, at the front gear housing/front cover. Its function is to prevent engine oil from leaking around the crankshaft whilst it is rotating. It typically comprises a technical elastomer seal with a metal reinforcement and a metal support/cover.
Used on the 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL, QSL / QSL 9 engines.
Always check the ESN and CPL before sale, as there may be variations within the ISC/QSC/ISL/QSL families depending on configuration, year and front gear housing.
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C Series
Front Crankshaft Seal Kit Cummins Engine ISC – Engine QSC
Front Seal Service Kit Cummins Engine ISC 8.3 – Engine QSC 8.3
It is located at the front of the crankshaft, in the gear housing/front cover area. It prevents engine oil from leaking around the front end of the crankshaft. The oil seal is typically made of an oil- and temperature-resistant elastomer with a metal backing; the wear sleeve is made of metal and creates a new sealing surface on the shaft when the original sealing surface is worn.
Used on the 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL, QSL engines.
Always compare the ESN and CPL in Cummins QuickServe or the OEM catalog. Cummins allows you to search for parts using the Engine Serial Number and part number, and this is important because there may be different configurations of oil seals, sleeves, and front gear housings within the ISC/ISL/QSC/QSL models.
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CumminsFront Crankshaft Wear Sleeve Cummins Engine 6C – Engine 6CT – Engine 6CTA
Front Crankshaft Quick Repair Sleeve Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
It is positioned at the front end of the crankshaft, where it contacts the front oil seal. It creates a new, smooth surface on the area of the crankshaft worn down by the standard oil seal. This allows the crankshaft to be salvaged without having to replace it. It is typically made of hardened or wear-resistant steel, with a machined surface designed to contact the oil seal lip.
Used on the 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC, QSC, ISL, QSL engines.
Always check the engine’s ESN and CPL, or consult the Cummins OEM catalog. There are variations in configuration and crankshaft seals, so compatibility with a specific engine must be confirmed before proceeding with a replacement.
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C Series
Front Crankshaft Wear Sleeve Cummins Engine ISC – Engine QSC
Front Crankshaft Quick Repair Sleeve Cummins Engine ISC – Engine QSC
It is positioned at the front end of the crankshaft, where it contacts the front oil seal. It creates a new, smooth surface on the area of the crankshaft worn down by the standard oil seal. This allows the crankshaft to be salvaged without having to replace it. It is typically made of hardened or wear-resistant steel, with a machined surface designed to contact the oil seal lip.
Used on the 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC, QSC, ISL, QSL engines.
Always check the engine’s ESN and CPL, or consult the Cummins OEM catalog. There are variations in configuration and crankshaft seals, so compatibility with a specific engine must be confirmed before proceeding with a replacement.
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Cummins
Rear Crankshaft Seal Kit Cummins Engine 6C – Engine 6CT – Engine 6CTA / 6CTAA
Rear Oil Seal Kit Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3 / 6CTAA 8.3
Rear crankshaft oil seal kit with a double-lip seal, designed for Cummins applications with a wet flywheel/clutch housing. Location: rear end of the crankshaft, transmission/flywheel side. Documented equivalent seal made of PTFE. Its function is to prevent engine oil from leaking from the rear end of the crankshaft, maintaining a seal during crankshaft rotation.
The following are listed: ISB4.5, ISB6.7, QSB4.5, QSB6.7, 6C8.3, 6CT8.3, 6CTA8.3, ISC, QSC, ISL, and QSL for applications with a wet clutch housing. And on other engines: 4BT3.9, 6BT5.9, 6CT8.3, 6CTA8.3, 6CTAA8.3, and QSL9
Always verify the ESN (Engine Serial Number), CPL, and wet/dry flywheel housing configuration, because the same engine may use a different rear seal depending on the configuration.
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CumminsComplete Cylinder Kit Cummins Engine 6C – Engine 6CT – Engine 6CTA
Cylinder Kit Cummins Engine 6C 8.3 /L – Engine 6CT 8.3 /L – Engine 6CTA 8.3 /L
This is a Cummins cylinder kit from the C Series 8.3 L family, specifically documented as a thin-wall/early block configuration, pre-1991. It is installed inside the cylinder block, one for each cylinder. The cylinder liner is mounted in the block; inside it, the piston operates, connected to the connecting rod via the piston pin. The kit restores the engine’s cylinder unit during an overhaul or in-frame repair. It includes the main wear components of the combustion system: piston, piston rings, piston pin, retainers, cylinder liner, and seal. It is used to restore compression, combustion gas sealing, oil control, and proper piston-to-cylinder fit.
Installed on Cummins 6C/L Series, ISC 8.3/L, QSC 8.3/L, ISL 8.9/9, and QSL 8.9 engines.
For this kit, I strongly recommend that you don’t just check the engine model. Check the ESN (Engine Serial Number) → CPL → Cummins QuickServe catalog → cylinder block number/casting number → early thin-wall vs. late thick-wall block → piston number → liner number → machine serial number (if applicable).
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Cummins
Complete Cylinder Kit Cummins Engine ISC – Engine QSC
Cylinder Kit Cummins Engine ISC 8.3 /L – Engine QSC 8.3 /L
This is a Cummins cylinder kit from the C Series 8.3 L family, specifically documented as a thin-wall/early block configuration, pre-1991. It is installed inside the cylinder block, one for each cylinder. The cylinder liner is mounted in the block; inside it, the piston operates, connected to the connecting rod via the piston pin. The kit restores the engine’s cylinder unit during an overhaul or in-frame repair. It includes the main wear components of the combustion system: piston, piston rings, piston pin, retainers, cylinder liner, and seal. It is used to restore compression, combustion gas sealing, oil control, and proper piston-to-cylinder fit.
Installed on Cummins 6C/L Series, ISC 8.3/L, QSC 8.3/L, ISL 8.9/9, and QSL 8.9 engines.
For this kit, I strongly recommend that you don’t just check the engine model. Check the ESN (Engine Serial Number) → CPL → Cummins QuickServe catalog → cylinder block number/casting number → early thin-wall vs. late thick-wall block → piston number → liner number → machine serial number (if applicable).
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Cylinder KitCylinder Kit Complete Cummins Engine 6C – Engine ISC – Engine ISL
Cylinder Kit Complete Cummins Engine 6C Engine ISC Engine ISL
Engine Piston: M-3923164 Liner Kit: M-3802407 Piston Ring Set: M-3802429
Piston Pin: M-3934046 Piston Pin Retainer: M-3920692
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