Gaskets
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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
(0 reviews)$232.71 Add to cart -
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
(0 reviews)$2.53 Add to cart -
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.
(0 reviews)$6.25 Add to cart -
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.
(0 reviews)$0.25 Add to cart -
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.
(0 reviews)$1.70 Add to cart -
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.
(0 reviews)$0.25 Add to cart -
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.
(0 reviews)$24.45 Add to cart -
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.
(0 reviews)$15.95 Add to cart -
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.
(0 reviews)$39.00 Add to cart -
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.
(0 reviews)$77.83 Add to cart -
CumminsRear 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.
(0 reviews)$39.46 Add to cart -
CumminsEGR Valve Gasket Cummins Engine 6C – Engine 6CT – Engine 6CTA
Exhaust Gas Recirculation Valve Gasket Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Installed in the EGR (Exhaust Gas Recirculation) circuit. It serves to create a seal between the EGR valve and the corresponding manifold/duct, preventing exhaust gas leaks during recirculation. A proper seal allows the EGR system to correctly route a portion of the exhaust gases back into the intake and contributes to the proper functioning of the emissions control system.
It is used on Cummins 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC, QSC, ISL 8.9, and QSL 8.9 / 9 engines.
I wouldn’t automatically consider all ISC/ISL/QSC/QSL units to be compatible. To ensure a proper sale, you need to verify the ESN/CPL and EGR configuration, because specifications can vary depending on the model year, emissions certification, and engine build.
(0 reviews)$5.75 Add to cart -
CumminsExhaust Manifold Gasket Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Exhaust Manifold Gasket Cummins Engine 6C.83-Cummins Engine 6CT 8.3-Cummins Engine 6CTA 8.3
(0 reviews)$4.15 Add to cart -
GasketsExhaust Manifold Gasket Engine Cummins
Exhaust Manifold Gasket Engine Cummins
(0 reviews)$1.50 Add to cart -
CumminsGear Housing Gasket Cummins Engine 6C 8.3 – Engine 6CT 8.3
Gear Housing Gasket Cummins Engine 6CT – Engine 6C 8.3
The ESN remains the most important check,
because the same engine model can be fitted with different
parts depending on the year of manufacture or the CPL(0 reviews)$43.20 Add to cart -
CumminsGasket – Front Gear Cover Cummins Engine 6CT 8.3 – Engine 6CT 8.3
Gasket – Front Gear Cover Cummins Engine 6CT 8.3-Cummins Engine 6CT 8.3
(0 reviews)$32.83 Add to cart -
CumminsGasket Connection Cummins Engine 6C 8.3 – Engine 6CT 8.3
Gasket Connection Cummins Engine 6CT 8.3-Cummins Engine 6CT 8.3
(0 reviews)$7.02 Add to cart -
CumminsGear Housing Gasket Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Gear Housing Gasket Cummins Engine 6C 8.3- Cummins Engine 6CT 8.3-Cummins Engine 6CTA 8.3
(0 reviews)$33.35 Add to cart -
CumminsHead Gasket Cummins Engine 6CT 8.3 – Engine 6CT 8.3
Head Gasket Cummins Engine 6CT 8.3-Cummins Engine 6CT 8.3
(0 reviews)$63.06 Add to cart -
CumminsHead Gasket Set Upper Cummins Engine 6CTA 8.3
Head Gasket Set Upper Cummins Engine 6CTA 8.3
(0 reviews)$327.26 Add to cart -
C SeriesGasket Set Upper Cummins Engine 6C 8.3 – 6CT 8.3 – 6CTA 8.3
Gasket Set Upper Cummins Engine 6C.83-Cummins Engine 6CT 8.3-Cummins Engine 6CTA 8.3
(0 reviews)$192.75 Add to cart -
CumminsIntake Manifold Gasket Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Intake Manifold Gasket Cummins Engine 6C 8.3 -Cummins Engine 6CT 8.3 -Cummins Engine 6CTA 8.3
(0 reviews)$9.85 Add to cart -
CumminsOil Cooler Core Inner Gasket Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Oil Cooler Core Inner Gasket Cummins Engine 6C 8.3- Cummins Engine 6CT 8.3-Cummins Engine 6CTA 8.3
(0 reviews)$7.66 Add to cart -
CumminsOil Pan Gasket Cummins Engine 6C 8.3 – Engine ISC 8.3 – Engine QSC 8.3
Oil Pan Gasket Cummins Engine 6C 8.3 – Engine ISC 8.3 – Engine QSC 8.3
The ESN remains the most important check,
because the same engine model can be fitted with different
parts depending on the year of manufacture or the CPL.(0 reviews)$118.86 Add to cart -
CumminsOil Pan Gasket Cummins Engine 6C 8.3L – Engine ISC 8.3L – Engine QSC 8.3L
Oil Pan Gasket Cummins Engine 6C 8.3L – Engine ISC 8.3L – Engine QSC 8.3L
Some catalogs extend the application to ISC, QSC, ISL, and QSL. Final compatibility must be verified using the ESN and CPL, as the oil pan may vary depending on the configuration and application.
(0 reviews)$147.05 Add to cart -
CumminsRear Crankshaft Seal Kit Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Rear Main Seal Kit Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 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.
(0 reviews)$34.02 Add to cart -
CumminsFront Crankshaft Seal Kit Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Front Oil Seal Kit Cummins Engine 6C.83 – 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 main function is to prevent engine oil from leaking around the crankshaft whilst it is rotating. The oil seal is normally made of an oil- and heat-resistant elastomer with a metal support ring.
Used on the 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL, QSL / QSL 9 engines.
Final compatibility must always be checked using the engine’s ESN and CPL, or the Cummins OEM catalogue. Within the QSL family, there may be variations depending on the year, configuration and CPL; therefore, the engine family alone does not guarantee 100% suitability.
(0 reviews)$15.42 Add to cart -
CumminsFront Crankshaft Seal Kit Cummins Engine 6C – Engine 6CT – Engine 6CTA
Front Crankshaft Seal & Sleeve Kit Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Front end of the crankshaft, pulley/damper side. Prevents engine oil from leaking around the front end of the crankshaft. Oil-resistant NBR nitrile rubber, metal reinforcement, and hardened steel wear sleeve. The kit includes an oil seal, wear sleeve, and dust shield.
Documented applications for Cummins 6C / 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL 8.9, and QSL 8.9 / QSL 9 engines.
We recommend always checking the ESN and CPL, because Cummins may use different front oil seal configurations depending on the series, model year, and engine configuration.
(0 reviews)$30.95 Add to cart -
CumminsOil Seal Kit Rear Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Oil Seal Kit Rear Cummins Engine 6C.83-Cummins Engine 6CT 8.3-Cummins Engine 6CTA 8.3
(0 reviews)$52.02 Add to cart -
CumminsRear Cover Gasket Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Rear Cover Gasket Cummins Engine 6C 8.3- Cummins Engine 6CT 8.3-Cummins Engine 6CTA 8.3
(0 reviews)$6.05 Add to cart -
CumminsRear Cam Bore Seal Cummins Engine 6C – Engine 6CT – Engine 6CTA
Camshaft Bore O-Ring Cummins Engine 6C – Engine 6CT – Engine 6CTA
It seals the rear opening of the camshaft housing, preventing engine oil leaks. An aftermarket catalog also refers to it as the camshaft plug O-ring.
For engines in the C, ISC, QSC, ISL, and QSL families; Cummins specifically lists ISC/ISL 8.9 L Tier 3 applications.
Before considering them 100% interchangeable, I still recommend verifying them using the ESN (Engine Serial Number), CPL, and QuickServe, because their application may vary depending on the engine configuration.
(0 reviews)$0.89 Add to cart -
CumminsSeal – Rocker Lever Cover Cummins Engine C 8.3 – Engine 6CT 8.3
Seal – Rocker Lever Cover Cummins Engine 6CT 8.3-Cummins Engine 6CT 8.3
(0 reviews)$10.83 Add to cart -
CumminsSealing Ring, Liner Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Sealing Ring, Liner Cummins Engine 6C.83-Cummins Engine 6CT 8.3-Cummins Engine 6CTA 8.3
(0 reviews)$4.99 Add to cart -
CumminsThermostat Gasket Cummins Engine 6C 8.3 – Engine 6CT 8.3 – Engine 6CTA 8.3
Thermostat Gasket Cummins Engine 6CT 8.3-Cummins Engine 6CT 8.3 -Cummins Engine 6CT 8.3
(0 reviews)$1.89 Add to cart -
GasketsTurbocharger Gasket Cummins Engine 6C 8.3 -Cummins Engine 6CT 8.3 -Cummins Engine 6CTA 8.3
Turbocharger Gasket Cummins Engine 6C 8.3 -Cummins Engine 6CT 8.3 -Cummins Engine 6CTA 8.3 Old Parts # 3918076
(0 reviews)$21.68 Add to cart