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High Efficiency Fuel Spin-on Cummins Engine QSL
| ThreadO | O.D | Length | f. Gskt |
| 7/8/2014 | 3 23/32 (94.5) | 7 5/32 (181.8) | [1] Included |
High Velocity Dual-Flow Lube Spin-on Cummins Engine QSL
| ThreadO | O.D | Length | I. Gskt |
| 2 1/4-12 | 4 21/32 (118.3) | 11 13/32 (289.7) | [1] Included |
In-Frame Overhaul Kit Cummins Engine QSL9 Articulated Piston
Included :
| Engine Kit Part No. | Description | Qty | Part Comment |
| FP-LK13938095 | Cylinder Kit Complete – STD | 6 | Piston Kit FP–4089963 & Liner Kit FP–3800328 |
| FP-3945917 | Main Bearing Set – STD | 1 | |
| FP-5338314 | Connecting Rod Bearing Set – STD | 1 | |
| FP-4089978 | Head Gasket Set | 1 | QSL CM850 |
| FP-5332563 | Oil Pan Gasket | 1 | |
| FP-3914302 | Oil Suction Tube Gasket | 1 |
This quality aftermarket replacement part is guaranteed to meet OEM specifications, covered by 12-month warranty
Overhaul kits & In-Frame Kits are serial number specific. Please provide this information when ordering to ensure accuracy.
In-Frame Overhaul Kit Cummins EngineQSL9 Articulated Piston, CM850
Included :
| Engine Kit Part No. | Description | Qty | Part Comment |
| FP-LK13938095 | Cylinder Kit Complete – STD | 6 | Piston Kit FP–4089963 & Liner Kit FP–3800328 |
| FP-3945917 | Main Bearing Set – STD | 1 | |
| FP-5338314 | Connecting Rod Bearing Set – STD | 1 | |
| FP-4089758 | Head Gasket Set | 1 | |
| FP-3938160 | Oil Pan Gasket | 1 | |
| FP-3914302 | Oil Suction Tube Gasket | 1 |
This quality aftermarket replacement part is guaranteed to meet OEM specifications, covered by 12-month warranty
Overhaul kits & In-Frame Kits are serial number specific. Please provide this information when ordering to ensure accuracy.
An insert in the intake valve seat installed in the cylinder head. Its function is to seal the combustion chamber when the intake valve is closed, transfer heat from the valve to the cylinder head, and provide wear resistance in the area of the cylinder head subjected to continuous opening and closing cycles.
Used on various Cummins ISC 8.3, QSC 8.3, ISL 8.9, QSL 8.9, and ISLe/ISLG 8.9 configurations.
I always recommend verifying the part using the ESN (Engine Serial Number) and CPL, because Cummins uses different part numbers depending on the cylinder head configuration and the control module.
It is a metal insert installed in the cylinder head, where it serves as the valve’s seating and sealing surface. It is pressed or machined into the cylinder head around the exhaust valve seat. It provides the valve with a durable surface against which to close; it contributes to the combustion chamber seal and to the transfer of heat from the valve to the cylinder head.
It uses Cummins ISC 8.3, QSC 8.3, ISL 8.9, ISL 8.9 L, ISLe, 6LT 8.9L, QSL 8.9, QSL 8.9 L, and QSL 9 engines
Before the sale, it is recommended that you verify the ESN (Engine Serial Number) and CPL, especially since the part number has been superseded.
It ensures the combustion chamber remains airtight and allows for the controlled flow of high-pressure, high-temperature exhaust gases toward the manifold and the turbocharger. The kit includes an exhaust valve and retaining cones.
Used on Cummins Heavy Duty and Medium Duty engines (industrial, marine, automotive, and construction applications) in the ISC (8.3L), ISL / ISL9 / ISLE4 (8.9L), QSC8.3, QSL9, 6C8.3, B4.5, and ISF3.8 engine series. Models from approximately 2002 to the present.
Always verify using the Engine Serial Number (ESN).
The valve is installed in the cylinder head, on the intake side of the combustion chamber. Its function is to open the intake port during the correct phase of the engine cycle, allowing air to enter the cylinder, and to close, creating the necessary seal during compression and combustion. It is made of Superalloy, a high-heat-resistance alloy suitable for use in engine valves.
Applications: ISC 8.3, QSC 8.3, ISL 8.9, QSL 8.9 / QSL9
There are also aftermarket catalogs that list the C Series, L10, and M11, but these applications should be verified using the ESN/CPL, because the most specific documentation available focuses the 4089761 primarily on the ISC/QSC/ISL/QSL families.
The cylinder liner forms the cylindrical surface along which the piston and piston rings slide. It maintains the correct geometry of the cylinder, transfers heat to the engine block, and allows the engine to be rebuilt without having to replace the entire engine block. It is specified as a flanged cylinder liner and is supplied without sealing rings.
Cummins 6C-Series engines are also used in power plants, including the ISC 8.3, QSC 8.3, ISL 8.9 / 9, and QSL 8.9 / 9 models.
ESN – Engine Serial Number, CPL, Cummins QuickServe/OEM catalog, complete engine model and CM, stamped/cast number on the old liner, dimensional comparison of inner diameter/flange/length, or confirmation from Cummins.
Oil Cooler Core Inner Gasket Engine ISL-Cummins Engine QSL
The same ISC/ISL family can use different bowls depending on the application—road, industrial, or marine—or the position of the filter housing.
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.
Oil Pan Gasket Cummins Engine ISL – Engine QSL9
Cummins notes that some ISL kits include two different oil pan gaskets due to varying configurations.
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.
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.
Oil Pan Gasket Engine ISL-Cummins Engine QSL
Oil Pump Cummins Engine ISL 8.9L – Engine QSL 8.9L
To be 100% certain, check the engine serial number (ESN),
the return line and turbocharger may vary depending on the CPL,
year, and turbo configuration.
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.
Oil Seal Kit Rear-Cummins Engine ISL-Cummins Engine QSL
It connects the piston to the connecting rod. It allows the piston and connecting rod to move relative to each other and transfers the combustion force to the connecting rod.
Confirmed applications: Cummins ISC, QSC, ISL, QSL; it is also documented for engines in the 6L/6LT family.
To ensure exact compatibility, I still recommend checking via ESN/CPL, because not all configurations use the same connector.
It is described as a two-piece articulated piston, constructed with a forged steel crown and a cast aluminum skirt. It is installed inside the cylinder bore and connected to the connecting rod via the piston pin. The kit converts the pressure generated by combustion into reciprocating motion transmitted to the connecting rod and then to the crankshaft. The piston rings simultaneously ensure compression sealing, oil film control, and heat transfer from the piston to the cylinder bore. The kit consists of Engine Piston 1, Piston Ring Set 1, Top Keystone Piston Ring, Intermediate Piston Ring, Oil Control Piston Ring, and Piston Pin Retainers 2.
Equipped with Cummins ISL 850, ISL 8.9, ISL 8.9L, QSL 8.9, and QSL 8.9L engines.
To avoid installation errors, always verify at least one of the following: Engine Serial Number (ESN), CPL, Cummins QuickServe/OEM catalog, original piston number, crown number, CAPS injection system, or the piston’s physical dimensions.
Piston Cooling Nozzle Cummins Engine L10- Cummins Engine ISL-Cummins Engine QSL
This is a standard (STD) engine piston kit used primarily on Cummins ISL/QSL 8.9–9.0 L engines, featuring a two-piece piston. The kit is installed inside the cylinder block, connected to the connecting rod via the piston pin. Its function is to absorb the pressure generated by combustion, transfer the force to the connecting rod and then to the crankshaft, seal the combustion chamber via the piston rings, control oil consumption, and transfer part of the heat from the piston to the cylinder liner and the cooling/lubrication system.
It is always a good idea to check the ESN (Engine Serial Number), CPL, the Cummins QuickServe/OEM catalog, engine model, horsepower/rating, piston type (1-piece vs. 2-piece), the number stamped on the cylinder head, and the dimensional comparison.
Re-Ring Kit Cummins Engine ISL8.9 – Cummins Engine QSL 9
Included :
| Engine Kit Part No. | Description | Qty | Part Comment |
| FP-3800328 | Liner w/Sealing Rings | 6 | |
| FP-4089644 | Ring Set, Single Cylinder – STD | 6 | |
| FP-3945917 | Main Bearing Set – STD | 1 | |
| FP-5338314 | Connecting Rod Bearing Set – STD | 1 | |
| FP-4089758 | Head Gasket Set | 1 | |
| FP-3938160 | Oil Pan Gasket | 1 | |
| FP-3938160 | Oil Pan Gasket | 1 |
This quality aftermarket replacement part is guaranteed to meet OEM specifications, covered by 12-month warranty
Overhaul kits & In-Frame Kits are serial number specific. Please provide this information when ordering to ensure accuracy.
Re-Ring Kit Cummins Engine ISL8.9 Articulated Piston w/o Crown- Cummins Engine QSL 9 w/o Crown
Included :
| Engine Kit Part No. | Description | Qty | Part Comment |
| FP-CCKISLAR | Crownless Cylinder Kit – STD | 6 | Contains skirt, rings and liner |
| FP-3945917 | Main Bearing Set – STD | 1 | |
| FP-5338314 | Connecting Rod Bearing Set – STD | 1 | |
| FP-4089758 | Head Gasket Set | 1 | |
| FP-3938160 | Oil Pan Gasket | 1 |
Overhaul kits & In-Frame Kits are serial number specific. Please provide this information when ordering to ensure accuracy.
This quality aftermarket replacement part is guaranteed to meet OEM specifications, covered by 12-month warranty
.Re-Ring Kit Cummins Engine QSL9 w/o Pistons
Included :
| Engine Kit Part No. | Description | Qty | Part Comment |
| FP-3800328 | Liner w/Sealing Rings | 6 | |
| FP-4089644 | Ring Set, Single Cylinder – STD | 6 | |
| FP-3945917 | Main Bearing Set – STD | 1 | |
| FP-5338314 | Connecting Rod Bearing Set – STD | 1 | |
| FP-4089978 | Head Gasket Set | 1 | QSL CM850 |
| FP-5332563 | Oil Pan Gasket | 1 |
Overhaul kits & In-Frame Kits are serial number specific. Please provide this information when ordering to ensure accuracy.
This quality aftermarket replacement part is guaranteed to meet OEM specifications, covered by 12-month warranty
Rear Cover Gasket Engine ISL-Cummins Engine QSL
Identifies a piston pin retaining ring. It is a small but essential component of the piston-connecting rod assembly and is typically installed in pairs per piston, one on each side of the pin. Its function is to axially secure the piston pin within the piston seats. Spring-steel retaining ring.
It has a wide range of applications in the Cummins C / ISC / QSC / ISL / QSL / L family.
Check the Engine Serial Number (ESN) and CPL.
Used on Cummins engines in the ISL/QSL family and in 8.3–9 L applications. Located in the piston. Its function is to seal against combustion pressure, control lubricating oil, and transfer heat from the piston to the cylinder wall. Made of special steel/cast iron for piston rings.
Engines: Cummins ISL9, ISL/ISLe, QSL/QSL9; 6C8.3/GTA8.3 in some applications.
When purchasing a replacement engine, I recommend checking the ESN and CPL, because Cummins may use different piston/piston ring configurations within the same ISL/QSL family.
This is a set of piston rings. They perform three essential functions: they seal the combustion pressure between the piston and the cylinder, control the oil film on the cylinder wall, and help transfer heat from the piston to the cylinder.
Used on Cummins C Series, ISC 8.3, QSC 8.3, ISL, and QSL/QSL9 engines.
For QSL/ISL/ISC/QSC, it’s always a good idea to check the ESN and CPL, because the same engine may use different pistons and ring configurations depending on the version and model year.
The bushing is pressed into the connecting rod foot and forms the sliding surface between the connecting rod and the piston pin. It serves to maintain proper piston alignment, reduce friction and wear, and distribute the loads transmitted from the piston pin to the connecting rod. Some aftermarket versions require boring or finishing after installation to achieve the correct pin tolerance.
It is used in various Cummins applications in the C, ISC, ISL, QSC, and QSL families.
Final compatibility must be verified using the ESN (Engine Serial Number), CPL, and the QuickServe/Cummins parts catalog, because not all configurations of the same engine necessarily use the same connecting rod or bushing.
transfers combustion force from the piston to the crankshaft, converting piston reciprocating motion into crankshaft rotation.
For Cummins 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, and ISL 8.9 / 9 engines. Some aftermarket catalogs also extend the application to QSC 8.3 and QSL 9 Marine / Industrial engines.
Always verify compatibility using the Engine Serial Number (ESN), CPL, and the original connecting rod number before installation.
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 0.010″.
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.
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.
Secures the connecting rod cap to the connecting rod, ensuring proper tightening around the crankshaft journal. M12 × 1.25 thread. High-strength steel. Grade: 12.9.
Used on 6C / 6CT 8.3, 6CTA 8.3, ISC 8.3, and QSC 8.3 motors, as well as certain ISL, QSL, and M11 applications.
To ensure full compatibility, I recommend checking the ESN (Engine Serial Number), CPL, and connecting rod number, because there may be different configurations within the ISC/ISL/QSC/QSL/M11 family.
It is a connecting rod bolt nut used to secure the connecting rod cap to the connecting rod body. It holds the connecting rod bolt—and thus the connecting rod cap—tightly in place on the crankshaft; it is a critical component of the connecting rod assembly.
Used on 6C / 6CT 8.3, 6CTA 8.3, ISC 8.3, and QSC 8.3 motors, as well as certain ISL, QSL, and M11 applications.
However, this must be verified using the ESN (Engine Serial Number), CPL, and the QuickServe catalog before placing the order.
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 0.030″.
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.
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 0.040″.
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.
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.
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 0.010″.
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.