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It is an internal nozzle in the lubrication system that sprays engine oil toward the bottom of the piston; it draws oil from the engine block’s lubrication gallery and directs a jet toward the underside of the piston. It is installed inside the cylinder block, in the lower part of the cylinders, facing the underside of the piston. This component is typically made of metallic materials suitable for the oil circuit and the engine’s internal temperatures.
Typically used on Cummins 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL 8.9 / 9, ISL Natural Gas, and QSL 8.9 / 9 engines.
Before placing an order, I always recommend checking the Cummins ESN (Engine Serial Number), CPL, and QuickServe catalog, because the same QSL/ISC/ISL model may use different nozzle variants depending on the year and configuration.
Conversion Gasket Set Cummins Engine V6-378
Lower Gasket Set Cummins Engine V8-504
Lower Gasket Set Cummins Engine V8-903
Cylinder Kit Complete – STD Cummins Engine V6-378 – Piston FP3277336
Cylinder Kit Complete – STD Cummins Engine V6-378-Piston FP200800; C.R. 17.0:1
Cylinder Kit Complete – STD Cummins Engine V8-504-Piston FP–3277336
Cylinder Kit Complete – STD Cummins Engine V8-504-Piston FP200800; C.R. 17.0:1
Cylinder Kit Complete – STD Cummins Engine V8-555- Piston FP–3275431
Cylinder Kit Complete – STD Cummins Engine V8-903 Piston FP–3037413; CR 15.5:1; Heavy Pin
Major Repair Kit Sea Raw Water Pump Cummins Engine V8-903
Cylinder Kit Complete – STD Cummins Engine V8-903 -Piston FP–3037413; CR 15.5:1; Light Pin
Sea Raw Water Pump Cummins Engine V8-903
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).
Cylinder Kit Complete Cummins Engine 6C Engine ISC Engine ISL
Engine Piston: M-3923164Â Liner Kit: M-3802407Â Piston Ring Set: M-3802429
Piston Pin: M-3934046Â Â Piston Pin Retainer: M-3920692
Cylinder Kit Complete Cummins Engine 6C Engine ISC Engine ISL9
Engine Piston: M-3926961Â Liner Kit: M-3802407 Â Piston Ring Set: M-3802429
Piston Pin: M-3934046Â Â Piston Pin Retainer: M-3920692
Cylinder Kit Complete Cummins Engine 6C Engine ISC Engine ISL9
Engine Piston: M-3917707Â Liner Kit: M-3802407Â Piston Ring Set: M-3802429
Piston Pin: M-3934046Â Â Piston Pin Retainer: M-3920692
The kit is installed inside the engine block. The cylinder liner fits into the block’s bore; inside the liner, the piston, piston pin, connecting rod, and crankshaft operate. It forms the thermal assembly of the individual cylinder and must contain combustion pressure, guide the piston, ensure compression sealing, control the oil film via the piston rings, and maintain the correct piston-to-liner clearance. The complete Cummins cylinder kit for engines in the C Series 8.3 L family, or industrial/on-highway/off-highway applications using the correct 8.3 L block configuration, with STD configuration, for the late thick-walled cylinder block #3934899, effective 01/05/1998.
It is used in Cummins 6C 8.3 L, 6CT 8.3 L, 6CTA 8.3 L, ISC 8.3, QSC 8.3, ISL 8.9/9, and QSL 8.9/9 engines.
Compatibility varies by engine CPL, ESN, piston configuration, and cylinder block. Verify the engine serial number before ordering. This wording allows you to correctly include QSL, ISL, QSC, and ISC without incorrectly stating that it fits all of these engines. Cummins itself recommends identifying parts by ESN/CPL and piston configuration.
Head Gasket Set Cummins Engine V6-378
Head Gasket Set Cummins Engine V8-504
Exhaust Manifold Gasket Cummins Engine V8-903
Head Gasket Set Cummins Engine V8-903
In-Frame Gasket Set Cummins Engine V8-903
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.
Liner w/o Sealing Ring Cummins Engine ISC 8.3-Cummins Engine QSC 8.3
The cylinder liner is installed inside the cylinder block, forming the cylindrical surface along which the piston moves. The kit is designed to provide the piston’s sliding surface, maintain the correct cylinder geometry, rebuild the cylinder during an engine overhaul, and ensure a proper seal using the included sealing elements. The kit includes a cylinder liner and a liner seal.
Installed on Cummins 6C/L Series, ISC 8.3/L, QSC 8.3/L, ISL 8.9/9, and QSL 8.9 engines.
Generally manufactured up to 1990 / before the 1991 block modifications. To avoid errors, I recommend verifying at least one of the following: Engine Serial Number (ESN), CPL, Cummins QuickServe catalog, block casting number, engine production year, original cylinder liner dimensions, and the number stamped on the old cylinder liner. In particular, it is important to distinguish the early pre-1991 block from later versions.
Main Bearing Set – STD Cummins Engine V6-378
Main Bearing Set – STD Cummins Engine V8-555
Piston Body w/o Pin – STD Cummins Engine V8-903
Connecting Rod Bushing Cummins Engine V8-903
Piston Body w/o Pin – STD Cummins Engine V6-378
Piston Body w/o Pin – STD Cummins Engine V6-378
Piston Body w/o Pin – STD Cummins Engine V8-504
Piston Body w/o Pin – STD Cummins Engine V8-504
Piston Body w/o Pin – STD Cummins Engine V8-555
Piston Body w/o Pin – STD Cummins Engine V8-903
Piston Cooling Nozzle Cummins Engine ISC -Cummins Engine QSC
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.
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.