Overview — Liner Kit 3803703
3803703 is the liner kit used on CUMMINS engines to replace the cylinder liners at overhaul, restoring the original bore and sealing for the pistons and rings. We can supply all the original and replacement part numbers listed below, in stock or available on order — welcome to enquire by part number.
Parts Characteristics
The liner kit contains the cylinder liners built to the original material, bore and flange specification, with the sealing surfaces finished for the block. The liners accept the original pistons, rings and liner seals, and the bore is machined to the correct finish for ring seating. The kit includes the sealing components required for installation. As an OEM-spec kit, it restores the original cylinder geometry and oil control.
Applicable Models & Applications
This liner kit is used on CUMMINS engines at the specified overhaul bore, including the engine series that use this liner family. The family references 4376430, 4955328, 5405876 and 5472978 cover the same liner duty on adjacent builds. Typical applications include generator sets, industrial engines and construction equipment. Confirm the liner type, bore size and engine serial range against the liners removed from your engine before ordering.
Maintenance & Replacement
Replace the liners when the bore is worn beyond specification, the liner flange is damaged, or the sealing surfaces leak coolant. Wear shows as high oil consumption, blow-by and coolant contamination. When installing, clean the liner bores in the block, fit the new seals and liners following the original procedure, and check liner protrusion. Assemble the pistons and rings carefully and verify the ring gaps after installation.
Price Reference (USD)
The reference price for this Liner Kit (3803703) is approximately USD 120 – 500 per kit depending on cylinder count, grade, quantity and shipping destination. This is a planning estimate only — confirm current pricing and availability with our sales team before ordering.
Also in the LINER KIT Series
4376430, 4955328, 5405876, 5472978, G4376406.
Value & Service
Liner selection must match the block and piston exactly, so we verify 3803703 against the CUMMINS overhaul specification and confirm the bore size and engine serial range before dispatch. We stock the liner kit and the family numbers listed above and can supply the complete overhaul package including rings, bearings and gaskets in one tracked order. Our team will confirm the correct liner kit for your engine build.
Racer Machinery is a dedicated construction-machinery parts supplier — send us your part number and engine model, and we will confirm fitment, price and lead time for this liner kit and related CUMMINS overhaul components.
