Cylinder head; can be used as a seat for the intake or exhaust valve, depending on the cylinder head configuration.
Compatible engines: Cummins L10 / LTA10. Some aftermarket catalogs also list the M11, but Cummins officially specifies part number 3418040 primarily for non-certified 10-liter L10 engines. Always verify using the Engine Serial Number (ESN).
Installed in the cylinder head; it keeps the valve stem aligned during opening and closing. This applies especially to non-certified 10-liter versions.
It is also sold for M11 and ISM applications, but for these motors, it is recommended to check the ESN serial number.
Some catalogs list it for intake valves; other aftermarket catalogs describe it as suitable for both intake and exhaust. The correct installation position must therefore be confirmed via CPL/ESN.
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).