Description
Injector Cup O-rings, 2 Pack, LB7 Duramax | 2001-2004 — 10306
These injector cup O-rings replace GM 94051259 on the 6.6L Duramax LB7. On the LB7, each injector sits in a cup that passes through the coolant jacket in the cylinder head, and the O-rings seal coolant away from the injector bore. Damaged or hardened cup O-rings allow cross-contamination, letting coolant into the engine oil. This 2 pack services one injector cup.
Coolant in the oil can destroy bearings quickly, and a leaking injector cup is one of the LB7's known causes. Replace the cup O-rings any time an injector cup is removed, or when diagnosing coolant loss with no external leak. Replace if worn or damaged. Commonly replaced at the same time: Injector Cup Sealant, Duramax | 2001 - 2004 .
Product details
- Replaces GM 94051259
- 2 O-rings, enough for one injector cup
- 16 required per engine (2 per cup)
- LB7 only
- (2) LB7 injector cup O-rings
Fitment / application
Merchant Automotive Injector Cup O-rings 2001 - 2004 10306
Confirm year, engine, transmission or axle configuration before ordering.
Manufacturer product reference: Specifications and fitment.
