MAHLE GS34005 ENGINE OIL COOLER GASKET SET FOR 01–16 GM DURAMAX

Product Description

Stop leaks at the source with the MAHLE GS34005 engine oil cooler gasket set for 2001–2016 GM 6.6L Duramax (LB7/LLY/LBZ/LMM/LML). OE-grade materials and precise cut profiles deliver a tight, reliable seal through heat cycles and towing abuse—so you can button up the cooler and get back on the road.

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Fitment

• 2001–2016 Chevrolet Silverado 2500/3500 HD – 6.6L Duramax (LB7/LLY/LBZ/LMM/LML)
• 2001–2016 GMC Sierra 2500/3500 HD – 6.6L Duramax (LB7/LLY/LBZ/LMM/LML)

Cross-Reference / Related Mahle Items (CPP Diesel)

• MAHLE CS54580 LOWER ENGINE GASKET SET (01–07)
• MAHLE OS32471 OIL PAN GASKET (11–16 LML)
• MAHLE OS32284 OIL PAN GASKET (01–10)
• MAHLE MS19398 EXHAUST MANIFOLD GASKET SET (01–16)
• MAHLE F31903 MANIFOLD-TO-UP-PIPE GASKET (01–16)
• MAHLE GS33752 WATER PUMP GASKET KIT (01–10)
• MAHLE C31900 THERMOSTAT HOUSING GASKET (01–16)

Install Notes

Thoroughly clean mating surfaces and inspect the oil cooler and adapter for warpage or pitting. Follow factory torque specs and sequence. Change engine oil and coolant as needed after service.

FAQ

Will GS34005 fit all 2001–2016 6.6L Duramax engines?

Yes—this set is specified for LB7, LLY, LBZ, LMM, and LML 6.6L Duramax applications.

Is this OE quality?

MAHLE Original gaskets meet or exceed OE requirements for materials, sealing, and durability.

What else should I replace during an oil cooler reseal?

Inspect the oil pan gasket, manifold/up-pipe gaskets, and thermostat housing gasket; replace as needed using the related MAHLE parts linked above.

Specifications for Mahle GS34005