MAHLE CS54580A LOWER ENGINE GASKET SET FOR 2007.5-2010 GM 6.6L DURAMAX ENGINE

The CS54580A is MAHLE’s OE-grade lower-engine (conversion) gasket kit, designed to seal the lower portion of the engine block on GM’s 6.6 L Duramax engines (LMM platform). It's essentially the second-generation version of the original CS54580 kit, tailored specifically for the 2007.5–2010 LMM Duramax engines

Vehicle Fitment

✔ 2007.5–2010 Chevrolet/GMC Silverado & Sierra 2500HD/3500HD
✔ Duramax LMM 6.6 L V8 engines

It does not cover Duramax LB7, LLY, or LBZ engines—those use the earlier CS54580 kit

Kit Contents

Includes essential gaskets and seals for:

• Oil pan gasket(s)

• Rear main seal

• Timing cover gaskets/seal

• Water pump seal

It targets the lower engine section, so cylinder heads and bolts are not included

 Why It Matters

Designed to deliver OEM-level performance, this kit ensures reliable sealing of vital components in the lower engine. Direct-fit, high-quality parts help prevent leaks, protect oil integrity, and support long-term engine reliability during bottom-end rebuilds.