MAHLE CS54580 LOWER ENGINE GASKET SET FOR 01-07 GM DURAMAX

Product Description

Seal the bottom end right the first time with the MAHLE CS54580 lower engine (conversion) gasket set for 2001–2007 GM 6.6L Duramax (LB7/LLY/LBZ). OE-grade materials, precise fitment, and the essentials you need for leak-free reseals after oil pan, timing cover, rear main, and water pump service—backed by CPP Diesel’s expert support.

Mahle CS54580 lower engine gasket set, Duramax LB7 LLY LBZ conversion set, 6.6L GM bottom end reseal kit, Mahle lower gasket kit 2001 2002 2003 2004 2005 2006 2007, oil pan gasket RTV style, rear main seal included, CPP Diesel Mahle gasket set CS54580, Duramax rebuild gaskets, timing cover seal, water pump gasket

Fitment

• 2001–2007 Chevrolet Silverado 2500HD/3500HD – 6.6L Duramax LB7/LLY/LBZ
• 2001–2007 GMC Sierra 2500HD/3500HD – 6.6L Duramax LB7/LLY/LBZ
• Also used in select 2003–2007 Chevy C4500/C5500 Kodiak and 2006–2007 Chevy/GMC Express vans (6.6L Duramax)

Cross-Reference / Related MAHLE Items (CPP Diesel)

• MAHLE HS54580 (2001–2004 LB7) Head Set
• MAHLE HS54580A (2004.5–2007 LLY/LBZ) Head Set
• MAHLE 95-3726VR (2001–2004) Engine Gasket Kit (no head gaskets)
• MAHLE 95-3727 (2004.5–2007) Engine Gasket Kit (no head gaskets)
• MAHLE CS54580A (2007.5–2010 LMM) Lower Engine Gasket Set
• MAHLE GS34005 Oil Cooler Gasket Set (2001–2016)

Notes

Designed as a lower engine/conversion set. Cylinder head gaskets/bolts are not included. Always verify bore, surface prep, and torque/angle specs per service manual.

FAQ

Will this fit my 2001–2007 Duramax?
Yes—CS54580 fits LB7, LLY, and LBZ 6.6L Duramax engines (2001–2007).

Does this kit include the rear main seal?
Yes—rear main seal and timing cover gaskets/seal are included, along with a water pump gasket.

Is the oil pan gasket a separate piece?
This application uses RTV-style sealing for the pan side-rails per MAHLE spec.

Do I need a head set too?
For a full top + bottom reseal, pair this lower set with the correct MAHLE head set (HS54580 for LB7 or HS54580A for LLY/LBZ).

Specifications for Mahle CS54580