Product Description
MAHLE GS33504 is an OE-quality cylinder head bolt set for the 2001–2010 GM 6.6L Duramax (LB7/LLY/LBZ/LMM). Built to meet or exceed factory specs, this kit services one cylinder head (18 bolts)—order quantity 2 to complete both banks. Washers included. Torque-to-yield (TTY) fasteners should not be reused.
- Application: 6.6L Duramax LB7/LLY/LBZ/LMM (2001–2010)
- Count: 18 bolts (one side)
- Head style: Hex • Washers: Included
- Meets or exceeds OE specifications
- GTIN/UPC: 027067724533
Fitment
- 2001–2004 LB7 6.6L Duramax – Chevy Silverado/GMC Sierra 2500HD, 3500/3500HD
- 2004.5–2005 LLY 6.6L Duramax – Chevy Silverado/GMC Sierra 2500HD, 3500
- 2006–2007 LBZ 6.6L Duramax – Chevy Silverado/GMC Sierra 2500HD, 3500
- 2007.5–2010 LMM 6.6L Duramax – Chevy Silverado/GMC Sierra 2500HD, 3500HD
- Kit fits one cylinder head; order two kits for complete engine service.
Cross Reference & Related Numbers
- MAHLE/VR: GS33504 (Victor Reinz equivalent)
- GM OE individual bolt: 11610681 (single replacement bolt)
- GM Related (upper head bolt references): 97310851, 97355741
- MPN: GS33504 • GTIN/UPC: 027067724533
What’s Included
18 torque-to-yield cylinder head bolts for one cylinder head, plus washers.
FAQ
Does this kit do both heads?
No. It services one cylinder head (18 bolts). Order two kits for both sides.
Are these bolts reusable?
No. These are torque-to-yield fasteners and should be replaced once removed.
When should I upgrade to head studs?
For high boost/power builds or repeated disassembly, consider a quality head stud kit instead of bolts.
