MAHLE GS33504 CYLINDER HEAD BOLT SET FOR 01-10 GM DURAMAX

Product Description

Refresh clamping force on your 6.6L with the MAHLE GS33504 Cylinder Head Bolt Set for 2001–2010 GM Duramax (LB7/LLY/LBZ/LMM). These OE-style torque-to-yield fasteners deliver the correct stretch and sealing load for stock and tow-tune builds, and include washers for a clean, consistent install. One kit services a single cylinder head—order two for both banks.

Mahle GS33504 head bolts, 01-10 Duramax head bolt set, LB7 LLY LBZ LMM head bolts, GM 6.6L cylinder head bolts, torque-to-yield Duramax head bolts, OE replacement Mahle bolts

Fitment

• 2001–2004 LB7 6.6L Duramax — Silverado/Sierra 2500HD, 3500/3500HD
• 2004.5–2005 LLY 6.6L Duramax — Silverado/Sierra 2500HD, 3500
• 2006–2007 LBZ 6.6L Duramax — Silverado/Sierra 2500HD, 3500
• 2007.5–2010 LMM 6.6L Duramax — Silverado/Sierra 2500HD, 3500HD
• Kit services one head (18 bolts). Order two kits for both sides.

Cross-Reference / Alternatives (Mahle on CPP Diesel only)

• Mahle HS54580 Cylinder Head Gasket Set — LB7 (01–04): HS54580
• Mahle HS54580A Cylinder Head Gasket Set — LLY/LBZ (04.5–07): HS54580A
• Mahle HS54580B Engine Head Set — LMM (07.5–10): HS54580B
• Mahle 41909.03 Piston Ring Set (.030) — 01–10 Duramax: 41909.03
• Mahle 41909.02 Piston Ring Set (.020) — 01–10 Duramax: 41909.02

What’s Included

• (18) Torque-to-yield cylinder head bolts for one cylinder head
• (18) Washers

Why CPP Diesel

• Fast shipping, diesel-focused support
• Curated Mahle coverage for all Duramax generations

FAQ

Does this kit do both heads?
No—each GS33504 kit services one head (18 bolts). Order two kits for both banks.

Can I reuse old head bolts?
No. These are torque-to-yield fasteners and must be replaced once removed.

When should I choose studs instead?
If you’re running elevated boost, frequent teardowns, or competition use, consider upgrading to a high-quality stud kit.

Specifications for Mahle GS33504