Product Description
Seal your 6.6L the right way with the MAHLE 54580 Right (Passenger) Head Gasket — Grade A 0.95mm for 2001–2016 GM Duramax. This MLS (multi-layer steel) gasket matches OE thickness for stock piston protrusion and delivers dependable clamp-load retention on LB7, LLY, LBZ, LMM, and LML engines. Standard bore; head bolts/studs not included.
Fitment
- 2001–2016 Chevrolet Silverado/GMC Sierra 2500HD & 3500HD — 6.6L Duramax (LB7, LLY, LBZ, LMM, LML) — Right/Passenger side
Cross-Reference / Alternatives (Mahle only)
- Right — Grade B 1.00mm: MAHLE 54581
- Right — Grade C 1.05mm: MAHLE 54582
- Left — Grade A 0.95mm: MAHLE 54583
- Upper Head Set (11–16 LML): MAHLE HS54580C
- Upper Head Set (04.5–07 LLY/LBZ): MAHLE HS54580A
- Lower Engine Gasket Set (01–07 LB7/LLY/LBZ): MAHLE CS54580
- Lower Engine Gasket Set (07.5–10 LMM): MAHLE CS54580A
What’s Included
- (1) Right-side MLS head gasket, 0.95mm (Grade A)
FAQ
Will this fit my truck?
Yes—fits 2001–2016 6.6L Duramax LB7/LLY/LBZ/LMM/LML on the right/passenger side.
Is this MLS and standard bore?
Yes—multi-layer steel, stock 0.95mm thickness for standard-bore builds.
Do I need new bolts or studs?
Yes—Duramax uses torque-to-yield head bolts. Replace them or upgrade to studs during reassembly.
Which thickness should I choose?
Grade A (0.95mm) is stock. Machined heads/blocks may require Grade B (1.00mm) or Grade C (1.05mm); verify piston protrusion.
Specifications for Mahle 54580
| Attribute | Value |
|---|---|
| Brand | Mahle |
| Part Number | 54580 (Right, Grade A 0.95mm) |
| Material | Multi-Layer Steel (MLS) |
| Engine Compatibility | 2001–2016 GM 6.6L Duramax — LB7, LLY, LBZ, LMM, LML |
| Side / Position | Right (Passenger) |
| Thickness / Grade | 0.95mm — Grade A (stock) |
| UPC | 27067719836 |
| GTIN | 27067719836 |
| Package Dimensions | 6.00" × 6.00" × 6.00" (per listing) |
| Shipping | Calculated at Checkout |
| Country of Origin | Not specified |
| Prop 65 | See www.P65Warnings.ca.gov |
