Product Description
MAHLE HS54580B upper engine (head) gasket set delivers OE-level sealing for 2007.5–2010 6.6L Duramax LMM. Built with multi-layer-steel (MLS) exhaust gaskets and Victo-Tech intake seals, this kit includes the critical upper-end gaskets and O-rings for clean, durable cylinder-head service on Silverado/Sierra 2500HD/3500HD and select Express/Savana vans. Head gaskets and head bolts are sold separately so you can choose the exact thickness/fasteners for your build.
Fitment
- 2007.5–2010 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax LMM
- 2007.5–2010 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LMM
- 2007–2010 Chevrolet Express 2500/3500, 2010 Express 4500 – 6.6L Duramax
- Kit type: Upper engine/head set (no cylinder head gaskets included).
What’s Included
- Upper-engine service gaskets & seals for both banks: intake & exhaust manifold, valve cover gaskets/grommets, injector O-rings, EGR & turbo line seals, thermostat housing and related seals.
- Head gaskets and head bolts/studs are NOT included.
Cross-Reference / Alternatives (Mahle-only links)
- Head set for earlier models: MAHLE HS54580 – 2001–2004 LB7
- Head set for mid-gen: MAHLE HS54580A – 2004.5–2007 LLY/LBZ
- Head set for later models: MAHLE HS54580C – 2011–2016 LML
- Valve cover gasket set: MAHLE VS50439 – 2004.5–2010 LLY/LBZ/LMM
- Head bolts (one head): MAHLE GS33504 – 2001–2010 LB7/LLY/LBZ/LMM
- Lower (conversion) set: MAHLE CS54580A – 2007.5–2010 LMM
Why MAHLE
- OE geometry and materials for repeatable clamp load and heat-cycle stability
- Application-correct content for faster, cleaner installs
- Trusted by fleet rebuilders and diesel specialists
Installation Notes
- Inspect head/block flatness and surface finish per GM spec
- Select the correct MLS head gasket thickness by piston protrusion
- Use new TTY bolts or studs; follow the factory torque sequence
FAQ
Does HS54580B include the two cylinder head gaskets?
No. This is the upper engine/head set. Order left/right MLS head gaskets separately in the required thickness.
Are head bolts included?
No. Add new TTY bolts (e.g., MAHLE GS33504) or your preferred head studs.
Will this fit my 2009 LMM?
Yes—HS54580B covers 2007.5–2010 6.6L Duramax LMM trucks and select vans.
Specifications for Mahle HS54580B
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | HS54580B |
| UPC | 027067846761 |
| GTIN | 00027067846761 |
| Shipping Info | Free Shipping from CPP Diesel; typical package dims approx. 10.00" W × 2.00" H × 24.00" L. |
| Country of Origin | Not specified |
| Prop 65 | This product can expose you to chemicals including lead and lead compounds. For more information, visit www.P65Warnings.ca.gov. |
