Product Description
Seal your LB7 top end the right way. The INDUSTRIAL INJECTION HS54580 head gasket set (upper head set) delivers OE-style sealing for 2001-2004 6.6L Duramax LB7 service. It includes the critical upper-engine gaskets and seals needed when pulling cylinder heads.
Fitment
- 2001-2004 Chevy/GMC 2500HD/3500HD - 6.6L Duramax LB7
What's Included
- Complete upper head set (intake/exhaust manifold, valve cover, injector & miscellaneous upper-engine seals as supplied by HS54580)
Important Notes
- Head gaskets are not included in this set (order left/right MLS head gaskets separately).
- Head bolts/studs are not included (order new TTY bolts or upgrade to studs).
- Select head gasket grade (A/B/C) based on measured piston protrusion and deck specs.
Recommended Parts (CPP internal links)
- MAHLE 54585 LEFT HEAD GASKET - Grade C (1.05 mm)
- MAHLE 54582 RIGHT HEAD GASKET - Grade C (1.05 mm)
- ARP 230-4201 HEAD STUD KIT - 01-16 Duramax
- MAHLE GS33504 HEAD BOLT SET - 01-10 Duramax (one head)
- Shop All DURAMAX GASKETS & SEALS
FAQ
Does this kit include the head gaskets?No. HS54580 is the head set (upper set). Order left and right MLS head gaskets separately by grade.
How do I choose the correct head gasket grade?Measure piston protrusion and follow OE service data. Grade C (≈1.05 mm) is common, but always verify your build.
Should I reuse stock head bolts?No. LB7 uses torque-to-yield bolts; replace with new bolts or upgrade to ARP studs for clamping strength.
What else should I replace while I'm in there?Inspect injector seals/return washers, up-pipe and manifold gaskets, and coolant pipe O-rings; refresh as needed.
Wake up your 6.7L Cummins with Industrial Injection's S471 (.90 A/R) 2nd-Gen T4 swap kit. This complete system replaces the restrictive factory VGT with a robust S400-frame charger for lower EGTs, simpler plumbing, and reliable power for street/tow or weekend competition.
Fitment
- 2013-2018 Ram 2500/3500 with 6.7L Cummins (auto & manual)
What's Included
- S471 turbocharger (71mm compressor / 83-74mm turbine) with .90 A/R T4 housing
- 2nd-Gen style T4 exhaust manifold (or manifold adapter, per kit contents)
- Downpipe & install hardware
- Charge/IC piping, boots, and clamps
- Oil feed & drain lines, gaskets, and necessary fittings
Why It Works
- Lower EGTs & better reliability than the stock VGT under heavy load
- Simplified layout for easier serviceability
- Proven S400-frame airflow for strong mid/top-end power
Recommended Parts (CPP internal links)
- ARP 247-4202 Head Stud Kit (5.9/6.7 Cummins)
- 2013-2018 Intercoolers & Boost Tubes
- 6.7L Cummins Downpipes & Exhaust Components
Install & Notes
- Custom calibration recommended for optimal fueling/shift strategy
- Injector upgrades may improve spool and overall performance
- Competition-use only where applicable; check local emissions laws
FAQ
How does the .90 A/R drive on the street?The .90 A/R turbine housing offers quick response for towing and daily use while still supporting strong top-end power.
Is this a full 2nd-Gen swap?Yes-this kit relocates to a fixed-geometry S400 on a T4 footprint with manifold/adapter, lines, piping, and hardware for a clean install.
Do I need head studs?They're recommended as you increase boost. See ARP 247-4202 above.
| Specification | Value |
|---|---|
| Manufacturer / Part | MAHLE HS54580 (Upper Head Set) - LB7 6.6L Duramax (2001-2004) |
| UPC | 027067724175 |
| GTIN (14) | 00027067724175 |
| Prop 65 (California) | Yes - Short-form warning required for CA customers |
| Prop 65 Warning Text | ⚠️ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
