Product Description
Stop rear main leaks the right way with the MAHLE 67777 Rear Main Crankshaft Seal for the 2001–2016 6.6L Duramax (LB7/LLY/LBZ/LMM/LML). Built to OE specs with heat-resistant fluoroelastomer, this one-piece seal restores factory sealing and protects against premature wear on hard-working HD trucks.
Fitment
- 2001–2016 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD — 6.6L Duramax (LB7, LLY, LBZ, LMM, LML)
Cross-Reference / Alternatives (Mahle on cppdiesel.com only)
- Mahle 67775 Front/Timing Cover Crank Seal (01–16 Duramax): MAHLE 67775
- Mahle K31904 Water Pump Seal (01–16 Duramax): MAHLE K31904
- Mahle OS32284 Oil Pan Gasket (01–10 Duramax): MAHLE OS32284
- Mahle B45974 Valve Stem Seal (01–10 Duramax): MAHLE B45974
What’s Included
- Rear main crankshaft seal (one-piece, seal only)
Why Buy From CPP Diesel
- OE-grade Mahle coverage for Duramax platforms
- Fast shipping and diesel-focused support
FAQ
Will this fit all 2001–2016 Duramax engines?
Yes—LB7, LLY, LBZ, LMM, and LML 6.6L engines.
Is this a one-piece seal and what’s it made of?
Yes—one-piece design using heat-resistant fluoroelastomer.
Does it include the rear cover or gasket?
No. This listing is the seal only. Inspect/replace rear cover and related gaskets as needed.
What’s the OE cross reference?
GM 97209342.
Specifications for Mahle 67777
| Attribute | Value |
|---|---|
| Brand | Mahle |
| Part Number | 67777 |
| UPC | 027067721525 |
| GTIN | 027067721525 |
| OE Cross-Ref | GM 97209342 |
| Engine Compatibility | 2001–2016 6.6L Duramax (LB7/LLY/LBZ/LMM/LML) |
| Seal Style / Material | One-piece / Fluoroelastomer |
| Package Dimensions | W 7.00" × H 6.00" × D 9.00" |
| Shipping | Calculated at checkout |
| Prop 65 | Not specified by manufacturer. See www.P65Warnings.ca.gov. |
