Product Description
MAHLE 67777 is an OE-quality rear main crankshaft seal for 2001–2016 GM 6.6L Duramax engines (LB7/LLY/LBZ/LMM/LML). Built from premium materials for a factory-fit and long service life. One-piece, fluoroelastomer seal.
- Application: 6.6L Duramax (LB7, LLY, LBZ, LMM, LML)
- Cross-Ref (GM): 97209342
- GTIN/UPC: 027067721525
- Seal Style: 1-piece
- Material: Fluoroelastomer
- Warranty: 12 months
Fitment
- 2001–2016 Chevrolet/GMC 2500HD & 3500HD with 6.6L Duramax (LB7/LLY/LBZ/LMM/LML)
Why MAHLE 67777
- OE-grade sealing for leak prevention
- Precise crank snout engagement
- Durable high-temp fluoroelastomer construction
Install Notes
- Inspect crank surface; clean and lightly oil seal lip
- Use a proper alignment/driver tool; press squarely to depth
- Verify rear cover and crankcase ventilation condition
FAQ
Will this fit my 2001–2016 Duramax?
Yes. It fits LB7, LLY, LBZ, LMM, and LML 6.6L engines.
Is a housing or gasket included?
No—this is the seal only. Reuse/replace rear cover and related gaskets as needed.
What’s the material and style?
One-piece, fluoroelastomer rear main seal for durability and oil resistance.
What GM number does it cross?
GM 97209342.
Warranty?
12-month manufacturer warranty.
