Product Description
Harden your bottom end with the MAHLE CB-1990P P-Series standard connecting rod bearing for 2001–2016 GM 6.6L Duramax (LB7/LLY/LBZ/LMM/LML). Tri-metal TM-77 overlay on a hardened steel back delivers high crush retention, stable oil film, and resistance to overlay fatigue under heavy tow, tune, and work-truck duty. Sold individually (order 8 for a V8); use with connecting rods stamped “A”.
Fitment
- 2001–2016 Chevrolet Silverado 2500/3500 HD – 6.6L Duramax (LB7, LLY, LBZ, LMM, LML)
- 2001–2016 GMC Sierra 2500/3500 HD – 6.6L Duramax (LB7, LLY, LBZ, LMM, LML)
- 2001–2016 Chevrolet Express / GMC Savana 2500–3500 – 6.6L Duramax
Cross-Reference / Alternatives (Mahle on CPP Diesel only)
- MAHLE CB-1990P-.25MM (.25mm undersize)
- MAHLE CB-1990P-.50MM (.50mm undersize)
- MAHLE CB-1805P (STD) “B-rod” companion shell
Notes
Measure journals/bores and confirm rod marking (“A” vs. “B”). Follow OE specs for clearance and torque. Standard size (STD); use undersize options if the crank is ground/polished.
FAQ
Will this fit all 2001–2016 Duramax engines?
Yes—LB7, LLY, LBZ, LMM, and LML. Verify you have “A” stamped connecting rods for CB-1990P.
How many do I need?
Sold individually. A V8 requires eight rod bearing positions (order 8).
What material/series is this?
P-Series tri-metal (TM-77 overlay) on a hardened steel back with high crush and proper eccentricity for oil control.
Specifications for Mahle CB-1990P
| Attribute | Value |
|---|---|
| Brand | MAHLE / Clevite |
| Part Number | CB-1990P (Standard) |
| Series / Material | P-Series / TM-77 tri-metal on hardened steel back |
| Engine Compatibility | 2001–2016 GM 6.6L Duramax (LB7/LLY/LBZ/LMM/LML) |
| UPC | 27067970978 |
| GTIN | 027067970978 |
| Shipping | Calculated at Checkout; optional shipping insurance available |
| Prop 65 | This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Learn more |
