Product Description
MAHLE 41909.02 piston ring set (.020 over) for the 2001–2004 GM 6.6L Duramax LB7 (VIN “1”). Complete 8-cylinder kit with ductile-iron, plasma-moly top rings engineered for fast seat-in and strong, long-term sealing on stock or mild performance builds.
Fitment
- 2001–2004 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD — 6.6L Duramax LB7
- Service oversize: +.020" (approx. 4.075" bore)
- Configuration: Complete engine set (all 8 cylinders)
Cross-Reference / Alternatives (MAHLE on CPP Diesel)
- Standard (STD): MAHLE 41909 (STD)
- .010" Over (LB7): MAHLE 41909.01
- .030" Over (LB7): MAHLE 41909.03
- .040" Over (LB7): MAHLE 41909.04
Specifications for Mahle 41909.02
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | 41909.02 |
| UPC | 027067460806 |
| GTIN | 027067460806 |
| Engine Compatibility | 2001–2004 GM 6.6L Duramax LB7 (VIN “1”) |
| Bore / Oversize | +.020" (approx. 4.075") |
| Ring Construction | Top: ductile iron, plasma-moly face; Second: cast iron; Oil: GNS |
| Includes | Complete engine ring set for 8 cylinders |
| Shipping | Free Shipping (standard ground) |
| 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. |
FAQ
Is this a full engine set or per-cylinder?
This is a complete 8-cylinder ring set for one 6.6L engine.
Do I still need to check and set end gaps?
Yes. Rings are pre-lapped for quick seat-in, but you should always verify and set end gaps for your intended use (street, tow, performance).
Will 41909.02 fit later LLY/LBZ/LMM engines?
Mahle 41909-series rings cover LB7/LLY/LBZ/LMM in various listings. If you’re not building an LB7 (’01–’04), consider the 2001–2010 pages or choose the correct 2011–2016 42160 series ring sets.
