Product Description
MAHLE 42160.04 is a .040" overbore complete piston ring set for the 2011–2016 GM 6.6L Duramax LML/LGH. Built to OE standards and pre-lapped for quick seating, this set delivers reliable sealing, low oil consumption, and long service life on stock or rebuilt engines.
- Application: 6.6L Duramax LML/LGH (2011–2016)
- Oversize: .040" over (approx. 4.095" / 104.14 mm bore)
- Configuration: Complete ring set for all 8 pistons
- Design: OE-quality construction, pre-lapped rings for faster break-in
Fitment
- 2011–2016 Chevrolet Silverado 2500HD/3500HD (6.6L Duramax LML)
- 2011–2016 GMC Sierra 2500HD/3500HD (6.6L Duramax LML)
- 2011–2016 GM fleet/commercial applications using LGH
Cross Reference / Related Sizes
- MAHLE family: 42160 (STD), 42160.01 (.010"), 42160.02 (.020"), 42160.03 (.030"), 42160.04 (.040")
What’s Included
Complete .040" overbore piston ring set for 8 cylinders (top, second, and oil rings).
FAQ
Will 42160.04 fit my 2011–2016 Duramax?
Yes—this .040" over set fits 2011–2016 LML/LGH engines. Verify your machine shop’s overbore before ordering.
Are the rings pre-lapped?
Yes. The MAHLE 42160 series is pre-lapped to help the rings seat quickly.
Is this a full engine set?
Yes—one kit services all 8 pistons.
What if I need standard or another oversize?
Order the corresponding MAHLE 42160 size (STD/.010/.020/.030). We list them below for easy cross-shopping. CPP Diesel
