Product Description
MAHLE S42168.020 is a premium .020" oversize piston ring set for the 2011–2017 Ford 6.7L Power Stroke. Built from ductile iron, carbon steel, and stainless steel with a plasma-moly top ring and nitrided oil control ring, this set meets or exceeds OE specs for durability and sealing. Contains rings for a single cylinder; order 8 sets for a complete engine.
- Application: Ford 6.7L Power Stroke V8 diesel (Scorpion)
- Size: +.020" oversize (0.50 mm)
- Typical ring heights: Top 3.0 mm, Second 2.0 mm, Oil 2.5 mm (family spec)
- Material/face: Top ring plasma-moly; carrier rings ductile iron/carbon steel; oil ring stainless (family spec)
- GTIN/UPC: 027067875969
Fitment
- 2011, 2012, 2013, 2014, 2015, 2016, 2017 Ford F-250 / F-350 / F-450 / F-550 Super Duty with 6.7L Power Stroke
Cross Reference & Related Sizes
- MAHLE Family: S42168 (STD), S42168.020 (+.020"), S42168.040 (+.040")
Notes
- Single-cylinder set: quantity 8 required per engine
- Verify bore size and cylinder finish (RA/Rz) before installation
FAQ
Q: Does this include enough rings for the entire engine?
A: No—this is a single-cylinder ring set. Order 8 for a complete engine.
Q: Will these fit my 2011–2017 6.7L Power Stroke?
A: Yes, if your cylinders are bored to +.020". Stock bore requires the standard size S42168.
Q: What ring materials/coatings are used?
A: MAHLE’s 6.7L sets use premium materials with a plasma-moly top ring and nitrided oil ring for long life and low friction (family spec).
Q: Do I need to gap the rings?
A: Yes—always check and set end gaps per MAHLE/Ford specs for your build and usage.
