Product Description
MAHLE 42168.04 / S42168.040 premium piston ring set sized .040" over for the 2011–2017 Ford 6.7L Power Stroke. Built to OE specs using proven materials and coatings to restore compression and oil control on high-mileage rebuilds. Sold per cylinder — order quantity 8 for a complete engine.
Key Features
- OE-quality rings engineered for 6.7L Power Stroke
- .040" oversize for overbore rebuilds
- Material & profile: UCR (top) plasma-moly carbon steel, LCR (2nd) ductile iron, OCR (oil) carbon steel; axial heights 3.0mm / 2.0mm / 2.5mm
- Meets or exceeds factory specifications
Fitment
- 2011, 2012, 2013, 2014, 2015, 2016, 2017 Ford F-250 / F-350 / F-450 / F-550 Super Duty with 6.7L Power Stroke diesel (VIN T)
What’s Included
- One (.040") piston ring set for a single cylinder (top, second, oil ring assembly)
Cross Reference & IDs
- MAHLE: 42168.04, 42168.040, S42168.040
- UPC/GTIN: 027067875976
FAQ
Is this a full engine set?
No. This is one cylinder worth of rings. Order 8 sets for a complete 6.7L V8.
Will .040" rings work on a standard bore?
No. .040" rings are only for cylinders bored .040" over. Verify machine work before ordering.
What materials and coatings are used?
Top ring is plasma-moly carbon steel; second ring is ductile iron; oil ring assembly is carbon steel, with profiles matched to OE performance.
Do these meet OE specs?
Yes—they are engineered to meet or exceed OE specifications for sealing and durability.
