Product Description
MAHLE 42097.01 piston ring set is the +0.010" oversize kit for the 2008–2010 Ford 6.4L Power Stroke (and select Navistar MaxxForce 7). Engineered to OE standards with plasma-moly top rings and chrome-faced oil control for durability and rapid seating.
- Oversize: +0.010" (bore ~3.876")
- Ring widths: 2.5 mm / 2.0 mm / 3.0 mm
- Materials: Top (UCR) carbon steel, plasma-moly; Second (LCR) ductile iron; Oil ring (OCR) ductile/cast with chrome face
- Sold as: Engine set for 8 cylinders
- UPC/GTIN: 027067933157
Fitment
- 2008, 2009, 2010 Ford F-250/F-350/F-450/F-550 Super Duty with 6.4L Power Stroke diesel (VIN R)
- Also fits select Navistar MaxxForce 7 applications—verify by engine build
Cross Reference / Notes
- MAHLE: 42097.010, aka 42097.01
- Pairs with MAHLE 6.4L pistons that specify ring set 42097.010
FAQ
Is this the correct size?
Yes, this is the +0.010" oversize set for rebuilt 6.4L cylinders bored 0.010" over (~3.876"). Measure and confirm bore before ordering.
Does it include rings for all 8 cylinders?
Yes—this is an engine set (all cylinders).
What are the ring materials?
Top ring is carbon steel with a plasma-moly face; second and oil rings are ductile/cast with a chrome face for wear resistance.
Break-in tips?
Use proper hone finish for moly rings, check end-gap per MAHLE specs, and vary load during initial run-in.
