Product Description
MAHLE 41940.01 is a .010" oversize piston ring set engineered for the 2003–2007 Ford 6.0L Power Stroke. Rings are pre-lapped and non-file-fit to speed installation while delivering excellent sealing, reduced friction, and long service life.
- Bore size: 3.750" (+.010") / 95.25 mm
- Top ring: Carbon steel, plasma-moly face, 2.3 mm
- Second ring: Cast iron, 2.0 mm
- Oil ring: CP-20 assembly, 3.44 mm
- Sold as a complete engine set; 1-year limited warranty
Fitment
- 2003–2007 Ford F-250 / F-350 / F-450 / F-550 with 6.0L Power Stroke (VT365)
- Also used on select E-Series 6.0L applications (e.g., 2004–2010 E-350/E-450) — verify by VIN and bore size
Cross Reference Numbers
- Navistar/International: 1843264C91
What’s Included
Complete .010" oversize ring set for one 6.0L engine (top, second, and oil ring assemblies) — non-file-fit.
FAQ
Will these rings fit my 2003–2007 6.0L Power Stroke?
Yes — they’re specified for 2003–2007 Ford Super Duty trucks with the 6.0L diesel. Some E-Series vans with the 6.0L also use this set; confirm by VIN and bore size.
What does +.010" mean?
It indicates a 0.010" oversize for cylinders that have been bored/honed .010" over the standard 3.740" bore (to roughly 3.750").
Are these file-fit rings?
No. This kit is non-file-fit and pre-lapped to seat quickly. Always check end gaps after machining.
What materials are used?
Top ring is carbon steel with plasma-moly facing; second ring is cast iron; oil ring is a CP-20 assembly. Widths are 2.3 mm / 2.0 mm / 3.44 mm respectively.
Is this a full engine set?
Yes — sold as a complete set to service one 6.0L V8 engine.
