Product Description
MAHLE 224-3666WR-0.50MM piston kit with rings for the 2008–2010 Ford 6.4L Power Stroke (VIN R). PRICE ON THIS CPP DIESEL LISTING IS FOR A FULL SET OF 8 PISTONS WITH RINGS, PINS, AND RETAINERS.
- Oversize: 0.50 mm (.020") over
- Bore: 3.885" (≈98.48 mm)
- Skirt: Coated for reduced friction
- Ring Type Code: RFK13PF
- Package contents: 8 pistons, rings, pins & retainers (sold as a complete set)
Fitment
- 2008, 2009, 2010 Ford F-250 / F-350 / F-450 / F-550 Super Duty with 6.4L Power Stroke (VIN R)
Cross Reference / Related
- MPN: 2243666WR050MM
- GTIN/UPC: 027067927408
- Alternate sizes: 224-3666WR (STD), 224-3666WR-0.25MM, 224-3666WR-0.75MM
- Related ring set for .020"/.50 mm: MAHLE S42097.020
FAQ
How is this sold?
As a complete set of 8 pistons with rings, pins, and retainers.
What overbore size is this?
0.50 mm over (.020") with a 3.885" bore.
Does it include rings and pins?
Yes—rings, pins, and retainers are included; skirts are coated.
Which trucks does it fit?
2008–2010 Ford Super Duty models equipped with the 6.4L Power Stroke (VIN R).
Any install tips?
Verify cylinder finish and clearances; many builders upgrade to ARP 250-4203 head studs during a rebuild.
