Product Description
MAHLE 224-3666WR is an OE-quality standard-bore piston kit with rings for the 2008–2010 Ford 6.4L Power Stroke (VIN “R”). Coated skirts, OE dish/bowl, and matched ring pack deliver quiet operation, oil control, and durability.
PRICE SHOWN ON THIS CPP PRODUCT PAGE IS FOR A COMPLETE SET OF 8 PISTONS WITH RINGS.
Features
- OE-style aluminum pistons with coated skirts
- Includes rings (RFK13PF code)
- Standard bore (STD)
- Designed for factory compression and emissions equipment
Fitment
- 2008, 2009, 2010 Ford Super Duty F-250/F-350/F-450/F-550 with 6.4L Power Stroke Diesel (VIN “R”, 32-valve)
Cross Reference & IDs
- MAHLE/Clevite: 224-3666WR (STD), variants: 224-3666WR-0.25MM, 224-3666WR-0.50MM, 224-3666WR-0.75MM
- MAHLE alt: 224-3666
- GTIN/UPC: 027067927392
- Ring pack code: RFK13PF
What’s Included
- Set of 8 pistons (STD)
- Wrist pins & retainers
- Matched piston ring sets
FAQ
Is the price for one piston or a full set?
This CPP listing is priced as a complete set of 8 pistons with rings.
Will these fit my 6.4L?
Yes—fits 2008–2010 Ford Super Duty with 6.4L Power Stroke, VIN “R”.
Are rings included?
Yes, each piston includes a matched ring set (RFK13PF).
Do I need machine work?
For STD bore installs, verify cylinder roundness/taper and finish; hone as required. If overbore is needed, use the matching MAHLE oversize sets (.25mm/.50mm/.75mm).
What else should I buy?
We recommend ARP 250-4203 head studs during any 6.4L top-end/long-block refresh for reliability.
