Product Description
PRICE SHOWN ON CPP DIESEL IS FOR A COMPLETE SET OF 8 PISTONS WITH RINGS. The MAHLE 224-3851WR-0.75MM MaxxForce 7 piston with rings is a proven upgrade for the 2008–2010 Ford 6.4L Powerstroke and a direct, OE-quality replacement for Navistar MaxxForce 7 applications. Each piston includes pre-installed rings along with pin and clips for ready-to-install convenience.
- Oversize: 0.75 mm (0.0295")
- OE-grade design: compensated ring grooves, expansion-controlled alloy, skirt coating for oil control and durability
- Sold by CPP Diesel as a complete set of 8 pistons with rings
Fitment
- Ford: 2008, 2009, 2010 F-250 / F-350 / F-450 / F-550 Super Duty with 6.4L Powerstroke (VIN R)
- Navistar: MaxxForce 7 diesel platforms (also used beyond 2010 in Navistar applications)
Notes: This “MaxxForce 7” piston is commonly used in 6.4L Powerstroke builds to address cracking issues seen on certain factory pistons. Verify cylinder machining and piston-to-wall clearance with your machine shop.
What’s Included
- 8× pistons (0.75 mm oversize)
- 8× pre-installed ring packs
- 8× wrist pins & 16× clips
FAQ
Is the price on CPP Diesel for one piston or a full set?
Our CPP Diesel price is for a complete set of 8 pistons with rings for a full engine rebuild.
Will this fit my 2008–2010 6.4L Powerstroke?
Yes—this part is specified for the 6.4L Powerstroke and the Navistar MaxxForce 7 platforms. Always confirm VIN R and engine details before ordering.
Why “MaxxForce 7” pistons in a Ford 6.4L?
They’re a common upgrade path used in 6.4L builds to mitigate cracking issues found on some OE pistons.
Do I need machine work?
Yes—0.75 mm oversize requires proper boring/honing to spec and verifying surface finish and clearances.
Are other sizes available?
Yes—STD, 0.25 mm, 0.50 mm, and 1.00 mm variants exist. Choose based on your machining needs.
