Product Description
Fix cracked OE pistons and restore sealing under heavy load with the MAHLE 224-3851WR-0.25MM MaxxForce 7 piston set for 2008–2010 Ford 6.4L Power Stroke (VIN R) and Navistar MaxxForce 7. This +0.25 mm (+0.010") oversize kit includes pistons, matched ring packs, pins, and retainers for an OE-grade rebuild that stands up to towing, tuning, and daily work.
Fitment
- 2008–2010 Ford F-250/F-350/F-450/F-550 Super Duty – 6.4L Power Stroke (VIN R)
- Navistar MaxxForce 7 6.4L applications (select 2008–2015 medium-duty platforms)
Cross-Reference / Alternatives (Mahle on CPP Diesel only)
Notes
Block must be bored and plateau-honed to +0.25 mm; verify piston-to-wall and ring end gaps per Mahle spec before assembly. Sold as a complete set of eight.
FAQ
Does this fit my 6.4L Power Stroke?
Yes. The 224-3851WR family is engineered for 2008–2010 Ford 6.4L Power Stroke (VIN R) and Navistar MaxxForce 7 platforms when machined to the listed oversize.
What’s included in the kit?
Eight Mahle pistons, matched ring packs, wrist pins, and retainers—ready for machine-shop matched installation.
Why choose the Mahle MaxxForce 7 version?
Mahle’s OE-grade design and skirt coating address common durability concerns seen in stock 6.4L pistons, improving longevity under heat and load.
Specifications for Mahle 224-3851WR-0.25MM
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | 224-3851WR-0.25MM |
| Oversize | +0.25 mm (+0.010") |
| Engine Compatibility | 2008–2010 Ford 6.4L Power Stroke; Navistar MaxxForce 7 6.4L |
| UPC | 027067053121 |
| GTIN | 027067053121 |
| Shipping | Free Shipping (ground); optional shipping insurance available at checkout |
| Prop 65 | This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Learn more |
