Product Description
Strengthen your 6.4L build with the MAHLE 224-3851WR-0.75MM MaxxForce 7 piston with rings, engineered for hard-working 2008–2010 Ford Power Stroke and Navistar MaxxForce 7 platforms. This +0.75 mm oversize set includes pre-installed ring packs, wrist pins, and clips—ready to drop in after proper machine work for improved durability and sealing.
Fitment
- Ford Super Duty (F-250/F-350/F-450/F-550) 2008–2010 – 6.4L Power Stroke (VIN R)
- Navistar MaxxForce 7 diesel platforms using this piston family
Cross-Reference / Alternatives (Mahle on CPP Diesel only)
- MAHLE 224-3851WR (STD)
- MAHLE 224-3851WR-0.25MM (.25MM)
- MAHLE 224-3851WR-0.50MM (.50MM)
- MAHLE 224-3851WR-0.75MM (.75MM) — This page
- MAHLE 224-3953WR-0.75 (Reduced Compression)
Notes
+.75 mm oversize requires proper boring/honing and verification of piston-to-wall clearance and ring end gaps. Commonly used in 6.4L builds to address cracking seen on some OE pistons.
FAQ
Is the price for one piston or a full set?
CPP Diesel lists this item as a complete set of 8 pistons with rings for a full engine build.
Will this fit my 2008–2010 6.4L Power Stroke?
Yes—this piston family is specified for 2008–2010 6.4L (VIN R) and compatible MaxxForce 7 platforms. Always confirm your engine details before ordering.
Do I need machine work for .75MM?
Yes. .75 mm oversize requires professional boring and honing to the correct finish.
Specifications for Mahle 224-3851WR-0.75MM
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | 224-3851WR-0.75MM |
| Oversize | +0.75 mm |
| Engine Compatibility | 2008–2010 Ford 6.4L Power Stroke (VIN R); Navistar MaxxForce 7 |
| UPC | 027067053145 |
| GTIN | 027067053145 |
| What’s Included | 8 pistons (.75 mm), pre-installed ring packs, 8 wrist pins, 16 clips |
| 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 |
