Product Description
MAHLE 224-3953WR-0.50MM piston set with rings for the 2008–2010 Ford 6.4L Power Stroke and Navistar MaxxForce 7. Reduced-compression design with coated skirts helps address cracking issues seen in stock pistons. Price on this CPP Diesel page is for a complete set of eight (8) pistons with rings.
- Oversize: 0.50 mm (for properly bored/honed blocks)
- Design: Reduced compression height, coated skirt, OE-quality casting
- Sold as: Full engine set of 8 pistons with matched rings
- Warranty: 1-Year Limited (manufacturer)
Fitment
- 2008, 2009, 2010 Ford F-250 / F-350 / F-450 / F-550 Super Duty with 6.4L Power Stroke
- Navistar MaxxForce 7 (applicable years/models as equipped)
Cross Reference / Alternatives
- MAHLE: 224-3953WR (STD), 224-3953WR-0.75MM (0.75 mm)
- Summit Racing reference: MAH-S1699 • UPC: 027067992451
- XDP SKU: MCI224-3953WR-0.50
What’s Included
Eight (8) MAHLE pistons and eight (8) matched ring sets for a complete engine set.
Notes
- Sold in sets only. Machine shop measurement and proper piston-to-wall clearance required.
- CPP Diesel lists the complete set price for clarity.
- Shipping restrictions may apply in certain regions (e.g., CA).
FAQ
Is this a full set?
Yes. This product is sold as a set of 8 pistons with rings for a complete engine.
What does “reduced compression” mean?
These pistons use a slightly lower compression height to reduce peak cylinder pressure, a common upgrade to help mitigate cracking in factory 6.4L pistons.
Will .50 mm oversize fit my block?
Only after proper boring/honing by a qualified machine shop. Verify final clearances to MAHLE specs.
Do rings come pre-fitted?
Rings are matched to each piston but must be installed and gapped to specification during assembly.
What if I need a different size?
Alternatives include STD (224-3953WR) and 0.75 mm (224-3953WR-0.75MM). Choose based on machine work requirements.
