MAHLE 224-3953WR-0.75 PISTON WITH RINGS (.75MM REDUCED COMPRESSION) FOR 08-10 FORD POWERSTROKE

Product Description

Take compression and piston strength seriously on your 2008–2010 6.4L Power Stroke build with the MAHLE 224-3953WR-0.75 piston with rings. This .75mm oversize, reduced-compression piston set is engineered for honed 6.4L blocks and Navistar MaxxForce 7 applications, using MAHLE’s OE-level forging, coated skirts, and a matched ring pack to help address the well-known cracking issues of stock 6.4L pistons under heavy load, tuning, and towing.

Mahle 224-3953WR-0.75 pistons, 2243953WR075MM, Ford 6.4 Powerstroke .75mm reduced compression piston set, MaxxForce 7 piston with rings, 6.4L Super Duty 2008 2009 2010 pistons, coated skirt diesel pistons, CPP Diesel Mahle 6.4 pistons, reduced compression 6.4 Power Stroke piston kit, VIN R engine rebuild pistons

Fitment

• 2008–2010 Ford F-250 Super Duty – 6.4L Power Stroke (VIN R)
• 2008–2010 Ford F-350 / F-450 / F-550 Super Duty – 6.4L Power Stroke (VIN R)
• 2008–2010 Navistar MaxxForce 7 applications (verify with your engine builder)
• Oversize: +0.75 mm (requires proper boring/honing to MAHLE specifications)
• Sold as a complete set of eight (8) pistons with rings (no singles)

Why builders choose MAHLE 224-3953WR-0.75

• Reduced compression height design to help manage peak cylinder pressure and heat
• Skirt coating to reduce friction and scuffing during break-in and hard use
• Matched MAHLE ring pack for reliable sealing and oil control
• Complete set of 8 pistons with rings for full engine rebuilds

Cross-Reference / Alternatives (Mahle on CPP Diesel only)

• MAHLE 224-3953WR (STD) – standard-bore reduced compression
• MAHLE 224-3953WR-0.50MM – .50mm reduced-compression set
• MAHLE 224-3666WR (STD) – OE-style compression 6.4L pistons
• MAHLE 224-3666WR-0.75MM – .75mm OE-style compression pistons

Installation & Builder Notes

• Always measure cylinder bores for taper, out-of-round, and finish before ordering.
• Confirm final bore size for +0.75mm and piston-to-wall clearance with your machine shop.
• Verify ring end-gaps and follow MAHLE/engine builder specs for your targeted power level.

FAQ

Is MAHLE 224-3953WR-0.75 sold as a full set or per piston?

On CPP Diesel this part is sold as a complete set of eight (8) pistons with matched rings for a full 6.4L engine build.

What does “.75mm reduced compression” actually change?

The –0.75mm reduced compression height slightly lowers effective compression ratio compared to OE-style pistons. This helps manage peak cylinder pressure and temperature, which is a common strategy for addressing factory 6.4L piston cracking concerns on tuned or hard-worked trucks.

Will this fit all 2008–2010 6.4L Power Stroke trucks?

Yes, as long as your truck is a 2008–2010 Super Duty with the 6.4L Power Stroke (VIN R) and the block is properly machined for +0.75mm oversize. Always confirm VIN and machining requirements with your engine builder before ordering.

Does this piston set include the rings?

Yes. MAHLE supplies this part as a piston-and-ring assembly; each piston is matched with the correct ring pack for proper seal and break-in.

Can I mix these pistons with other compression or bore sizes?

No. For best results and proper balance, use the same part number and oversize on all eight cylinders. If you need a different bore size or OE-style compression, choose one of the related MAHLE sets listed in the Cross-Reference section.

Specifications for Mahle 224-3953WR-0.75