Product Description
MAHLE 224-3409WR.040 piston set with rings for the 1994–2003 Ford 7.3L Power Stroke. This .040" overbore, .010" reduced compression height design provides added margin for towing and performance builds while maintaining OE-style reliability and ring seal. Non-coated skirts, matched ring pack, and pins/clips included for a clean, consistent assembly.
Fitment
- 1994–2003 Ford 7.3L Power Stroke (F-250/F-350/F-450/F-550 Super Duty, Excursion, many E-Series)
- Bore size: .040" over (block must be bored/honed accordingly)
- Sold as a complete set of 8 pistons with rings, pins & clips
Cross-Reference / Alternatives (MAHLE on CPP Diesel)
- Standard bore (reduced comp): MAHLE 224-3409WR (STD)
- .020" over (reduced comp): MAHLE 224-3409WR.020
- .030" over (reduced comp): MAHLE 224-3409WR.030
- Standard-compression family: MAHLE 224-3163WR (STD) | 224-3163WR.030 | 224-3163WR.040
Specifications for Mahle 224-3409WR.040
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | 224-3409WR.040 |
| UPC | 027067913401 |
| GTIN | 00027067913401 |
| Engine | Ford/Navistar 7.3L Power Stroke (1994–2003) |
| Bore Size | .040" over |
| Compression Height | .010" reduced (vs. stock) |
| Includes | (8) Pistons with rings, pins & clips |
| Shipping | Free Ground shipping (see 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. |
FAQ
Is this sold as a full set?
Yes—CPP Diesel sells this as a complete set of eight (8) pistons with rings.
Why choose reduced-compression pistons?
The .010" reduced compression height offers extra margin for towing/performance builds and helps ring seal durability when clearances are set correctly.
Do these pistons have coated skirts?
No—this configuration is a non-coated skirt, OE-style design.
Will .040" over work for my block?
Yes, if your machine shop has bored and honed the cylinders to +.040" and verified piston-to-wall clearance per MAHLE spec.
