Product Description
MAHLE 224-3409WR is the standard-bore, reduced-compression piston set with rings for the 1994–2003 Ford 7.3L Powerstroke. This WR kit comes with rings installed and uses a .010" reduced compression height to handle higher cylinder pressures while maintaining OE reliability. Non-coated skirts and OE geometry deliver stable sealing and long life in towing, work, and daily-driver builds. (Sold as a complete set of 8.)
Fitment
- 1994–2003 Ford 7.3L Powerstroke — F-250, F-350, F-450, F-550, Excursion, E-Series (verify bore & build specs)
- Bore size: Standard (4.11")
- Configuration: .010" reduced compression height for durability under load
- Includes: (8) pistons with rings installed
Cross-Reference / Alternatives (MAHLE on CPP Diesel)
- Oversize +.010: MAHLE 224-3409WR.010
- Oversize +.020: MAHLE 224-3409WR.020
- Oversize +.030: MAHLE 224-3409WR.030
- Oversize +.040: MAHLE 224-3409WR.040
- Standard-compression family (STD): MAHLE 224-3163WR (STD)
- Standard-compression +.020: MAHLE 224-3163WR.020
- Standard-compression +.030: MAHLE 224-3163WR.030
- Standard-compression +.040: MAHLE 224-3163WR.040
Specifications for Mahle 224-3409WR
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | 224-3409WR (STD, Reduced Compression) |
| UPC | 027067913357 |
| GTIN | 00027067913357 |
| Engine | Ford/Navistar 7.3L Powerstroke (1994–2003) |
| Bore Size | Standard (4.11") |
| Compression Height | Reduced by .010" |
| Skirt | Non-coated |
| Includes | (8) Pistons with rings installed (pins & clips as supplied by Mahle) |
| Shipping | Free Shipping (contiguous U.S., ground service) |
| 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 the price for one piston or a full set?
It’s sold and shipped as a complete set of eight (8) pistons with rings.
What does “reduced compression” mean on this set?
These use a .010" reduced compression height—a popular choice for builds targeting higher cylinder pressure or specific machining targets while keeping OE reliability.
Are the skirts coated?
No—this configuration uses non-coated skirts, just like OE style.
Do the rings come installed?
Yes, this WR kit includes rings installed on each piston.
