Product Description
MAHLE 224-3673WR.020 is a .020" oversize OE-spec piston set with rings for 2004.5–2007 Ram 2500/3500 5.9L Cummins (VIN C). MAHLE’s expansion-controlled alloy, compensated ring grooves, and precise skirt geometry deliver stable ring seal, clean oil control, and long-term durability—ideal for stock rebuilds, tow rigs, and daily drivers.
Fitment
- Vehicles: 2004.5, 2005, 2006, 2007 Dodge Ram 2500/3500 with 5.9L Cummins 24V (VIN C).
- Size/Oversize: .020" over; typical final bore ~4.035". Block must be measured and machined to spec; verify piston-to-wall and ring end gaps.
- Set contents: Six (6) pistons with mounted rings, pins, and locks.
Cross-Reference / Alternatives (Mahle only)
- MAHLE 224-3673WR (STD) – 04.5–07 Cummins 5.9
- MAHLE 224-3673WR.040 (.040) – 04.5–07 Cummins 5.9
- MAHLE S42170.020 Ring Set (.020) – 5.9L Cummins
Why MAHLE
- OE-grade materials and skirt profiles for quiet operation and stable clearances
- Matched ring pack (GCL-40UAW) for reliable seal and oil control
- Sold as a complete engine set (6 pistons with rings, pins, locks)
Install Notes
- Bore/hone to the required finish; verify piston-to-wall per MAHLE guidance
- Check ring end gaps, orientation, and groove cleanliness
- Confirm piston protrusion, gasket thickness, and valve clearance
FAQ
Does this set include rings and pins?
Yes. Each piston includes a matched ring set, wrist pin, and locks for all six cylinders.
Will this fit every 2004.5–2007 5.9L?
Yes, for VIN C 24-valve engines when machined to .020" over. Always verify engine VIN and oversize before ordering.
What is the final bore size for .020" over?
Typical final bore is ~4.035" when built to .020" over; confirm with your machinist.
Is any machining required?
Yes. The block must be measured and machined (bore/hone) to suit the .020" oversize pistons and ring specs.
Specifications for Mahle 224-3673WR.020
| Attribute | Value |
|---|---|
| Brand | MAHLE Original |
| Part Number | 224-3673WR.020 |
| UPC / GTIN | 027067897817 |
| Bore / Oversize | .020" over (~4.035" final bore) |
| Set Contents | 6 pistons w/ rings, pins, locks |
| Shipping Info | Free Shipping; package dims approx. 11.38" W × 9.25" H × 13.75" D |
| Engine Compatibility | 2004.5–2007 5.9L Cummins 24V (VIN C) |
| Country of Origin | Not specified |
| Prop 65 | This product can expose you to chemicals including lead and lead compounds. For more information, visit www.P65Warnings.ca.gov. |
