Product Description
Turn up the cylinder pressure and finish the race with confidence—MAHLE 929969315 MONOTHERM forged steel pistons deliver extreme heat stability and durability for 2004.5–2007 5.9L Cummins (24V common-rail). One-piece steel construction, precision valve pockets (0.075"), and an engineered bowl (-48.6cc) target a ~15.8:1 compression ratio in typical builds. Kit includes six pistons with rings, pins, and locks. Bore: 4.015" | Stroke: 4.724" | Rod length (O.D.): 7.559" | Compression height: 2.804" | Pin: 1.575".
Fitment
- 2004.5–2007 Dodge Ram 2500/3500, 5.9L Cummins 24-valve common-rail (04.5–07 injector/bowl style)
Cross-Reference / Alternatives (Mahle on CPP Diesel only)
- MAHLE 929969355 – Monotherm set (4.055" bore, 16.1 CR)
- MAHLE 224-3673WR – Cast piston kit w/ rings (STD), 04.5–07 5.9L
- MAHLE 224-3673WR.040 – Cast piston kit w/ rings (.040), 04.5–07 5.9L
- MAHLE 9300738 – Monotherm DLC-coated piston pin
Notes
Price is for a complete set of six pistons and includes rings, pins, and locks. Always verify piston-to-wall clearance and ring end-gaps per MAHLE guidance. Performance and fuel type may require adjusted clearances.
FAQ
Is this a full set?
Yes. Six pistons plus rings, pins, and locks are included.
Will these fit my 2004.5–2007 5.9L Cummins?
Yes—engineered for 24V common-rail engines using the 04.5–07 injector/bowl style. Confirm 4.015" bore.
What compression ratio should I expect?
Approximately 15.8:1 in typical builds (deck height, head gasket thickness, and chamber volume will influence final CR).
What ring set is included?
Mahle ring set included per kit specification; verify contents upon receipt and set end-gaps during assembly.
Specifications for Mahle 929969315
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | 929969315 (set) |
| Bore | 4.015" |
| Stroke | 4.724" |
| Rod Length (O.D.) | 7.559" |
| Compression Height | 2.804" |
| Pin Diameter | 1.575" |
| Bowl Volume | -48.6 cc |
| Approx. Compression Ratio | ~15.8:1 |
| Included | Pistons (x6), rings, pins, locks |
| UPC | Not specified by manufacturer |
| GTIN | Not specified by manufacturer |
| Shipping | Free Shipping (ground). Optional shipping insurance available at 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 |
