MAHLE 929969355 MONOTHERM FORGED STEEL RACE PISTON SET (4.055 BR 4.724 STK 16.1 CR) FOR 04.5–07 CUMMINS 5.9L

Product Description

Put forged-steel race tech inside your late common-rail 5.9 with the MAHLE 929969355 MONOTHERM FORGED STEEL RACE PISTON SET. One-piece MonoTherm construction delivers extreme strength, ring stability, and heat resistance for high cylinder pressures and competition abuse. Spec’d at 4.055" bore, 4.724" stroke, and 16.1:1 compression, this set is engineered for late 2004.5–2007 Cummins 5.9L (24-valve CR) builds.

Mahle 929969355 MonoTherm forged steel pistons, Cummins 5.9L 04.5-07 race pistons, 4.055 bore pistons 16.1 compression, Mahle competition piston set 5.9 common-rail, S42170 ring set included, CPP Diesel Mahle pistons, Cummins 5.9 late CR pistons, forged steel diesel pistons, high boost high EGT durability, 1.575 pin -48.6cc crown

Fitment

• 2004.5–2007 Dodge Ram 2500/3500 — 5.9L Cummins (late common-rail, 24-valve)

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

• MAHLE 929969315 (Monotherm variant)
• MAHLE 224-3673WR (OE-style cast pistons w/ rings, STD)
• MAHLE 224-3673WR.020 (OE-style cast pistons w/ rings, .020)
• MAHLE S42170 PISTON RING SET (STD)

Notes

Set includes pistons, rings, pins, and locks. Targeted for competition/high-output builds; confirm compression, piston-to-wall, and valve clearances for your application.

FAQ

Is this a complete set for all six cylinders?

Yes—price is for a set of six forged-steel pistons with rings, pins, and locks.

Will these fit my 2003?

No—929969355 is engineered for late 2004.5–2007 common-rail applications. For 2003–early 2004 builds, see the correct Mahle part or consider a conversion.

What compression ratio should I expect?

Nominal 16.1:1 with typical late-CR assumptions. Actual CR depends on deck height, gasket thickness, and machining.

Specifications for Mahle 929969355