MAHLE 224-3673WR.040 PISTON KIT W/RINGS (.040) FOR 04.5–07 CUMMINS 5.9

Product Description

Restore compression, curb oil consumption, and keep EGTs in check with the MAHLE 224-3673WR.040 piston kit for 2004.5–2007 Ram 2500/3500 5.9L Cummins (VIN C, engine code ETH). This .040" (+1.00 mm) oversize set includes six OE-grade pistons with pre-installed rings, wrist pins, and clips—engineered with expansion-controlled skirts and compensated ring grooves for durability under heavy tow and tune.

Mahle 224-3673WR.040 pistons, .040 over 5.9 Cummins pistons, VIN C ETH common rail pistons, Mahle Cummins piston kit with rings, 17.1:1 compression ratio, OE replacement pistons, CPP Diesel Mahle piston set 224-3673WR family, Cummins 5.9 L common rail 2004.5 2005 2006 2007

Fitment

• 2004.5–2007 Dodge Ram 2500/3500 – 5.9L Cummins 24V Common Rail (VIN C, engine code ETH)

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

• MAHLE 224-3673WR (STD)
• MAHLE 224-3673WR.020 (.020)
• MAHLE S42170.040 RING SET (.040) – 5.9L Cummins

Notes

.040" oversize requires proper boring/honing and piston-to-wall clearance. Always verify ring end-gaps and crown-to-valve clearance with your cam/ gasket stack.

FAQ

Is the listed price for one piston or a full set?

It’s for a complete set of six pistons with rings, pins, and clips.

Will these fit my 2006 5.9L Cummins?

Yes—fits 2004.5–2007 5.9L Cummins (VIN C, common rail). Confirm engine code ETH and machine to .040" over.

What ring sizes and compression ratio?

Typical ring grooves ~3.0/2.0/3.0 mm; nominal CR about 17.1:1 (verify per build).

Specifications for Mahle 224-3673WR.040