Product Description
MAHLE 224-3523WR marine-style bowl piston set with rings (standard bore) for the 5.9L Cummins. Built to OE specs with 40 mm pins and a factory ring pack, this set is a popular upgrade for performance builds that favor the marine bowl profile for improved mixture and durability.
- Piston head: Marine-style bowl
- Piston pin OD: 40.00 mm
- Ring pack (approx.): Top 3.00 mm / Second 2.40 mm / Oil 4.00 mm
- Material: Aluminum; skirt: non-coated
- Sold as: Set of 6 pistons with rings
Fitment
- Dodge Ram 2500 / 3500 with 5.9L Cummins 12-valve
- OE direct-fit years per MAHLE/XDP: 1991–1993 intercooled models (VIN 8th digit “C”). For 1994–1998 12-valve builds, many shops use marine-bowl pistons as a performance retrofit—verify compression height, bowl, and pin specs for your specific head/valve and build goals before ordering.
Cross Reference & IDs
- MAHLE: 224-3523WR (STD)
- Oversizes: 224-3523WR.020, 224-3523WR.040
- Alternate (’94–’98 12V standard bowl family): MAHLE 224-3520WR (verify spec)
- GTIN/UPC: 027067913562
FAQ
Will these drop into my 1994–1998 12-valve?
They are commonly used in performance retrofits, but OE-catalog fitment is for 1991–1993 intercooled 12-valve. Check compression height, bowl, and pin size against your rods/head before purchase.
What ring sizes come with the kit?
Typical pack is 3.00 mm / 2.40 mm / 4.00 mm; always verify with your ring supplier and MAHLE box label.
Do I need machine work?
Measure bores, set piston-to-wall per MAHLE spec, and verify RA/SF on the deck if the head is off. Balance and weight-match recommended on performance builds.
Notes
Intended for 12-valve Cummins builds. Verify injection timing, piston protrusion, and valve clearance when changing bowl geometry.
