Mahle 224-3673.020 Engine Piston .020 Overbore for 04.5-07 RAM 5.9L Cummins 24V

Vehicle Fitment

• 2004.5-2007 Dodge RAM 2500 5.9L Cummins 24V (High Output, VIN C)
• 2004.5-2007 Dodge RAM 3500 5.9L Cummins 24V (High Output, VIN C)

Fitment Notes

• .020" overbore (0.50mm) -- requires block machining to 4.035" bore
• High Output (HO) engine ONLY -- VIN code C
• Sold individually -- 6 required for a complete set
• This PN (224-3673.020) does NOT include rings -- piston, pin, and retainer rings only
• Matching ring set sold separately: Mahle S42170.020
• Piston with rings version: 224-3673WR.020
• Standard bore version: 224-3673
• .040" overbore version: 224-3673.040
• OE cross-reference: Cummins 4089670 / 4089671

Features

• Mahle Original OE-quality engine piston
• Compensated ring grooves for proper ring loading and oil control
• Expansion-controlled design for tight fitting clearances
• Reduces engine noise, wear, and emissions
• Aluminum construction
• Includes piston pin and retainer rings

Specifications

• Part Number: 224-3673.020
• Brand: Mahle (Clevite)
• Type: Engine piston with pin and retainers
• Engine: 5.9L Cummins B-Series 24V ISB (High Output)
• Overbore Size: .020" (0.50mm)
• Bore Diameter: 4.035"
• Quantity: Sold individually (6 per engine)
• Rings Included: No
• Pin Included: Yes
• Retainer Rings Included: Yes
• OE Cross-Reference: Cummins 4089670 / 4089671

Included Components

• 1x Mahle engine piston (.020" overbore)
• 1x Piston pin
• Retainer rings

Product Description

The Mahle 224-3673.020 is a .020" overbore (4.035" bore) engine piston for the 2004.5-2007 Dodge RAM 2500/3500 5.9L Cummins 24V High Output engine (VIN code C). Mahle is one of the largest OE piston manufacturers in the world, and these Original pistons are built to meet or exceed factory specifications with the same OE features found in production engines. Compensated ring grooves ensure proper ring loading and oil control, while the expansion-controlled design maintains tight fitting clearances to reduce engine noise, wear, and emissions.

Each piston includes a piston pin and retainer rings but does not include piston rings -- the matching ring set is Mahle S42170.020, sold separately. For convenience, the "WR" variant (224-3673WR.020) includes pre-mounted piston rings. Sold individually and priced per piston -- a quantity of 6 is required for a complete engine set. Cross-references Cummins OE part numbers 4089670 and 4089671. Also available in standard bore (224-3673) and .040" overbore (224-3673.040). Professional installation by a qualified engine builder is recommended.