Product Description
MAHLE 9299823 is a DLC-coated, heavy-duty competition wrist pin engineered for the Cummins 5.9L platform (1989–2007). Built from high-strength steel and coated with Diamond-Like Carbon for reduced friction and wear, this pin is sized at 40.0 mm diameter x 19 mm wall x 82.8 mm length with a target mass of ~628 g. Ideal for high cylinder pressures and elevated RPM in towing, sled-pull, and race builds.
- Material: Steel with DLC coating
- Diameter: 1.575" (40.0 mm) • Length: 3.260" (82.8 mm)
- Approx. Mass: 628 g
- Sold individually (1 pin)
Fitment
- 1989–2002 Dodge Ram 2500/3500 w/ 5.9L Cummins 12-valve & 24-valve
- 2003–2007 Dodge Ram 2500/3500 w/ 5.9L Cummins Common Rail (24-valve)
FAQ
Will this pin work with forged or monotherm pistons?
Yes. The 40.0 mm x 82.8 mm size is used across performance forged and steel (Monotherm) pistons designed for 1.575" pins; confirm your piston’s pin bore and lock style before ordering.
Is the pin sold as a pair or set?
It’s sold individually (1 pin). Order quantity (6) for a full 6-cyl set.
What advantages does the DLC coating provide?
DLC reduces boundary friction, improves scuff resistance, and extends service life under high load—especially valuable in high boost and high EGT environments.
Do I need specific locks or bushings?
Use locks that match your pistons and verify small-end bushing condition/clearance. Many builders install fresh pin bushings and hone to spec during assembly.
What are the exact dimensions and mass?
Nominal dimensions are 40.0 mm diameter x 82.8 mm length with ~628 g mass; always measure and blueprint during engine assembly.
