1998.5-2002 Cummins Stock Pistons (PDM-3354)

Fits

These are drop-in replacement stock pistons sold complete with rings, wrist pins and clips. 

Skirt and Top Coating: PDM's Ceramic Piston Skirt Coating is designed to be used, on any rigid or semi-rigid surface experiencing sliding, rotating or oscillating friction.

This coating will carry loads in excess of 350,000 PSI as well as lubricate at temperatures in excess of 1600f. This coating combines the durability of a ceramic resin with the lubricity of the ceramic lubricant.

It is used in applications where high temperatures, high loads and high speeds are experienced. When higher temperatures, than most other types of coatings can provide protection, are experienced, this coating is fully capable of carrying the load. Gray in color it acquires a glass-like finish in use. The cured film thickness of .001 or less requires no change in piston clearance.

PDM's Thermal Barrier Coating for piston tops is designed for performance engines running; Nitrous oxide, supercharged or turbocharged. It creates a hard surface specifically designed for engines running High volumes of fuel and/or high compression ratios.

The thermal barrier coating reduces part temperature, keeps heat in the combustion chamber longer through the power stroke, increases torque, H.P. and improves combustion chamber efficiency.

Fly Cut (valve relief): .100

Fly cutting is a machining process used to add piston to valve clearance when using high lift camshaft.

Chamfering:

The performance and race Cummins pistons are Chamfered (The top is tapered to help avoid swelling and Scuffing the Cylinder Wall.)

Part Number: PDM-335X

Stock Piston Features:

• Drop-In Replacement
• Complete W/ Rings, Wrist Pins And Clips
• Standard Size

Performance Piston Features:

• Drop-In Replacement
• Complete w/ Rings, Wrist Pins And Clips
• Standard Size
• Chamfered Tops
• Thermal Barrier Coating For Piston Tops
• Ceramic Piston Skirt Coating

Race Piston Features:

• Drop-In Replacement
• Complete W/ Rings, Wrist Pins And Clips
• Standard Size
• Fly Cut with .100 Valve Reliefs
• Chamfered Tops
• Thermal Barrier Coating For Piston Tops
• Ceramic Piston Skirt Coating