Coated Pistons (.020)

Features:

• Fits 1989–1998 5.9L 12V Cummins engines
• .020" oversized for engine rebuilds
• Set includes six pistons with hardware
• Includes rings, wrist pins, and clips
• Drop-in replacement for factory pistons
• Chamfered tops prevent cylinder wall scuffing
• Thermal barrier coating for piston tops
• Ceramic skirt coating handles extreme heat
• Supports over 350,000 PSI of load
• Lubricates at temperatures over 1600°F
• Improves combustion efficiency and durability

Premium Piston Set for 5.9L Cummins

If you’re rebuilding your 12-valve Cummins and want a piston that’s built for more than just getting the engine back together, the Industrial Coated Pistons are a serious upgrade. These .020 oversized pistons are designed for 1989–1998 RAM 2500 and 3500 trucks and are packed with features that support high-performance use while still delivering the durability needed for heavy-duty work. Whether your truck is a weekend warrior, a tow rig, or a daily driver with a few power upgrades, this piston set is made to handle the heat—literally and figuratively. The pistons feature chamfered tops, which might sound like a small detail, but it makes a big difference when things get hot. By tapering the top edge of the piston, these are less prone to swelling under high temperatures, reducing the risk of scuffing the cylinder wall. That’s a common failure point in performance engines, and it’s one that Industrial Injection has taken seriously with this design.

Heavy-Duty Construction

What really sets these pistons apart, though, is the coating technology. The tops are finished with a thermal barrier coating that’s made for engines running higher fuel volumes, higher compression, or forced induction setups like turbos or nitrous. This barrier helps trap heat in the combustion chamber during the power stroke, which improves combustion efficiency and translates into more torque and horsepower—plus lower piston temperatures, which extends overall engine life. On the skirt side, you’ve got a ceramic coating designed to withstand incredible friction and load—up to 350,000 PSI—and still provide lubrication at temperatures exceeding 1600°F. That’s not just useful for race engines; it’s the kind of engineering that pays off on long pulls, heavy hauls, or any situation where your Cummins is working hard for extended periods. The cured coating is incredibly thin, too, so it doesn’t require any changes in piston clearance. Each kit comes complete with six pistons and includes rings, wrist pins, and clips—everything you need for a solid, balanced installation. If you’re already this deep into your engine, it just makes sense to go with components that can take a beating and still perform day after day.

Fits: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 RAM 2500/3500 5.9L 12V Cummins