Oversized Pistons .020

Features:

• Sold as a complete set of six
• Includes rings, wrist pins, and clips
• .020 oversized for rebuilt 12V engines
• Big bowl design for marine applications
• Drop-in replacement for stock pistons
• Ideal for performance or heavy-duty use
• Precision machined for consistent fit

Stock Piston Set for 12 5.9L Cummins

If you're rebuilding a 12-valve Cummins and want a piston setup that delivers factory fit with added performance potential, the Industrial Injection.020 Marine Big Bowl Stock Pistons are a rock-solid choice. Designed for 1989–1998 5.9L Cummins engines, this set of .020 over pistons gives you a clean, drop-in solution that's perfect for fresh builds, performance upgrades, or heavy-duty workhorses. Whether you’re chasing reliability, prepping for more power, or just freshening up a tired bottom end, these pistons are built to meet the demands of hard-working diesels.

Complete with High-Quality Hardware

Each piston in the set comes complete with rings, wrist pins, and clips, so you're not left piecing together a kit from multiple sources. The marine-style big bowl design promotes efficient combustion and is ideal for builds that lean toward towing or performance use. Precision machining ensures consistent fitment, helping you maintain proper cylinder pressure and sealing under load. These pistons are all about keeping your Cummins strong, reliable, and ready to work—mile after mile, pull after pull. If you're building it once and building it right, this is a smart place to start.

Fits: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 Dodge 5.9L Cummins 12V