Plunger & Barrels

Plunger & Barrels for Caterpillar Equipment

Caterpillar diesel engines rely on plunger and barrel assemblies for precise fuel metering, delivering the right amount of diesel to each cylinder at exactly the right moment. These critical components are crafted from high-strength materials to endure constant pressure, friction, and corrosion, ensuring consistent engine performance and fuel economy even in the most demanding industrial and construction applications. Whether you’re maintaining a 3208, 3304, 3306, or other Caterpillar models, premium replacement plungers and barrels are designed for a perfect fit and long service life.

At Propel Parts, we know your equipment only performs as well as its most critical components. That’s why we stock only plunger and barrel assemblies expertly engineered to OEM specifications for reliability, efficiency, and emissions compliance. Our selection covers a broad range of models and part numbers, so you can quickly find the exact replacement your engine needs for peak operation.

Choosing Propel Parts means your machines receive premium, exact-fit plungers and barrels, backed by fast shipping, expert part matching, and competitive pricing. Trust us to keep your Caterpillar engines running clean, powerful, and dependable, day in and day out. Browse our catalog today and experience the difference that quality-engineered fuel injection components make in your operation.