PISTON 040

Get your tractor back to peak performance with this high-quality PISTON 040, designed for popular Ford 4000, 4600, 6600, and 6610 diesel tractors. Whether you're rebuilding a worn engine or upgrading components during routine maintenance, this piston offers a 0.040" oversize to recover lost compression and restore full engine function.

It replaces OEM part numbers E0NN6108EA, C5NN6108AH, and 3928182, and is engineered to fit precisely without modification. Crafted from premium heat-treated alloy steel, it’s built to withstand the heat and stress of heavy-duty agricultural work—ensuring long-lasting performance season after season.

This 100% new piston (not remanufactured) is machined to exact tolerances and meets strict OEM standards, making it a trusted choice for diesel engine rebuilders, farm mechanics, and equipment owners alike. Choose this tractor piston 040 for a dependable solution that keeps your tractor working hard when it matters most.