PETERBILT STEP-BOX Cat Tools It injects Diesel Exhaust Fluid

It injects Diesel Exhaust Fluid (DEF) into the exhaust stream to reduce NOx emissions

Its advanced filtration technology ensures clean fuel delivery

and bolt-on axle seats

protecting critical engine parts from wear and extending engine lifespan

It features a 3-hole Qwik-Snap hose holder for fast

PETERBILT STEP-BOX Cat Tools It injects Diesel Exhaust FluidThe PETERBILT STEP BOX is a genuine OEM step designed for DPF access on models 384, 386, 388, 389, 367, 567, and 579 from 2011 to 2017. Engineered for precise fit and durability, it provides a secure and stable platform for maintenance tasks, ensuring safe and efficient access to the diesel particulate filter area consistent with Peterbilts quality standards.