Our Cummins 4B/3.9L Applications are a popular engine used in Step Vans and other Commercial Vehicles

Important Before calling to request price and availablity, please have the following information readily available.

*The original Engine Serial Number

*The original Engine CPL Number

*Application, Year and Horsepower for engine being replaced

Complete Drop-in Includes

*Long block engine *Complete Fuel system*Oil pan *Turbo Charger*

*Filters *Intake and Exhaust manifolds *New Oil cooler core

2 year/ Unlimited Mile warranty On complete Drop-in Configurations