Bully Dog Big Rig Ceramic Coated Exhaust Manifold Kit For 1999-2003 Cummins ISX Non-EGR focus The Original and still the

The Original and still the strongest

2020-2023 Chevrolet Silverado 2500/3500 2WD/4WD

14mm Nitrocarb piston rod resists rock chips and rusting

MGP Brake Caliper Covers are rigorously tested for safety and fitment

Banks cools 118% better than flat-back covers in controlled 200hp 60mph sustained dyno tests

Bully Dog Big Rig Ceramic Coated Exhaust Manifold Kit For 1999-2003 Cummins ISX Non-EGR focus The Original and still theBully Dog Big Rig means business with their new premium ceramic coated exhaust manifolds the fastest flowing exhaust manifolds in the industry. They have been designed to provide quicker turbo spool, higher power output and more fuel economy for class 8 engines. Bully Dogs engineering team spent a considerable amount of time analyzing the possible flow layouts for each manifold using state of the art computer aided design software. Each manifold was