ENGINE PARTS & COOLING

Exhaust Manifold Fits CaterpillarSave money on gas and improve the efficiency of your Caterpillar engine by upgrading to this premium heavy duty Bully Dog ceramic coated exhaust manifold. It is one of the fastest flowing in the industry and provides a...

Ceramic Coated Exhaust Manifold Fits Freightliner, Volvo & Western Star W/ CAT Engine - Replaces 150-1914 / 100-5694Upgrade an old stock manifold on a Caterpillar engine with this premium, heavy duty Bully Dog ceramic coated exhaust manifold. It is one...

Exhaust Manifold Fits DetroitUpgrade an old stock manifold on a 14.0L EGR engine with this premium, heavy duty Bully Dog ceramic coated exhaust manifold. It is one of the fastest flowing in the industry and provides a quick turbo spool with a high power...

Exhaust Manifold Fits Kenworth And PeterbiltIf you are ready to upgrade an old stock manifold on a 1995-2003 Detroit 12.7L and 14.0L Series 60, 4 State Trucks has what you are looking for with this heavy duty Bully Dog Ceramic Coated Exhaust Manifold...

Heavy Duty Gauge Tuner Fits CAT, Cummins And Detroit EnginesIf you are looking for an easy to install tuner that provides a broad selection of customized options, 4 State Trucks offers this quality Heavy Duty Gauge Tuner from Bully Dog. It incorporates...

Ceramic-Coated Exhaust Manifold Fits CumminsUpgrade an old stock manifold on a Cummins ISX engine with this premium, heavy duty Bully Dog ceramic coated exhaust manifold. It is one of the fastest flowing in the industry and provides a quick turbo spool...

Ceramic-Coated Exhaust Manifold Fits DetroitIf you are ready to upgrade an old stock manifold on a 1995-2003 Detroit Series 60 12.7L and 14.0L engine, 4 State Trucks has what you are looking for with this heavy duty Bully Dog ceramic coated exhaust...

Ceramic-Coated Exhaust Manifold Fits CaterpillarThis high quality ceramic coated exhaust fits CAT Engines has a 20-30 horsepower increase and is ported to eliminate any flow interference while increasing airflow. It cools exhaust by up to 100 degrees and...

Performance Module For CumminsThe performance engine model is designed to fit Cummins ISX 2002-2010 models. The truck edition heavy-duty module controls timing, fuel, boost, and other vital engine parameters to optimize the combustion of the engine. This...

Performance Turbochargers Fits CATThis aftermarket CAT High Performance Turbocharger fits most C16, C15, & 3406E applications. Equipped with charge air cooler, quick spooling, substantial efficiency, and performance improvement over an OE turbo. This...

BESTfit Egr CoolerOur EGR cooler is sold individually and does not include the gasket. - EGR Cooler- Gasket (Not Included)- Sold IndividuallyAftermarket Replacement Part (Not OEM)

BESTfit EGR CoolerEnhance your engine's efficiency with our aftermarket EGR Cooler. Measuring 17 inches in length, this component is sold individually to provide optimal performance for your vehicle. - EGR Cooler- 17 Inch Length- Sold...