Bully Dog Ceramic Coated FTP Exhaust Manifold 1999-03 Cummins ISX Big Rig 85104 (88299)

The Bully Dog Big Rig Ceramic Coated FTP Exhaust Manifold 85104 (often cross-referenced with Full Tilt Performance part 88299) is specifically engineered for heavy-duty Class 8 trucks. This performance manifold is designed to improve airflow, reduce temperatures, and increase horsepower.

Vehicle & Engine Compatibility

The 85104 manifold is a high-performance upgrade primarily designed for the following engine applications:

• Engine: Cummins ISX / Signature 600 Series

• Model Years: Typically fits 1999–2003 models.

• Configuration: Specifically for Non-EGR (Exhaust Gas Recirculation) engines.

• Turbo Flange: Equipped with a T-6 Flange.

• OEM Replacement: Directly replaces Cummins OEM part number 3880199 and 115-0199.

Key Performance Features

• Reduced Turbo Lag: The high-flow design allows the turbo to spool faster for better throttle response.

• Lower Temperatures: The ceramic coating helps reduce exhaust gas temperatures (EGTs) by 80–100°F and radiant heat by up to 300°F.

• Fuel Efficiency: Users can expect a fuel mileage increase of approximately 0.2 to 0.3 MPG.

• Power Gains: Provides an additional 28–32 horsepower to the rear wheels.

• Durability: Features thicker manifold flanges and walls to prevent the common warping, cracking, and leaking found in stock manifolds.