2003

Factory coolant hose "T" fittings are molded hose or made out of plastic and are prone to cracking at junctions, causing coolant loss. Replace your worn or leaky factory coolant hose system with PPE's Performance Silicone Coolant Hose Kit.Perfect for...

Factory coolant hose "T" fittings are molded hose or made out of plastic and are prone to cracking at junctions, causing coolant loss. Replace your worn or leaky factory coolant hose system with PPE's Performance Silicone Coolant Hose Kit.Perfect for...

These heavy duty intake boots are Four Ply Silicone and won't crack or split like the factory rubber boots.Features:Heavy Duty High Temperature Four Ply Silicone BootsEvery boot/hose that Sinister manufactures is designed to exceed factory...

Once you've installed an aftermarket Fuel Filtration System such as our FASS Titanium Series, the use of the factory fuel filter is no longer required and can be removed. Because your Duramax factory fuel filter is located after our filtration System you...

A FASS Fuel Systems can be a beneficial upgrade for your GM Duramax 6.6L diesel engine, this is because your Duramax doesn't come with a factory System like other diesels. This requires your CP3 injection System to pull your fuel under a vacuum, adding...

This is the Raptor-4G RP-150 fuel system for the 2015-2016 6.6L Duramax. This system mounts to the frame jig in front of the fuel tank for a clean looking installation. The suction line connects to the factory suction fitting on top of the fuel module...

Don't let a stock intercooler boot ruin your day, at the track or on the strip. Upgrade your 7.3L today with Sinister Diesel Upgraded Intercooler Charge Pipe Silicone Boots and Clamps.Features:Heavy Duty High Temperature Four Ply Silicone BootsEvery...

This is the Raptor-4G RP-150 fuel system for the 2003-2004.5 Common Rail Cummins without the factory fuel pump in the fuel tank. This system mounts to the frame rail using the supplied sandwich plate mounting system. The suction line connects to the...

Flow and Performance:The intercooler tubes are constructed of 3" mandrel bent aluminum tubing for maximum flow then powder-coated wrinkle-black for heat and corrosion resistance. The smooth bends and larger diameter tubing allow for low turbulence,...

Perfect Fit:Utilizes the factory mounting locations to provide stability for a hassle-free installation. Includes high quality stainless steel clamps and heavy-duty 5-Ply couplings for strength. Fits OEM intercooler.Flow and Performance:This aFe Power...

The aFe intercooler tube represents the next generation of Diesel performance products.Perfect Fit:Tube comes complete with 4-ply heavy duty silicon couplings and constant tension T-bolt clamps for a tight and secure installation. Silicone Couplings with...

The Sinister Diesel Charge Pipe Kit with the Intake Elbow for the Powerstroke 6.0 includes the intercooler pipe that connects the intercooler to the intake, the pipe that connects the turbocharger compressor to the intercooler, and the intake elbow. This...