Replace the problematic stock VGT with a proven BorgWarner S300 setup.

The BD Diesel Iron Horn Turbo Manifold Package replaces the factory Holset variable-geometry turbo and restrictive exhaust manifold on 2007.5–2018 Ram 6.7L Cummins trucks. This kit pairs a BorgWarner S364SXE turbo with an 80mm turbine wheel and 0.91 A/R T4 turbine housing with BD’s Performance Plus T4 exhaust manifold. The result is more power, quicker response and lower EGTs and drive pressures than the stock setup.

BorgWarner S300 SX-E performance.

The SX-E turbo is built for performance, with a 360-degree thrust bearing and an enhanced compressor wheel and housing. Its FMW forged milled wheel is lighter and stronger than a cast wheel and withstands higher wheel speeds. The high-flow T4 turbine housing gives the engine room to breathe.

A complete, bolt-on package.

The kit includes BD’s Performance Plus T4 6.7L exhaust manifold and gaskets. The ductile iron manifold is EGR compatible, with EGR ports to retain your emissions equipment. It also retains the stock downpipe and intake, so no extra piping or hot-air intake conversion is needed. Aftermarket air intakes other than K&N may need alteration.

Key Features

• BorgWarner S364SXE turbo with 80mm turbine wheel and 0.91 A/R T4 housing
• Replaces the factory Holset VGT turbo
• 360-degree thrust bearing for added durability
• FMW forged milled compressor wheel: lighter, stronger, higher wheel speeds
• High-flow T4 turbine housing
• BD Performance Plus T4 ductile iron exhaust manifold and gaskets included
• EGR ports to retain emissions equipment
• Retains the stock downpipe and intake, with no extra piping required
• Fits 2007.5–2018 Ram 2500/3500 6.7L Cummins pickups (not cab-and-chassis)

What Problem Does This Solve?

• An unreliable factory VGT turbo. The stock Holset VGT is a known trouble spot on the 6.7L Cummins. The Iron Horn replaces it with a simpler, proven BorgWarner S300 turbo built for reliability.
• High EGTs and drive pressure. The stock turbo and manifold can create high exhaust gas temperatures and turbo drive pressure, which put extra stress on the engine. The Iron Horn is designed to reduce both, helping protect your head gaskets and extend engine life.
• Limited power potential. The factory turbo restricts how much power a modified 6.7L can make. BD rates this S364SXE/80 configuration at up to about 600 crank horsepower (the Iron Horn series spans roughly 550–700 hp), giving your build room to grow.

Is This Kit Right for You?

The S364SXE/80 0.91 A/R is one of BD’s recommended Iron Horn configurations, with a 64.5mm compressor inducer that steps up from the base S363 (63mm) kit for owners who want more power and lower EGTs than stock. BD offers the Iron Horn in several compressor, turbine and A/R combinations, so if you’re unsure which fits your goals, contact us with your truck’s modifications and intended use.

Tuning and Emissions

Tuning is required. A tuner or programmer is needed to bypass the factory VGT functions and codes. Because the S300 is a fixed-geometry turbo, the factory VGT exhaust brake will no longer function. Not for sale on licensed California vehicles.

Installation

Estimated installation time is about 9 hours. Professional installation is recommended.