5.9 CR Early (2003-2004) Cummins

🛠️ Stainless Exhaust Manifold Stud Kit – 12pc | Fits 1989–2018 Cummins (Aftermarket Manifolds Only) Upgrade your manifold hardware with this Stainless Steel Exhaust Manifold Stud Kit, built for durability, strength, and long-term corrosion resistance. Designed for use with aftermarket manifolds on 1989–2018 Cummins diesel engines, this...

Stainless Diesel Turbo Wheel Oil Cap – Real Compressor Wheel Design | Fits Stock Valve Cover Upgrade your engine bay with the Stainless Diesel Turbo Wheel Oil Cap, a unique blend of function and style built for diesel enthusiasts who demand more. Crafted from...

🔥 SD T4 Lava Turbo Blanket – High-Temp Turbo Heat Shield for T4 Turbine Housings Reduce turbo lag, lower intake air temps, and protect engine bay components with the SD T4 Lava Turbo Blanket. Designed for high-performance diesel and gasoline engines, this heavy-duty heat...

🛠️ 3rd Gen HE351 Turbo Downpipe Flange – Mild Steel | Fits S300 Turbo (4.375" OD) This HE351 Flange is a mild steel weld-on flange designed specifically for use on 3rd Gen Dodge Ram trucks equipped with S300 turbos. With a 4 3/8" outer diameter, it’s built to...

🛠️ Boost Reference Block-Off Plug – Maintain Mechanical Wastegate Function This boost reference block-off plug is the perfect solution for 5.9L and 6.7L Cummins owners looking to eliminate the electronic boost reference signal while retaining full functionality of the mechanical wastegate. Ideal for custom...

Air Intake Temp Sensor Weld Bung – Mild Steel for ’03–’18 Cummins Common Rail Easily install an AIT sensor into your custom piping setup with this durable mild steel weld bung. Designed specifically for 2003–2018 Cummins Common Rail diesel engines, it fits both 4"...

🔥 Stainless Diesel Spring Gate Wastegate Actuator – HE351 Turbo | 3G & 2G Twin Position Fitment Take full control of your boost with the Stainless Diesel Spring Gate Wastegate Actuator for the HE351 turbo. This spring-actuated boost controller is built for precision and...

This is a drop-in replacement for 2003-2007 5.9  Whether you are looking to replace your old worn-out stock turbo with a simple bolt on upgrade, sneak past your friends with a little ‘something’ under the hood that is not noticeable or be the king...

This is a drop-in replacement for 2003-2007 5.9 Whether you are looking to replace your old worn-out stock turbo with a simple bolt on upgrade, sneak past your friends with a little ‘something’ under the hood that is not noticeable or be the king...

🔍 Boost Leak Tester Kit – Universal Turbo Inlet Tool with Billet Plug, Silicone Coupler & T-Bolt Clamps Stop guessing and start diagnosing with our universal Boost Leak Tester Kit—designed to quickly locate boost leaks in your turbocharged system by pressurizing the entire intake...

🔧 Boost Leak Tester Master Kit – Turbo Inlet Pressure Tool with Billet Plug, Silicone Boots & T-Bolt Clamps Boost Leak Testing Made EasyThe best way to ensure your turbo is working at its best is by checking for boost leaks. Boost leaks are...

🔥 Stainless Diesel FLOW BOSS™ 2G Swap Air Intake Kit – For 5.9L Cummins (2003–2007) This is the same high-performance air intake kit used in all of our Stainless Diesel 2G swap kits for 2003–2007 5.9L Common Rail Cummins trucks. Designed for use with...

Stainless Diesel 'Monster Foot' Competition Cummins Exhaust Manifold – T-6 24V Sled Puller Engineered for high-stakes competition and serious sled pulling, the Stainless Diesel ‘Monster Foot’ T-6 24V Exhaust Manifold delivers race-ready performance and unmatched durability. Crafted with precision and built to dominate, this...

This is a drop-in replacement for 2003-2007 5.9 Whether you are looking to replace your old worn-out stock turbo with a simple bolt on upgrade, sneak past your friends with a little ‘something’ under the hood that is not noticeable or be the king...

🛠️ Rear Coolant Bypass Kit – Fits 1998–2016 Dodge Cummins 5.9 & 6.7L (24V & Common Rail) Reduce rear cylinder pressure and improve coolant flow with this bolt-on Rear Coolant Bypass Kit, designed specifically for 1998–2016 Dodge Cummins 24-valve and Common Rail cylinder heads. This system...

🛠️ S400 V-Band Intercooler Pipe – Single Turbo Swap | Fits 2003–Early 2010 3rd Gen Dodge Cummins This S400 V-Band Intercooler Pipe is designed for single turbo swap setups using an S400 turbocharger with a V-band compressor outlet. Used in our proven single turbo kits, this pipe...

🛠️ 3/4" Aluminum Press-In Oil Drain Nipple with O-Ring – Fits All Year Dodge Cummins Upgrade your turbo oil drain setup with this 3/4" Aluminum Straight Nipple designed to press-fit directly into the OEM oil drain port on all model years of Dodge Cummins engines. This precision-machined...

🔥 3rd Gen Dodge Cummins Complete Intercooler Boot Kit – 7-Layer Silicone, 130 PSI Rated | Fits 2003–2009 5.9L & 6.7L Upgrade the reliability of your 3rd Gen Dodge Ram Cummins with this high-performance intercooler boot kit. Designed to handle extreme boost pressures and...

🛠️ 3/4" Preformed Turbo Oil Drain Line – Primary Turbo | Fits 2G, 3G, 4G Piping Kits This  3/4" Preformed Oil Drain Line is specifically designed for the primary (bottom) turbocharger in 2nd Gen, 3rd Gen, and 4th Gen Cummins twin/compound turbo piping kits. Pre-bent for proper routing...

🛠️ Silver Velcro Heat Shield – 18" Aluminum-Kevlar Sleeve for Turbo Area Wiring Protection Protect your wiring and hoses from extreme turbo heat with this Silver Velcro Heat Shield Sleeve. Constructed from durable aluminum and Kevlar®-lined material, this 18.00" pre-cut sleeve offers easy installation and premium...

🔥 2nd Gen Style Turbo Piping Kit – Fits 3rd & 4th Gen Dodge Cummins | Stainless Diesel Strength for S300/S400 Turbos Drastically lower your EGTs, improve drive pressure, and enhance spool-up by converting your 3rd or 4th Gen Cummins to a 2nd Gen-style...

🔥 Turbosmart BOV Controller Kit – Protect Your Turbo & Eliminate Compressor Surge (Diesel Application) The Turbosmart BOV Controller Kit is an advanced electronic solution designed specifically to prevent compressor surge in large turbo diesel engines. Engineered to manage high-boost systems, this BOV controller...

🔥 5 Blade Mafia Compound Turbo Kit – Complete T4 Over T6 Twin Turbo System for 03–07 5.9L Cummins Unleash the power potential of your 2003–2007 Dodge Ram 2500/3500 with Stainless Diesel’s Complete 5 Blade Mafia™ Compound Turbo Kit. Designed to dramatically lower EGTs...

🚀 Turbo Screen Guard with Velocity Stack – High-Flow Protection in Style Protect your turbo without sacrificing performance. Our Turbo Screen Guard with integrated Velocity Stack is engineered for maximum airflow while offering protection from large debris. Built for high-performance turbo and supercharger setups, this...

🔥 Complete Compound Twin Turbo Kit – 2003–2007 Dodge Ram 5.9L Cummins | 800+ HP Capable Unlock unmatched power, spool-up, and driveability with Stainless Diesel’s Complete Compound Turbo Kit for 2003–2007 5.9L Cummins. Designed for serious diesel enthusiasts, this setup drastically lowers EGTs, eliminates...