If you are looking for an easy economical turbo upgrade, or, replace your tired turbo and aging exhaust manifold, then BD's Iron Horn series for your 3rd generation 5.9L Cummins offers a clean, drop-in installation. Featuring BorgWarner SX-E cartridges and 2-piece pulse exhaust manifold, BD's Iron Horn turbocharger kits are engineered to give optimal performance while reducing EGT's and high drive pressures. The Iron Horn is available in a number of configurations to match your performance level without compromising drivability.

• Increase airflow for more power, response, and reliability
• Replace your factory turbo with a S300 SX-E Borg Warner T4 flange turbo
• Kit includes a 5.9L 2-piece BD high flow pulse T4 manifold and gaskets
• No extra piping required, it drops in place for an easy, clean installation

TURBO SIZING

S363/76/.91 - Quickest spooling option for those wanting the closest spool up compared to stock. Great for bone stock trucks. Supports up to 550HP max.

S364/80/.91 - This is going to be perfect for those who want stock like turbo spool and have minimal modifications to the truck. Ideal for those with the basics. Supports up to 600HP with proper supporting modifications. This is what we suggest if your truck is tuned and you do not plan on larger injectors. The .91 exhaust housing will help with quicker spool but does sacrifice a bit of top end flow. For the 5.9L the .91 tends to provide the best overall performance. 

S364/80/1.00 - This turbo is usually a better option for the 6.7L Cummins guys with aggressive tuning and other basic mods. For the 5.9L guys we suggest the .91. The 1.0 exhaust housing will have slightly slower spool than the .91 but will have more top end flow resulting in lower EGTs. Supports 600HP. 

S366/80/.91 - Great option for a hot street setup. This turbo will react very similar to the 364 with just slightly slower spool time. Flows enough air to support 650HP. Works with stock injectors but ideally 15-30% overs. 

S366/80/1.00 - Difference here is the 1.0 exhaust housing. It will flow slightly more on the top end resulting in lower egt while only sacrificing spool time ever so slightly compared to the .91.

S369/80/1.00 - This turbo will be lazy on stock fueling but if you have a good tuner they should be able to dial it in to be tolerable. Supports up to 700HP with proper modifications. We suggest 30% or 60% over injectors to pair with it. 

• 6 Hours

• 12-Months
• 12,000 Miles

• 2003 to 2004 model year (305HP output) Dodge Ram 2500/3500 with HY35 turbocharger will require a 2004.5-2007 style aftermarket downpipe such as Flo Pro part number 20811 and OEM V-band Part# 52121285AA
• Aftermarket air intake kits may need alteration
• Not for sale on licensed California vehicles
• Turbo mount exhaust brake cannot be installed with this kit - use remote mount exhaust brake

• This product has met EPA's reasonable basis requirements and is legal for sale and use within the jurisdiction of the federal EPA. (EMS:2)