BD Diesel 1045172 Iron Horn Turbo Kit Cummins - S363SXE 5.9L 0.91AR

The BD Diesel Iron Horn turbo kit delivers a complete drop-in turbo upgrade solution for 2003-2007 Dodge RAM 2500/3500 trucks with the 5.9L Cummins engine. This kit replaces both your factory turbocharger and exhaust manifold with premium components engineered for increased performance and reliability.

Premium BorgWarner Technology:

At the heart of this kit is a BorgWarner S363SXE turbocharger featuring advanced SX-E cartridge technology. The S300-series turbo utilizes a T4 flange configuration and delivers significantly improved airflow over the stock turbo, resulting in increased power output, better throttle response, and lower exhaust gas temperatures. This particular configuration features a 0.91 A/R ratio for optimized boost response and drive pressure characteristics.

High-Flow Pulse Manifold:

The kit includes BD's engineered 2-piece pulse exhaust manifold designed specifically for the 5.9L Cummins. This T4-flanged manifold improves exhaust flow while reducing harmful drive pressures that can stress engine components. All necessary gaskets are included for a complete installation.

Performance Specifications:

• Compressor wheel: 61.44mm inducer to 69.00mm exducer
• Turbine wheel: 76mm diameter
• A/R ratio: 0.91
• Airflow capacity: 77-98 lb/min depending on configuration
• Power capability: Approximately 500-700 horsepower (varies by truck configuration)
• Estimated installation time: 6 hours

Drop-In Installation:

Unlike turbo upgrades requiring custom piping and fabrication, the Iron Horn kit is engineered to utilize your existing intake and exhaust components for a clean, straightforward installation. No additional piping is required—the turbo and manifold drop directly into place.

Important Installation Notes:

• 2003-2004 model year trucks (305HP output) with HY35 turbo require a 2004.5-2007 style aftermarket downpipe (such as Flo Pro 20811) and OEM V-band clamp (Part# 52121285AA)
• Aftermarket air intake kits may require modification for proper fitment
• Turbo-mounted exhaust brakes cannot be used with this kit; remote-mount exhaust brakes are compatible
• Not legal for sale or use on California-licensed vehicles

Warranty Coverage:

BD Diesel backs this kit with a 12-month/12,000-mile limited warranty on parts.

Emissions Compliance:

This product meets EPA reasonable basis requirements and is legal for sale and use within federal EPA jurisdiction (EMS:2).