BD Diesel 1045984 T3 T4 Turbo Mounting Kit 1994-2007 Dodge Ram 5.9L Cummins S300

Vehicle Fitment

• 1994-2002 Dodge Ram 2500 (5.9L 12V & 24V Cummins, equipped with HX / HY / S300 / S400 T3 or T4 flange turbo)
• 1994-2002 Dodge Ram 3500 (5.9L 12V & 24V Cummins, equipped with HX / HY / S300 / S400 T3 or T4 flange turbo)
• 2003-2007 Dodge Ram 2500 (5.9L 24V Cummins, equipped with HX / HY / S300 / S400 T3 or T4 flange turbo) - ST, SLT, Laramie, Sport, TRX4
• 2003-2007 Dodge Ram 3500 (5.9L 24V Cummins, equipped with HX / HY / S300 / S400 T3 or T4 flange turbo) - ST, SLT, Laramie, Sport

Fitment Notes

• For use with HX-series (Holset), HY-series (Holset), BorgWarner S300, and BorgWarner S400 turbochargers using T3 or T4 inlet flanges only
• Not intended for use with the OEM stock HX35 / HX40 turbos running their factory T3 flange without modification - verify your turbo's inlet flange type before ordering
• For the 2007.5-2018 Dodge 6.7L Cummins HE351/HE300VG turbo mounting hardware, see BD Diesel 1045983
• All fasteners are a minimum of Class 8.8 strength rating

Features

• Complete hardware kit for T3 and T4 turbocharger installation or reinstallation on 1994-2007 5.9L Cummins engines
• Replaces aged or weakened OEM studs, nuts, and gaskets prone to breakage from heat cycling and removal torque
• Includes both T3 and T4 inlet gaskets (split and open configurations), covering a wide range of aftermarket turbo fitments
• Oil drain gasket included for a complete, leak-free installation
• All fasteners are minimum Class 8.8 - higher strength than typical OEM hardware
• Stainless steel socket head cap screws for added corrosion resistance at critical oil drain mounting points

Specifications

• Part Number: 1045984
• Product Type: Turbocharger Mounting Hardware & Gasket Kit
• Compatible Turbo Flange Types: T3 and T4
• Compatible Turbo Models: HX-series, HY-series (Holset); S300, S400 (BorgWarner)
• Fastener Grade: Class 8.8 minimum
• Stainless Steel Components: M10 x 45mm Socket Head Cap Screws
• Warranty: 90 Days

Included Components

• 4x M10 Small Diameter Flange Nuts
• 4x M10 x 26mm Studs
• 4x M10 x 30mm Studs
• 2x M10 Washers
• 2x M10 x 45mm Stainless Steel Socket Head Cap Screws
• 1x T3 Split Inlet Gasket
• 1x T3 Open Inlet Gasket
• 1x T4 Split Inlet Gasket
• 1x Oil Drain Gasket

Product Description

The BD Diesel 1045984 is a complete turbocharger mounting hardware and gasket kit designed for 1994-2007 Dodge Ram 2500 and 3500 trucks equipped with a 5.9L Cummins and a T3 or T4 flange turbocharger - including HX-series, HY-series, BorgWarner S300, and S400 style units. Whether you're performing a factory turbo reinstall, upgrading to a larger aftermarket turbocharger, or replacing hardware that has fatigued from years of heat cycling and repeated removal, this kit provides everything needed in a single purchase.

The kit covers both T3 and T4 inlet gasket configurations - split and open - making it versatile across a wide range of second- and third-generation Cummins turbo swap applications. An oil drain gasket is included for a complete, sealed installation. All fasteners are rated to Class 8.8 or higher, and the critical oil drain mounting points use stainless steel socket head cap screws for added corrosion resistance. Replacing aging OEM studs and gaskets with fresh hardware during any turbo service is a best practice that prevents exhaust leaks and stud breakage on the next removal.