SWAG Performance offers a large selection of OEM and aftermarket parts for your 2003–2004 5.9L Cummins engines, including high-pressure fuel system upgrades, electronic tuners, and direct-fit 5.9L turbochargers. Featuring early common rail-specific components, this lineup supports transmission tuning for 47RE and 48RE platforms, plus bolt-on airflow upgrades ideal for towing or track applications.
Magnaflow Universal Converter 2.50inch C/C Met. 59956Ships to Continental US Only. MagnaFlow Conv Univ 2.50inch C/C Met. Not for sale or street use in CA & CARB states.
Magnaflow Conv Universal 2.50inch C/a 54976Ships to Continental US Only. MagnaFlow Converter Universal 2.50inch C/A.  Not for sale or street use in CA & CARB states.
Magnaflow 6" Dual Wall Angle Cut Exhaust Tip 5" In X 6" Out X 13" Long 35233Ships to Continental US Only. Magnaflow Tip (1-Pk) DWACRE 6.00 x 13 - 5.00in. ID
Magnaflow Federal Universal 4" Offset Catalytic Converter Universal 60121Ships to Continental US Only. The Magnaflow 60121 Federal Universal 4" Offset Catalytic Converter is specially designed for your diesel exhaust system. MagnaFlow...
Magnaflow Black Series Intercooled Angle Cut Exhaust Tip 4" In, 5" Out, 13" 35220Ships to Continental US Only. The Magnaflow 35220 5" Black Series Intercooled Angle Cut Exhaust Tip features a 100% stainless steel construction with a durable black...