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Exhaust Exhaust Pipes, Systems and Components

HSP

RFAB 5-Inch Inlet to 4-Inch Outlet Marmon Exhaust Flange

$75.00 $55.25 Save $19.75

SKU: RFB-135-RFAB

In Stock
In Stock
Ships by Aug 6
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The HSP RFB-135-RFAB is a steel exhaust flange designed with a Marmon style for T6 S400 turbochargers. This component facilitates an exhaust connection, transitioning from a 5-inch inlet size down to a 4-inch outlet. As part of HSP Diesel's extensive Rfab product line, this flange is intended for DIY enthusiasts and professional mechanics alike. The range includes various essential components such as bungs, boots, tubes, and fittings, all aimed at assisting users in completing their custom projects without unnecessary delays. Constructed from durable steel, this flange provides a robust solution for exhaust system modifications and turbocharger installations. Its specific T6 S400 turbo flange type and Marmon style connection ensure compatibility with corresponding turbocharger housings and exhaust systems.

MIA's Description

The HSP RFB-135-RFAB is a Marmon style exhaust flange made from steel. It features a 5-inch inlet that reduces to a 4-inch outlet and is designed for T6 S400 turbo applications.

This flange is part of the Rfab line of DIY parts offered by HSP Diesel, which includes bungs, boots, tubes, and fittings to help complete a project.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandHSP
Part NumberRFB-135-RFAB
CategoryExhaust

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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