🔥 T4 .91 A/R Divided S300 Turbo Exhaust Housing – Fits SX-E 74mm x 80mm Turbine Wheel (Twin Scroll)

Maximize your turbo’s performance with this high-flow T4 .91 A/R Divided Exhaust Housing, designed for the BorgWarner S300 SX-E turbo series with a 74mm x 80mm turbine wheel. This volute-style twin-scroll turbine housing delivers excellent spool characteristics and exhaust flow for high-performance diesel and gas applications.

Featuring a T4 twin-scroll inlet flange and a S300 Marmon-style outlet, this housing is ideal for street, towing, and competition setups where throttle response, drive pressure balance, and durability matter.

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🔧 Key Features:

• Fits BorgWarner S300 SX-E 74mm x 80mm turbine wheels

• .91 A/R ratio – excellent balance of spool and top-end power

• Twin-scroll divided volute for improved exhaust pulse separation

• T4 inlet flange – standard divided configuration

• S300 Marmon-style exhaust outlet

• High-flow design for improved drive pressure and performance

• Part Number: 177208

• Ideal for Cummins, Duramax, and Powerstroke builds with S300 frame turbos

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📦 What’s Included:

• 1x T4 .91 A/R Divided S300 Turbo Exhaust Housing

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Whether you're upgrading a street truck or building a race-ready compound setup, this turbine housing provides the flow and fitment you need to get the most out of your S300 SX-E turbo.