🔥 T4 S400 1.00 A/R Divided Turbo Exhaust Housing – For 83mm Turbine Wheel (Twin Scroll, 4 5⁄8" Outlet)

Upgrade your S400 turbo setup with this T4 1.00 A/R Divided Exhaust Housing, engineered for use with 83mm turbine wheels and designed to optimize flow, drive pressure balance, and turbo spool characteristics. Featuring a true twin-scroll volute design and a T4 divided inlet flange, this turbine housing delivers serious performance for street, towing, and race applications.

With a 4 5⁄8" (4.62") machined outlet flange, this housing pairs with standard S400 downpipes and is ideal for high-performance Cummins, Duramax, and Powerstroke builds running BorgWarner S400-based turbos.

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🔧 Key Features:

• Fits BorgWarner S400 turbos with 83mm turbine wheels

• 1.00 A/R for strong mid-to-top-end power with responsive spool

• T4 divided (twin-scroll) inlet flange for pulse-split exhaust flow

• 4 5⁄8" machined outlet flange – standard S400 sizing

• Twin volute design improves boost response and lowers drive pressure

• Cast iron construction for high-heat reliability

• Compatible with most S475, S478, S480 turbo setups

• Perfect for single or compound turbo applications

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📦 What’s Included:

• 1x T4 Divided S400 Exhaust Housing (1.00 A/R, 83mm turbine fitment)

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Whether you’re chasing ETs at the track or building a balanced street/strip setup, this exhaust housing provides the flow and fitment needed to get the most out of your S400 turbocharger.

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