BorgWarner .90 AR T4 S400 Exhaust Housing for 83MM Turbo

Features:

• .90 A/R T4 turbine housing
• Fits BorgWarner S400 83mm turbos
• Designed for high-flow performance
• Durable cast construction
• Optimized for quicker spool-up
• T4 flange for universal applications
• Direct replacement for BW part 177102
• Ideal for custom turbo setups
• Helps reduce backpressure and EGTs
  
• Supports high horsepower builds

Turbine Housing Upgrade by Industrial Injection

If you’re chasing quicker spool-up and more responsive boost from your S400 turbo setup, the BorgWarner .90 A/R T4 exhaust housing is a smart upgrade that delivers. Designed to fit 83mm S400 turbine wheels, this housing features a .90 A/R ratio that’s perfect for street-driven builds or towing applications where faster turbo response is key. Whether you're refreshing an existing turbo or dialing in a custom setup, this housing gives you the tighter exhaust side you need without sacrificing too much on the top end. Built from durable cast materials, this housing is engineered to withstand the heat and pressure that come with heavy throttle and long pulls. The T4 flange makes it a versatile option for a wide range of custom or performance diesel applications, and it's a direct fit for turbos using the BorgWarner 177102 spec.

Fits: Universal