BorgWarner 1.0 A/R T4 Turbine Housing for S400SXS

Features:

• Fits BorgWarner S400SX3 turbochargers
• 1.00 A/R for balanced spool and flow
• T4 inlet flange for easy mounting
• Twin scroll design for improved efficiency
• Built for 87.37mm turbine wheel
• Ideal for custom turbo applications
• Supports strong mid-range and top-end power
• Durable cast construction for high heat use

Heavy-Duty Turbine Housing by Industrial Injection

If you're dialing in a custom turbo setup and want to fine-tune how your S400SX3 performs, the Industrial 178788 BorgWarner 1.0 A/R T4 Turbine Housing is a smart, performance-focused upgrade that brings balance to the table. Whether you're building for street, towing, or weekend pulls, this housing helps deliver quicker spool-up without choking top-end flow, ideal for drivers who want responsive power without sacrificing capability. With a 1.00 A/R and twin-scroll volute design, it’s built to take full advantage of the 87.37mm turbine wheel, optimizing exhaust pulse energy and improving turbine efficiency. That means better throttle response, smoother mid-range acceleration, and consistent high-RPM performance, especially in compound or large single setups. The T4 flange makes for a straightforward install in a wide range of builds, giving you flexibility and compatibility with common manifold designs.

Fits: Universal

Notes:

• Fits BorgWarner S400SX3 turbochargers
• 1.00 A/R offers balance of spool and flow
• T4 inlet flange provides easy manifold fitment
• Twin scroll design improves exhaust pulse efficiency
• Designed for 87.37mm turbine wheel compatibility
• Ideal for custom single or compound turbo builds
• Supports quick spool with strong top-end power
• Cast from high-temperature durable materials
• Universal fitment across wide performance platforms
• Commonly used in towing, racing, and street builds
• Allows fine-tuning of S400 turbo response
• Backed by Industrial Injection performance expertise