BorgWarner 177209 S300SX Turbine Housing 1.00 A/R 76mm T4 Twin Scroll

The BorgWarner 177209 turbine housing is a genuine replacement exhaust housing designed for S300SX3 and S300SX-E series AirWerks turbochargers. This housing features a 1.00 A/R ratio with a 68mm inlet, optimized for high-flow applications where top-end performance is prioritized.

Key Specifications:

• Compatible with 76mm turbine wheel diameter
• T4 divided (twin scroll) inlet flange configuration
• 1.00 A/R ratio for maximum exhaust flow
• Fits S300SX3 turbochargers (177272, 177280, 177283) and S300SX-E models
• Durable cast iron construction for heat-cycle reliability

Performance Characteristics:

The 1.00 A/R configuration offers excellent top-end flow characteristics, making this housing ideal for high-horsepower single turbo setups or as a high-pressure charger in compound S300/S400 configurations. This housing allows you to change the A/R value or installation position of your turbocharger, providing flexibility for custom turbo builds and performance tuning.

Application Notes:

This is a turbine housing only and requires an existing S300 series turbocharger core assembly. The exhaust case comes original from BorgWarner, ensuring proper fit and OEM quality. Commonly used in diesel performance applications and high-output forced induction systems rated for 320-800 HP.