BorgWarner - S400SX Turbine Housing 1.00 A/R T4 87 mm – 178788

BorgWarner part 178788 is a direct OEM-style twin-scroll turbine housing (1.00 A/R, T4 inlet) made of durable cast iron, engineered for high-flow performance setups requiring an 87 mm turbine cover.

Included

• Cast-iron twin-scroll turbine housing (1.00 A/R, T4 inlet, V-band outlet)

Key Features

• High-flow housing designed for 87 mm turbines
• Durable cast-iron construction, ideal for demanding applications
• Easy bolt-on replacement for S400SX series turbos

Fitment

Universal fitment across S400SX / S400SX-E turbo systems; commonly used in diesel performance upgrades—verify T4 inlet before purchasing.