CR Performance Billet Flank Milled Upgrade Compressor Wheels for the BorgWarner S400 S475 Series Turbocharger   Application: BorgWarner S400 S475 101mm 54 Trim   Turbo Model: BorgWarner S400 S475 101mm 54 Trim OE CW P/N: 171691 Blades: 6 6 Inducer: 74.53mm Exducer: Base 101.4mm Extended Tip 109.1mm Blade Height: 46.4mm Bore: 10mm Threaded-M10x1.5LHT Mass: 242g   Interchange Part Number: OE CW P/N: 171691, 171702(S400SX4-75), 176806(S400SX4-75), 179174(S400SX-75)     These Compressor wheels offer the following advanced features. Modern Extended Tip Technology – Increasing capable boost pressures and increasing surge margin, therefore reducing surge. Provides improved throttle response and a boost increase at equivalent turbo RPM. High Flow Design – Slim hub/nose design and advanced blade design provides a higher flow at compressor choke and through the entire operating range. Higher blade heights give proven higher performance. Fast Spool Times – Weighing in at 242 grams these compressor wheels are ready to spool fast. Stock Housing Fitment – No compressor housing modifications required. Higher Performance Modern Design – Out performs stock with a larger extended tip exducer and higher blade height over stock. All our compressor wheels are single plane balanced right out of the box however we recommend a full rotating assembly balancing, please have your installer balance the assembly or contact us as we offer a full balancing service if you send us your turbine.   Please read our policy before you make a purchase. By purchasing this item you agree with our policy noted on our FAQ page