S400 Turbocharger (163259)

S400 Turbocharger (163259)BorgWarner's S400 series is the proven heavy haul, sled pull, and street strip turbo platform and this is the Wehrli spec drop in. Built on a T4 turbine flange, S400 chargers handle big airflow across 5. 9L 6. 7L Cummins, 6. 6L Duramax, and 6. 0L 6. 4L 6. 7L Powerstroke applications, whether running single or as the upper stage of a compound kit. Pick the wheel that matches your goal cast for value, forged milled (FMW) and SX E for higher RPM and

BorgWarner's S400 series is the proven heavy-haul, sled-pull, and street-strip turbo platform — and this is the Wehrli-spec drop-in. Built on a T4 turbine flange, S400 chargers handle big airflow across 5.9L/6.7L Cummins, 6.6L Duramax, and 6.0L/6.4L/6.7L Powerstroke applications, whether running single or as the upper stage of a compound kit. Pick the wheel that matches your goal — cast for value, forged-milled (FMW) and SX-E for higher RPM and faster spool.

Features

• Genuine BorgWarner S400-series turbocharger
• T4 turbine housing flange — works with most aftermarket S400 exhaust manifolds and compound kits
• Three wheel options: cast, forged-milled (FMW), and SX-E Extended Tip Technology
• .90 A/R turbine housing on cast and FMW configurations
• SX-E billet wheel configuration adds a race cover and 87mm turbine for maximum airflow

Configurations

• S463.5 Cast Wheel T4 .90 A/R (163259) — 63.5mm compressor / 83mm turbine, cast compressor wheel
• S467.7 FMW T4 .90 A/R (167259M) — 67.7mm compressor / 83mm turbine, forged-milled compressor wheel
• S472 SXE FMW 87 Turbine (14009097006) — 72mm compressor / 87mm turbine, forged-milled wheel with Extended Tip Technology and SX-E race cover

Specifications

• Manufacturer: BorgWarner (sold and supported through Wehrli Custom Fabrication)
• Series: S400-SX / S400-SX-E
• Turbine flange: T4
• Compressor wheel: 63.5mm, 67.7mm, or 72mm (varies by configuration)
• Turbine wheel: 83mm or 87mm (varies by configuration)
• A/R ratio: .90 (cast and FMW configurations)
• Compatible platforms: 5.9L/6.7L Cummins, 6.6L Duramax, 6.0L/6.4L/6.7L Powerstroke (with appropriate adapter or install kit)
• Approximate weight: 42 lbs

Manufacturer Description

Wehrli Custom Fabrication sells BorgWarner S400-series turbochargers in a range of compressor and turbine wheel combinations to support everything from a stout daily-driver diesel to dedicated truck-pull and drag-race builds. Cast wheels deliver excellent value and durability for general performance use; forged-milled (FMW) compressor wheels reduce rotational mass for faster spool and a higher RPM ceiling; SX-E configurations add Extended Tip Technology and a race-pattern compressor cover for the most aggressive applications. The T4 turbine flange is the industry-standard mounting pattern for S400-pattern install kits, exhaust manifolds, and compound systems available across the Cummins, Duramax, and Powerstroke aftermarket.