BORGWARNER 177281 S300SX3 TURBOCHARGER – S366/74, .88 A/R, T4 HOUSING

Product Description

borgwarner 177281, s300sx3, s366, 66mm compressor, 74mm turbine, .88 a/r, t4 housing, airwerks, journal bearing, cpp diesel, cummins, power stroke, duramax, compound turbos, s300 s400 Upgrade your build with the BORGWARNER 177281 S300SX3 (S366/74) featuring a .88 A/R T4 turbine housing and proven AirWerks journal-bearing durability. This universal T4 charger is a favorite for responsive street/strip singles and as the high-pressure unit in S300/S400 compounds. Verify manifold, downpipe, and oil line compatibility for your platform.

Fitment & Use

• Universal T4 mount (not vehicle-specific). Commonly used on 5.9L/6.7L Cummins with T4 manifold adapters, and in custom Power Stroke/Duramax builds. Confirm flange, outlet, oil feed/return, and charge piping before purchase. 

Cross-Reference / Similar BORGWARNER Options (CPP Links Only)

• BORGWARNER 177275 S300SX3 – S366/74, 0.91 A/R, T4
• BORGWARNER 177284 S300SX3 – S366/74, .91 A/R, T4
• BORGWARNER 177283 S300SX3 – S363/68, .88 A/R, T4
• BORGWARNER 177280 S300SX3 – S360/68, 0.88 A/R, T4
• BORGWARNER 177272 S300SX3 – S360/68, 0.91 A/R, T4

Why CPP Diesel

Real-world turbo matching help, fast shipping, careful packaging, and support from diesel pros. 

FAQ

Is 177281 a direct bolt-on?
No—this is a universal T4 turbo. You’ll need a T4 manifold, compatible downpipe/outlet, and proper oil feed/return and charge piping. 

Street friendly as a single?
Yes when properly fueled and matched; quicker response than many T6 S400 singles with strong mid/top power. For tow-heavy needs, consider smaller S300s or compounds. 

What are the basic wheel sizes?
Approx. 66mm compressor inducer, ~91.4mm exducer; turbine ~80mm inducer / ~73mm exducer (AirWerks S300SX3 family). 

Do I need an oil restrictor?
Typically no for journal-bearing AirWerks when feed/return are set up correctly. Prime before first start. 

Specifications for BORG WARNER 177281