S400SX4 S480 80mm Billet Turbocharger T4 Twin Scroll 1.25 A/R

Name: S400SX4 S480 80mm Billet Turbocharger T4 Twin Scroll 1.25 A/R
Brand: Detroit
SKU: 171702

The S400SX4 S480 with 1.25 A/R is a BorgWarner AirWerks performance turbocharger featuring an 80mm billet compressor wheel and T4 twin-scroll turbine housing. The 1.25 A/R is the balanced mid-range option in the S480 turbine housing lineup — it offers a blend of spool speed and top-end flow that works well for street/strip builds targeting 750-1100 HP. Same 80mm/117.5mm Extended Tip billet compressor as the 1.10 A/R and 1.32 A/R variants. Built new, dynamically balanced. We supply performance shops, builders, and distributors.

Turbo Model

S400SX4 S480 (BorgWarner AirWerks, 80mm billet, T4 twin-scroll, 1.25 A/R)

Specifications

Compressor: 80/117.5mm billet 7+7 blade Extended Tip | T4 twin-scroll inlet, 4.21” V-band outlet | 96/88mm turbine | 1.25 A/R | 750-1100 HP sweet spot

Application

Universal performance — Cummins, Detroit, Duramax, Power Stroke, custom builds

Service & Support

1-Year Warranty
US Stock, Fast Dispatch
Bulk Orders Welcome

Get a Quick Quote

Your Source for Quality Diesel Engine Parts

FAQ

The 1.25 A/R balances spool speed and top-end flow. The 1.10 A/R spools faster but caps top-end earlier. The 1.32 A/R flows more at peak but spools slower. For most street/strip builds targeting 750-1100 HP, the 1.25 A/R is the sweet spot.

Universal performance turbo — commonly used on Cummins 5.9L/6.7L, Detroit Series 60, Duramax, and Power Stroke in compound or single turbo setups.

Brand new, 80mm billet compressor wheel, dynamically balanced. One-year warranty.

Yes. US stock, volume pricing for performance shops and distributors.

S480 1.25 A/R: The Street/Strip Sweet Spot

The 1.25 A/R turbine housing is the most popular S480 configuration for street/strip diesel builds. It offers enough low-end spool to be driveable on the street while flowing enough exhaust to support serious power levels. If you are not sure which A/R to choose, the 1.25 is the safest bet for most builds.