S480 80mm Billet Turbo T4 1.10 A/R | BorgWarner S400SX4 | New

Name: S400SX4 S480 80mm Billet Turbocharger T4 Twin Scroll 1.10 A/R
Brand: Detroit
SKU: 171702

S400SX4 S480 80mm Billet Turbocharger T4 Twin Scroll 1.10 A/R

The S400SX4 S480 is a BorgWarner AirWerks performance turbocharger with an 80mm billet compressor wheel, designed for 550-1250 HP applications. This configuration features a T4 twin-scroll turbine housing with 1.10 A/R — the tightest A/R ratio in the S480 lineup for maximum low-end spool and fastest boost response. The S480 is a universal performance turbo used in high-HP builds on Cummins 5.9L/6.7L, Detroit Series 60, Duramax, Power Stroke, and other diesel and gasoline platforms. Built new, dynamically balanced. We supply performance shops, builders, and distributors.

Turbo Model

S400SX4 S480 (BorgWarner AirWerks, 80mm billet, T4 twin-scroll, 1.10 A/R)

Specifications

Compressor: 80/117.5mm billet 7+7 blade Extended Tip | T4 twin-scroll inlet, 4.21” V-band outlet | 1.10 A/R | 550-1250 HP

Application

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

Service & Support

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

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FAQ

The A/R (area-to-radius) ratio controls how fast the turbine spools and how much exhaust it can flow. 1.10 spools fastest but caps top-end flow. 1.25 balances spool and top-end. 1.32 flows the most but spools slowest. Choose based on your build goals.

The S480 is a universal performance turbo. It is commonly used on Cummins 5.9L/6.7L, Detroit Series 60, Duramax, Power Stroke, and other high-HP diesel and gasoline builds. Not engine-specific — requires custom mounting for most applications.

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

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

S480 1.10 A/R: Fastest Spool in the S480 Lineup

The 1.10 A/R turbine housing is the tightest option for the S480. It spools the fastest but caps top-end flow earlier than the 1.25 and 1.32 A/R options. This configuration is ideal for street/strip builds where quick boost response matters more than peak top-end power.

S480 A/R comparison

A/R	Inlet	Character
1.10 (this page)	T4 twin-scroll	Fastest spool, best low-end response
1.25	T4 twin-scroll	Balanced spool and top-end
1.32	T6 twin-scroll	Maximum top-end flow, slower spool

Choose A/R based on your target power range and how quickly you need boost. Lower A/R = faster spool. Higher A/R = more top-end.