US Perfect Auto Parts & Supplies Inc.
S488 88mm billet turbo T6 twin scroll

S488 88mm Billet Turbocharger T6 Twin Scroll 1.32 A/R Race Cover

The S488 (S400SX4 frame, 171702 family) with 88mm billet compressor wheel, T6 twin-scroll 1.32 A/R turbine housing, and race cover is the biggest configuration in our S400 performance lineup. Built for high-horsepower diesel applications — big-single Cummins builds, compound setups, tractor pulls, and drag trucks where airflow is everything. The T6 flange and 1.32 A/R housing are sized for sustained high-RPM exhaust volume. Built new, dynamically balanced. We supply performance diesel shops and distributors.

Turbo Model

S488 / S400SX4 (88mm billet, T6 twin scroll, 1.32 A/R, race cover)

OEM / Interchange Numbers

171702

Application

High-horsepower diesel performance — big singles, compound primaries, pulling and drag builds

Service & Support

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

High-horsepower diesel performance: big-single Cummins builds, compound primaries, pulling trucks, and drag applications that need maximum S400-frame airflow.

The 1.25 T4 uses a T4 flange and tighter 1.25 A/R for quicker spool. This 1.32 T6 trades response for top-end flow and uses the larger T6 flange.

The 1.32 A/R is sized for high-RPM airflow — on a mild street truck it will feel lazy. For street manners, choose the S480 1.25 T4 instead.

Brand new, 88mm billet wheel, dynamically balanced. No core charge. One-year warranty.

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

S488 1.32 T6: The Top of the S400 Lineup

Our S400 performance family runs from the S480 street-strip units up to this S488 1.32 T6 — the maximum-airflow configuration. Pick by power target and flange:

Complete S400 performance lineup

TurboCompressorTurbine
S480 1.10 T480mm billetT4 twin scroll 1.10
S480 1.25 T480mm billetT4 twin scroll 1.25
S480 1.32 T680mm billetT6 twin scroll 1.32
S488 1.25 T488mm billetT4 twin scroll 1.25
S488 1.32 T6 (this page)88mm billetT6 twin scroll 1.32

Why 88mm + T6 1.32

  • 88mm billet wheel — maximum airflow in the S400 frame; supports four-digit horsepower as a big single or compound atmosphere charger.
  • T6 twin scroll — the large flange keeps exhaust velocity organized on high-flow manifolds.
  • 1.32 A/R — sized for top-end; expect later spool, pair with proper fueling or a compound HP charger.
  • Race cover — compressor cover profile for high-flow intake plumbing.

Installation

  • T6 flange — verify manifold/hot-pipe flange match.
  • Run an oil restrictor per feed pressure; ensure a straight gravity drain.
  • Prime before startup; set boost control before hard pulls.

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