This T04S-style compressor housing is purpose-built for enthusiasts upgrading or rebuilding a GT3071R or GT2871R turbocharger with a 71mm 56-trim wheel. It’s the ideal choice for builders seeking a direct-fit, polished housing that delivers both optimized airflow characteristics and a clean, finished appearance under the hood. Whether you’re assembling a fresh build or restoring an existing core, this housing offers the correct fitment and flow geometry demanded by serious performance applications.

Specifications

• Frame Style: T04S
• Compressor A/R Ratio: .70
• Compressor Wheel Compatibility: 71mm 56 trim
• Inlet Size: 4″
• Outlet Size: 2.5″
• Surge Feature: Bullet Drilled (Anti-Surge)
• Finish: Polished (Polished Option not shown in picture)
• Garrett P/N: 409722-0010

Performance & Application

Designed specifically for GT3071R and GT2871R turbochargers running the 71mm 56-trim compressor wheel, this housing is engineered to work with the .70 A/R configuration for a balance of response and flow. The anti-surge bullet drilling helps manage compressor surge characteristics, making this housing well-suited for builders who demand consistent boost delivery and improved reliability under varying load conditions. This housing is a strong fit for performance rebuilds and upgrades where matching the correct compressor housing to the 71mm 56-trim wheel is critical to turbo performance.

Compatibility & Fitment

• GT3071R
• GT2871R

Frequently Asked Questions

What compressor wheel size and trim does this housing fit?

This housing is designed for a 71mm 56-trim compressor wheel.

What is the A/R ratio of this compressor housing?

The compressor housing features a .70 A/R ratio.

What inlet and outlet sizes does this housing use?

This housing has a 4″ inlet and a 2.5″ outlet.

What turbochargers is this compressor housing compatible with?

This housing is applicable to GT3071R and GT2871R turbochargers.

For builders running a GT3071R or GT2871R with the 71mm 56-trim wheel, this T04S .70 A/R housing delivers the correct fitment, anti-surge design, and polished finish to complete a performance-focused turbo build.