Garrett Turbine housing Kit, G Series G40, .85 A/R, T4 divided entry, v-band exit, P/N: 757707-0032

The Garrett G40 Turbine Housing Kit with a .85 A/R divided T4 entry and v-band exit is built for enthusiasts and shops constructing a complete G-Series turbo system who need a precise, bolt-together exhaust-side solution. Designed around the G-SERIES II G40 platform, this kit delivers the hardware needed to properly mate the turbine housing to a T4 divided manifold and downpipe. It’s the right choice for builders who demand Garrett-engineered flow characteristics paired with quality-matched flange and clamp components.

Specifications

• A/R Ratio: .85
• Turbine Inlet: T4 divided entry
• Turbine Outlet: V-band exit
• Garrett P/N: 757707-0032
• Included Component — T4 Turbine Inlet Flange, Divided, Stainless: ATP-FLS-057 (Mild steel option available)
• Included Component — Gasket, T4 (T04) Turbine Inlet, Divided: ATP-GSK-014
• Included Component — V-Band Outlet Flange (for Downpipe): ATP-FLS-378
• Included Component — V-Band Outlet Clamp: CLC-CLA-294

Performance & Application

This turbine housing kit is part of the Garrett G-SERIES II G40 lineup, engineered to work within a complete G40 turbocharger build. The .85 A/R divided T4 configuration is suited to builds where balanced mid-range spool and efficient exhaust flow are priorities. The divided entry design supports proper pulse separation from a T4 divided manifold, while the v-band exit simplifies downpipe integration. This kit is intended for enthusiasts assembling or upgrading a G40-based turbo system who require correctly matched turbine-side hardware.

What’s Included

• T4 Turbine Inlet Flange, Divided, Stainless (Mild steel option): ATP-FLS-057
• Gasket, T4 (T04) Turbine Inlet, Divided: ATP-GSK-014
• V-Band Outlet Flange (for Downpipe): ATP-FLS-378
• V-Band Outlet Clamp: CLC-CLA-294

Frequently Asked Questions

What is the A/R ratio of this G40 turbine housing kit?

This kit uses a .85 A/R turbine housing.

What type of turbine inlet does this kit use?

It uses a T4 divided entry, matched with a divided T4 (T04) turbine inlet gasket, P/N ATP-GSK-014.

What type of turbine outlet does this kit use?

The kit features a v-band exit, paired with a v-band outlet flange (P/N ATP-FLS-378) for downpipe connection and a v-band outlet clamp (P/N CLC-CLA-294).

Is a material option available for the turbine inlet flange?

Yes, the stainless T4 turbine inlet flange (ATP-FLS-057) is available with a mild steel option.

For builders assembling a Garrett G40 turbo system, this turbine housing kit delivers the exact .85 A/R divided T4 configuration and matched hardware needed for a correct, high-flow installation.

Downloads

• Garrett Performance G Series G40 Sell Sheet