Housing, Turbine, Garrett BB GTW38, T4 UNDIV .81 A/R, 3″ V-BAND EXIT

This Garrett GTW38 turbine housing is engineered for serious builders who demand precise turbo matching and reliable downpipe integration. Its ball bearing platform and T4 undivided inlet make it the ideal choice for high-performance applications where fast spool response and durable exhaust-side flow are non-negotiable. Paired with a V-band outlet for straightforward downpipe fitment, this housing is built for enthusiasts who take their turbo system seriously.

Specifications

• Turbine Housing Model: Garrett GTW38
• Bearing Type: Ball Bearing
• A/R Ratio: .81
• Turbine Inlet Flange: T4 Undivided
• Turbine Outlet: 3″ V-Band
• Flange and Clamp Set P/N: CLC-CLA-052

Performance & Application

Designed around the Garrett GTW38 ball bearing platform, this turbine housing delivers the fast spool response ball bearing turbos are known for, without sacrificing the flow characteristics needed for serious power. The T4 undivided inlet configuration and .81 A/R ratio make it a strong fit for builders seeking a balance of response and top-end flow on GTW38-based turbo systems. The 3″ V-band outlet simplifies downpipe integration on the exhaust side, making this housing well suited for performance builds that prioritize both spool characteristics and ease of installation.

What’s Included

• Flange and Clamp Set, V-Band Outlet (down-pipe side) — P/N: CLC-CLA-052

Frequently Asked Questions

Is this turbine housing ball bearing or journal bearing?

This is a ball bearing turbine housing, designed for the Garrett GTW38.

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

The A/R ratio is .81.

What turbine inlet flange does this housing use?

It uses a T4 undivided inlet flange configuration.

What type of outlet does this turbine housing have?

It features a 3″ V-band exit on the downpipe side, and includes a matching flange and clamp set (P/N: CLC-CLA-052) for secure fitment.

For builders running a Garrett GTW38 ball bearing turbo, this .81 A/R T4 undivided turbine housing with 3″ V-band exit delivers the exact spool characteristics and downpipe compatibility your build demands.