Housing, Turbine, GTW3684R, T3 undivided .63 A/R, Welded 3″ GT VB (81mm cent. ring) 90mm OD Flange

The Garrett GTW3684R turbine housing is engineered for builders who demand a robust, high-flow exhaust outlet solution on their GTW-series turbocharger. Designed for serious performance applications, this housing pairs Garrett’s proven T3 undivided architecture with a welded V-band outlet for simplified, leak-free downpipe integration. It’s the ideal choice for enthusiasts building high-horsepower setups that require dependable exhaust routing without compromising turbine efficiency.

Specifications

• Turbine Housing Configuration: T3 undivided
• A/R Ratio: .63
• Outlet Connection: Welded 3″ GT V-band
• Center Ring: 81mm
• Flange OD: 90mm
• Garrett P/N: GTW3684R

Performance & Application

This turbine housing is purpose-built for the GTW3684R turbocharger platform, targeting builders who need a T3 undivided inlet paired with a high-flow V-band outlet. The undivided design supports strong, consistent exhaust flow characteristics suited to high-horsepower builds requiring robust exhaust routing. The welded V-band outlet with its protruded lip design ensures a secure, precise downpipe connection, making this housing well suited for demanding performance applications where reliable turbo mounting is critical.

What’s Included

• Flange, 3″ GT V-Band w/ 81mm protruded lip (Stainless Steel) — Product Code: ATP-FLS-246
• Clamp, v-band downpipe side — Product Code: CLC-CLA-048

Frequently Asked Questions

What A/R ratio does the GTW3684R turbine housing use?

The GTW3684R turbine housing features a .63 A/R ratio.

Is the GTW3684R turbine housing divided or undivided?

This is a T3 undivided turbine housing.

What outlet connection does this tur