What type of turbochargers is this flange designed for?

This flange is specifically designed to work with turbochargers that use GT28, GT30, and GT35 turbine housings. It adapts the common 4-bolt pattern found on these housings to a 3-inch V-band connection.

What material is this flange made from and why is it important?

The flange is constructed from 304 stainless steel. This material is chosen for its excellent corrosion resistance and ability to withstand the high temperatures found in turbocharger exhaust systems, making it a durable choice for custom fabrication.

What are the dimensions of this transition flange?

The flange has a 3-inch round inlet and transitions to a 3-inch V-band outlet. It features a flange outer diameter of 96.9mm and a thickness of 1.6mm.

Vibrant 4 Bolt Flange 3in Round to 3in V-Band Transition

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Specifications

Brand: Vibrant
Part #: 11739S
UPC: 690092156329

Vibrant 4 Bolt Flange 3in Round to 3in V-Band Transition

Name: Vibrant 4 Bolt Flange 3in Round to 3in V-Band Transition
Brand: Vibrant
Price: 59.99 USD
Availability: InStock

$59.99

On Backorder — Expected to ship by Apr 5, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Vibrant 4 Bolt Flange 3in Round to 3in V-Band Transition. Made from 304 stainless steel for custom turbo setups.

Key Features

Fits GT28, GT30, and GT35 turbine housings.
Constructed from durable 304 stainless steel.
Transitions from a 4-bolt pattern to a 3-inch V-band connection.
Laser-cut for a precise fit in custom fabrication projects.
Features a 3-inch round inlet and a 3-inch V-band outlet.
Includes a 1-year limited warranty.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This Vibrant Performance transition flange is made from 304 stainless steel, a solid choice for custom exhaust fabrication. It's designed to connect a 4-bolt turbocharger housing, specifically those used with GT28, GT30, and GT35 turbine housings, to a 3-inch V-band exhaust system. The flange measures 3 inches from its round inlet to its V-band outlet, offering a clean transition for your turbo plumbing.

The laser-cut construction ensures a precise fit, which is crucial when you're building a custom turbo system. This piece is built to handle the heat and pressures common in turbo applications, thanks to the corrosion resistance of 304 stainless steel. It's a well-built component that simplifies the process of adapting a common 4-bolt turbo outlet to a V-band clamp setup, often used for easier installation and removal of exhaust components.