Reverse Rotation; V-Band GTX30 Turbine Hsg Kit; Ni-Resist 1.01 A/R. Garrett # 74090-0055

The Garrett Reverse Rotation V-Band GTX30 Turbine Housing Kit is engineered for builders running counter-clockwise spooling turbochargers who need precise exhaust-side control without compromising durability. Cast from Ni-Resist material and finished in a 1.01 A/R, this housing is purpose-built for tight engine bay layouts where conventional turbine housing orientation simply won’t work. It’s the right call for enthusiasts building a GTX30-based platform that demands optimized exhaust scavenging alongside fast, reliable boost response.

Specifications

• A/R Ratio: 1.01
• Material: Ni-Resist
• Flange Type: V-Band
• Rotation: Reverse Rotation (counter-clockwise spool direction)
• Application: GTX30 turbo applications
• Garrett P/N: 74090-0055
• Alternate P/N: 740902-55
• Alternate P/N: 740902-55S
• Alternate P/N: 740902-555
• Alternate P/N: 740902-5055
• Alternate P/N: 740902-5055S
• Alternate P/N: 740902-50555
• Alternate P/N: 740902-0055S
• Alternate P/N: 740902-00555

Performance & Application

This turbine housing is designed specifically for GTX30 turbo applications requiring reverse, counter-clockwise spool direction. The V-band design paired with the Ni-Resist 1.01 A/R construction supports performance builds that demand optimized exhaust scavenging and rapid boost response. It’s particularly suited to compact engine bay configurations where standard turbine housing orientation isn’t feasible.

Compatibility & Fitment

• Compatible with Garrett GTX30 turbo applications
• Fits Reverse Gen2 GTX3071R turbocharger platform

Frequently Asked Questions

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

This turbine housing features a 1.01 A/R ratio.

What material is the turbine housing made from?

It is constructed from nickel-resistant (Ni-Resist) material.

What flange type does this housing use?

This housing uses a V-band flange design.

Why would I need a reverse rotation turbine housing?

Reverse rotation housings are designed for applications requiring counter-clockwise spool direction, ideal for performance builds demanding optimized exhaust scavenging and rapid boost response in compact engine bay configurations.

For builders running a GTX30-based reverse rotation setup, this Ni-Resist V-band turbine housing delivers the exact spool direction and exhaust flow characteristics your compact engine bay build requires.