Garrett 740902-0124 GBC35-700 Turbine Housing Kit T4 Open / V-Band 0.82 A/R

Vehicle Fitment

• Universal -- compatible with GBC35-700 supercore (PN 913840-5001S)
• Engine displacement range: 2.0L-5.0L
• Target power range: 400-700 hp

Fitment Notes

• Turbine housing only -- supercore sold separately (PN 913840-5001S)
• T4 open (undivided) inlet -- not compatible with divided manifolds without adapter
• Outline interchangeable with GBC37-900 housing
• Standard (right-hand) rotation only
• Race/off-road use only -- not for street-registered vehicles

Features

• 0.82 A/R turbine housing
• T4 open (undivided) inlet flange
• 90mm V-band outlet
• Free float external wastegate provision
• Modern turbine wheel aerodynamics
• Standard rotation (right-hand)
• Garrett Boost Club (GBC) series

Specifications

• A/R ratio: 0.82
• Inlet flange: T4 open (undivided)
• Outlet: V-band, 90mm (3.5")
• Wastegate: Free float (external)
• Volute: Undivided (open)
• Rotation: Standard (right-hand)
• Compatible supercore: GBC35-700 (913840-5001S)
• GBC35-700 compressor inducer: 58mm
• GBC35-700 compressor exducer: 76mm
• GBC35-700 turbine inducer: 68mm
• GBC35-700 turbine exducer: 62mm
• GBC35-700 max airflow: 68 lbs/min
• GBC35-700 max pressure ratio: 4.1:1

Included Components

• 1x GBC35-700 turbine housing
• 1x V-band outlet clamp hardware

Product Description

The Garrett 740902-0124 is a 0.82 A/R turbine housing for the GBC35-700 (Boost Club Line) turbocharger platform, featuring a T4 open inlet flange and a 90mm (3.5") V-band outlet. The 0.82 A/R ratio provides a balance between spool response and top-end flow, making it well-suited for mid-to-high RPM power builds on 2.0L-5.0L engines targeting 400-700 hp. The open (undivided) T4 inlet is compatible with the vast majority of aftermarket T4 exhaust manifolds, while the V-band outlet simplifies downpipe connection and allows rotation for precise positioning.

This listing is for the turbine housing only. The compatible GBC35-700 supercore (PN 913840-5001S) is sold separately and features a 58mm GTX Gen II billet compressor wheel, 360-degree journal bearing thrust bearing, and oil-cooled center housing. The GBC35-700 housing outline is also interchangeable with the GBC37-900 supercore for a direct power-level upgrade without changing manifold or downpipe. For race and off-road use only.