Garrett G42 Turbine Housing Kit – T4 Divided (Twin-Scroll) Inlet | V-Band Outlet | 1.01 A/R | 757707-0014

Garrett G42 turbine housing kit in the T4 divided (twin-scroll) / V-Band / 1.01 A/R configuration. Part of Garrett’s G-Series — the G42 is a high-power turbocharger platform rated for approximately 700–900 whp depending on configuration, engine, and supporting hardware. This housing kit allows builders to configure a G42 core with a specific turbine housing spec to match their application. 23.5 lbs.

Configuration Breakdown

• T4 Divided (Twin-Scroll) Inlet: The turbine inlet uses a T4 flange in divided/twin-scroll configuration. Twin-scroll separates the exhaust manifold into two channels feeding alternating cylinder pairs — reduces turbulence between exhaust pulses, preserves pulse energy, improves spool response, and increases turbine efficiency compared to a single-scroll design. Requires a divided twin-scroll exhaust manifold with a divided T4 outlet flange. Will not seal or function correctly with a standard open (non-divided) T4 manifold
• V-Band Outlet: The turbine outlet (to the downpipe) uses a V-Band clamp connection. V-Band is easier to install and remove than bolted flanges and maintains a better seal under the thermal cycling of turbocharged applications. Requires a matching V-Band downpipe inlet flange
• 1.01 A/R: The A/R (Area/Radius) ratio of the turbine housing determines the relationship between turbine housing flow capacity and spool characteristics. At 1.01 A/R, this is a mid-to-large housing for the G42 — prioritises peak flow capacity and top-end power over early spool. Compared to a smaller A/R (e.g. 0.85), the 1.01 will build boost later in the RPM range but support higher peak power levels. Appropriate for high-power builds targeting upper RPM performance rather than low-RPM response

G42 Platform

The Garrett G42 is a G-Series compressor-wheel turbo rated for approximately 700–900 whp depending on boost pressure, engine displacement, and supporting hardware. The G-Series uses Garrett’s advanced aerodynamic compressor and turbine wheel designs developed from motorsport applications. The G42 is positioned for serious street, track, and time attack builds where high power targets require a capable turbo platform.

What’s Included

• Garrett G42 turbine housing
• Associated mounting hardware (kit contents — verify with Garrett part listing)

Turbine housing only — not a complete turbocharger. Divided T4 inlet — requires a divided twin-scroll T4 exhaust manifold. V-Band outlet — requires a matching V-Band downpipe inlet. Confirm all mating components (manifold flange, downpipe V-Band, oil/coolant lines) are compatible with your build before ordering. Professional fabrication and installation experience required. Proper oil supply and return lines are critical for turbocharger longevity.

Specifications

• Brand: Garrett
• Part Number: 757707-0014
• Platform: G42 (G-Series)
• Component: Turbine housing kit
• Turbine Inlet: T4 divided (twin-scroll)
• Turbine Outlet: V-Band
• A/R: 1.01
• Power Range: ~700–900 whp (G42 platform)
• Weight: 23.5 lbs
• Fitment: Universal — G42 turbo builds with divided T4 manifold and V-Band downpipe