Does the V-band G42 Turbine Housing Kit suit a single-scroll manifold?

Yes. This G42 Turbine Housing Kit has an undivided V-band inlet, which matches a single-entry manifold with a V-band collector. Builds on a divided twin-scroll manifold should use the T4 inlet version, offered by Garrett in the same 1.01, 1.15 and 1.28 A/R sizes.

Will the compact G42 cores fit this housing?

Yes. The compact cores change the compressor housing, not the turbine side. Garrett lists this housing for the G42-1200 Compact, 860778-5002S, and the G-Series II G42-1325C, 938339-5001S, as well as the versions with full-size compressor housings. The turbine wheel and center section dimensions are the same, so the turbine housing does not change.

How does the 1.01 A/R affect response?

It is the most responsive G42 size. The small passage accelerates exhaust into the turbine wheel, so boost comes in sooner than with the 1.15 or 1.28. The cost is higher backpressure near redline, which matters most on large engines running the bigger cores.

What turbine wheel is inside the matching cores?

All nine cores Garrett lists for this housing use a turbine wheel with an 82mm inducer and a 75mm exducer, which is why one housing fits the G42, G-Series II G42 and GXR42 families. Garrett describes the G42 turbine wheel aero as new, for higher efficiency and flow.

Do I need a wastegate with this housing?

Yes, an external one. Garrett lists the housing as free float, so there is no internal wastegate passage. The exhaust manifold must carry a wastegate flange ahead of the turbine, and the gate is sold separately and should be sized for the boost target of the engine.

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Description

Garrett G42 Turbine Housing Kit, 1.01 A/R V-Band Inlet and Outlet

Garrett’s G42 Turbine Housing Kit in the 1.01 A/R V-band version gives a single-scroll G42 build its quickest-spooling exhaust side, with clamped V-band joints at the inlet and outlet, stainless steel construction and no internal wastegate. It accepts all nine cores Garrett lists for the frame, including the compact G42-1200 and G42-1325C. A fabricated single-entry manifold on an engine under about 4.0L is a good home for it. Builders using a 79mm-compressor core on a big V8 will usually find the 1.15 or 1.28 A/R a better match.

Features

V-band inlet and outlet, clockable during mock-up
External wastegate layout with no flapper in the housing
Smallest V-band size in the G42 Turbine Housing Kit range

Specifications

Garrett part number: 757707-0011
A/R: 1.01
Turbine inlet and outlet: V-band and V-band
Divided inlet: No
Wastegate: External (free float)
Material: Stainless steel
Matching turbine wheel: 82mm inducer and 75mm exducer

Applications

Garrett lists this G42 Turbine Housing Kit for these cores:

Garrett G42-1200: 860778-5004S super core, full-size compressor housing
Garrett G42-1200 Compact: 860778-5002S super core
Garrett G42-1325 G-Series II: 938339-5002S super core, 938338-5002S CHRA
Garrett G42-1325C Compact G-Series II: 938339-5001S super core, 938338-5001S CHRA
Garrett G42-1450: 860778-5006S super core
Garrett G42-1585 G-Series II: 938339-5003S super core, 938338-5003S CHRA
Garrett GXR42-68 G-XRace: 934173-5001S super core
Garrett GXR42-71 G-XRace: 952766-5006S super core
Garrett GXR42-72 G-XRace: 934173-5002S super core

Notes

An external wastegate is required, because this housing has no internal wastegate
The G42 or GXR42 super core is sold separately
Garrett publishes a maximum turbocharger speed for each core, from 109,000 rpm on the GXR42-68 and GXR42-72 to 120,000 rpm on the G-Series II cores and the GXR42-71; running above it is at the owner’s risk
Garrett also offers 1.15 and 1.28 A/R and divided T4 inlet versions
Garrett does not publish a hardware list for this kit; confirm clamps and gaskets before ordering

Frequently Asked Questions

Does the V-band G42 Turbine Housing Kit suit a single-scroll manifold? Yes. This G42 Turbine Housing Kit has an undivided V-band inlet, which matches a single-entry manifold with a V-band collector. Builds on a divided twin-scroll manifold should use the T4 inlet version, offered by Garrett in the same 1.01, 1.15 and 1.28 A/R sizes.
Will the compact G42 cores fit this housing? Yes. The compact cores change the compressor housing, not the turbine side. Garrett lists this housing for the G42-1200 Compact, 860778-5002S, and the G-Series II G42-1325C, 938339-5001S, as well as the versions with full-size compressor housings. The turbine wheel and center section dimensions are the same, so the turbine housing does not change.
How does the 1.01 A/R affect response? It is the most responsive G42 size. The small passage accelerates exhaust into the turbine wheel, so boost comes in sooner than with the 1.15 or 1.28. The cost is higher backpressure near redline, which matters most on large engines running the bigger cores.
What turbine wheel is inside the matching cores? All nine cores Garrett lists for this housing use a turbine wheel with an 82mm inducer and a 75mm exducer, which is why one housing fits the G42, G-Series II G42 and GXR42 families. Garrett describes the G42 turbine wheel aero as new, for higher efficiency and flow.
Do I need a wastegate with this housing? Yes, an external one. Garrett lists the housing as free float, so there is no internal wastegate passage. The exhaust manifold must carry a wastegate flange ahead of the turbine, and the gate is sold separately and should be sized for the boost target of the engine.

About Garrett

Garrett Motion has turbocharged engines since 1955, when its T15 was matched to the Caterpillar D9 crawler, and in 1962 a Garrett turbocharger went into the Oldsmobile Jetfire Turbo Rocket, the first turbocharged production car. Garrett has supplied turbocharging in Formula 1 with Scuderia Ferrari, the FIA World Rally Championship and the 24 Hours of Le Mans. It has operated as a stand-alone company since 2018, and its technology is fitted to around 150 million vehicles worldwide.

Additional Information

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BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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Garrett G42 Turbine Housing Kit, 1.01 A/R V-Band Inlet and Outlet [757707-0011]

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Garrett G42 Turbine Housing Kit, 1.01 A/R V-Band Inlet and Outlet

Features

Specifications

Applications

Notes

Frequently Asked Questions

About Garrett

Reviews