Is the 1.44 A/R G45 Turbine Housing Kit only for very large engines?

Mostly. The 1.44 A/R G45 Turbine Housing Kit is the biggest G45 size and suits engines toward 8.0L or high-rpm builds using the largest GXR45 compressors. Smaller engines can run it, but boost will arrive noticeably later than with the 1.28 or 1.15.

What is the most powerful core this housing fits?

The G-XRace GXR45-82, super core 952766-5005S, which Garrett rates at 750 to 1800 horsepower on engines from 2.0L to 8.0L. Garrett calculates the rating from compressor choke flow, so it represents potential flywheel horsepower. Reaching it takes the fuel system, boost and calibration to match, and this large housing.

Does the G45-1500 fit this housing?

Yes. Garrett lists the G45-1500, 888169-5005S, with all eight G45 turbine kits, including this one. Garrett rates the G45-1500, with its 76mm by 109mm compressor wheel, at 750 to 1500 horsepower and gives it a maximum turbocharger speed of 100,000 rpm.

Is a T4 twin-scroll manifold required?

Yes. This version has a divided T4 inlet, so the manifold must end in a divided T4 flange. Garrett sells the 1.44 A/R G45 housing with a V-band inlet as part 757707-0022 for manifolds with a single V-band collector. Both versions fit the same nine cores.

Is the super core included?

No. This kit is the turbine housing only, without the center section, rotating assembly or compressor housing. Those come as a G45, G-Series II G45 or GXR45 super core, sold separately so the builder can choose compressor and housing size apart.

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Description

Garrett G45 Turbine Housing Kit, 1.44 A/R T4 Divided Inlet V-Band Outlet

Garrett’s G45 Turbine Housing Kit in 1.44 A/R is the largest twin-scroll housing Garrett makes for the G45 frame, with a divided T4 inlet, a V-band outlet and no internal wastegate, cast in stainless steel. It is built for the top of the G45 range: big engines toward 8.0L and the high-flow cores such as the GXR45-80 and GXR45-82, rated to 1750 and 1800 horsepower. Here, backpressure would otherwise cap power. Boost arrives later than with any other G45 housing, so it is wrong for a small engine or a build that needs low-rpm torque.

Features

Largest A/R in the G45 Turbine Housing Kit range
Divided T4 inlet for twin-scroll manifolds
V-band outlet and a free-float layout for an external gate

Specifications

Garrett part number: 757707-0026
A/R: 1.44
Turbine inlet and outlet: T4 divided and V-band
Divided inlet: Yes
Wastegate: External (free float)
Rotation: Standard
Material: Stainless steel
Matching turbine wheel: 89mm inducer and 82mm exducer

Applications

Garrett lists this G45 Turbine Housing Kit for:

Garrett G45-1475: 888169-5007S super core
Garrett G45-1500: 888169-5005S super core
Garrett G45-1600: 888169-5006S super core
Garrett G45-1610 G-Series II: 938339-5004S super core, 938338-5004S CHRA
Garrett GXR45-67 G-XRace: 934173-5003S super core
Garrett GXR45-73 G-XRace: 934173-5004S super core
Garrett GXR45-76 G-XRace: 952766-5001S super core
Garrett GXR45-80 G-XRace: 952766-5004S super core
Garrett GXR45-82 G-XRace: 952766-5005S super core

Notes

An external wastegate is required, because this housing has no internal wastegate
The G45 or GXR45 super core is sold separately
Garrett publishes a maximum turbocharger speed for each core, from 100,000 rpm on the G45-1500, GXR45-76, GXR45-80 and GXR45-82 to 120,000 rpm on the G-Series II G45-1610; running above it is at the owner’s risk
Smaller sizes and V-band inlet versions are listed under G45 turbine housings
Garrett does not publish a hardware list for this kit; confirm clamps and gaskets before ordering

Frequently Asked Questions

Is the 1.44 A/R G45 Turbine Housing Kit only for very large engines? Mostly. The 1.44 A/R G45 Turbine Housing Kit is the biggest G45 size and suits engines toward 8.0L or high-rpm builds using the largest GXR45 compressors. Smaller engines can run it, but boost will arrive noticeably later than with the 1.28 or 1.15.
What is the most powerful core this housing fits? The G-XRace GXR45-82, super core 952766-5005S, which Garrett rates at 750 to 1800 horsepower on engines from 2.0L to 8.0L. Garrett calculates the rating from compressor choke flow, so it represents potential flywheel horsepower. Reaching it takes the fuel system, boost and calibration to match, and this large housing.
Does the G45-1500 fit this housing? Yes. Garrett lists the G45-1500, 888169-5005S, with all eight G45 turbine kits, including this one. Garrett rates the G45-1500, with its 76mm by 109mm compressor wheel, at 750 to 1500 horsepower and gives it a maximum turbocharger speed of 100,000 rpm.
Is a T4 twin-scroll manifold required? Yes. This version has a divided T4 inlet, so the manifold must end in a divided T4 flange. Garrett sells the 1.44 A/R G45 housing with a V-band inlet as part 757707-0022 for manifolds with a single V-band collector. Both versions fit the same nine cores.
Is the super core included? No. This kit is the turbine housing only, without the center section, rotating assembly or compressor housing. Those come as a G45, G-Series II G45 or GXR45 super core, sold separately so the builder can choose compressor and housing size apart.

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 G45 Turbine Housing Kit, 1.44 A/R T4 Divided Inlet V-Band Outlet [757707-0026]

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Garrett G45 Turbine Housing Kit, 1.44 A/R T4 Divided Inlet V-Band Outlet

Features

Specifications

Applications

Notes

Frequently Asked Questions

About Garrett

Reviews