Is the divided T4 G35 Turbine Housing Kit right for a single-scroll manifold?

No. The G35 Turbine Housing Kit in 1.06 A/R divided T4 is designed to keep the two scrolls of a twin-scroll manifold apart. On a single-scroll T4 manifold that benefit is lost, and Garrett offers T3 and V-band inlet G35 housings that suit single-entry manifolds better.

Which G35 cores does Garrett list it for?

Three standard-rotation super cores: the G35-900, the G35-1050 and the G-Series II G35-990. All share the 68mm inducer, 62mm exducer G35 turbine wheel, and Garrett rates them together from 550 to 1050 horsepower on engines between 2.0L and 5.5L. Reverse-rotation G35 cores are not on the list.

What engine size suits a 1.06 A/R divided G35 housing?

Larger engines, usually 3.5L and above, where there is enough exhaust to spool a G35 through a 1.06 A/R volute. The divided inlet helps response, but on a 2.0L the combination of a big turbine wheel and this A/R will still bring boost in late.

Can I keep the divided housing if I upgrade to a G-Series II G35-990?

Yes. Garrett lists it for the G35-990 G-Series II super core as well as the first-generation G35-900 and G35-1050, and states that G-Series II uses the Gen I compressor and turbine housings. The housing and the twin-scroll manifold can both stay in place through a core upgrade.

Can I run it on a reverse rotation G35?

No. Garrett lists this part for standard-rotation cores only and offers no divided T4 housing for reverse G35 cores. Reverse-rotation G35 builds choose from T3 or V-band inlet free-float housings, which Garrett lists between 0.61 and 1.21 A/R, so a mirrored twin build cannot use a divided T4 on both banks.

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Description

Garrett G35 Turbine Housing Kit, 1.06 A/R Divided T4 Free Float

Garrett’s G35 Turbine Housing Kit with a divided T4 inlet at 1.06 A/R is the twin-scroll housing for standard-rotation G35 cores, cast in stainless steel with a V-band outlet and no internal wastegate. Garrett lists part 740902-0108 for the G35-900 and G35-1050 and the G-Series II G35-990, the cores it rates from 550 to 1050 horsepower. It is aimed at a large-displacement engine on a divided T4 manifold, typically 3.5L and up, where separated scrolls help a big G35 spool despite a generous A/R. Owners with a single-entry manifold gain nothing from the divided inlet and should pick a T3 or V-band housing.

Twin-Scroll on the G35

Garrett lists the divided T4 as one of three inlet styles for the G35 free-float range, alongside T3 and V-band. The divided inlet carries the two pulse streams of a twin-scroll manifold separately to the 68mm G35 turbine wheel, using pulse energy to help spool while the 1.06 A/R keeps the top end open. Boost is set by external wastegates on the manifold.

Features

Divided T4 inlet for twin-scroll manifolds
1.06 A/R with a V-band outlet
Free float, used with one or two external wastegates
Stainless steel, rated to 1050C (1922F)

Specifications

Garrett part number: 740902-0108
A/R: 1.06
Turbine inlet and outlet: T4 and V-band
Wastegate: External (free float)
Inlet: Divided
Rotation: Standard
Material: Stainless steel, rated to 1050C (1922F)

Applications

Garrett lists this G35 Turbine Housing Kit for these standard-rotation super cores, rated from 550 to 1050 horsepower on 2.0L to 5.5L engines:

Garrett G35-900: 880695-5001S
Garrett G35-990 G-Series II: 934123-5001S
Garrett G35-1050: 880695-5002S

Notes

An external wastegate is required, because this free-float housing has no internal wastegate
The G35 super core is sold separately
Standard rotation; Garrett lists no divided T4 housing for reverse-rotation G35 cores
Garrett does not publish the contents of this turbine kit; contact us to confirm before ordering

Frequently Asked Questions

Is the divided T4 G35 Turbine Housing Kit right for a single-scroll manifold? No. The G35 Turbine Housing Kit in 1.06 A/R divided T4 is designed to keep the two scrolls of a twin-scroll manifold apart. On a single-scroll T4 manifold that benefit is lost, and Garrett offers T3 and V-band inlet G35 housings that suit single-entry manifolds better.
Which G35 cores does Garrett list it for? Three standard-rotation super cores: the G35-900, the G35-1050 and the G-Series II G35-990. All share the 68mm inducer, 62mm exducer G35 turbine wheel, and Garrett rates them together from 550 to 1050 horsepower on engines between 2.0L and 5.5L. Reverse-rotation G35 cores are not on the list.
What engine size suits a 1.06 A/R divided G35 housing? Larger engines, usually 3.5L and above, where there is enough exhaust to spool a G35 through a 1.06 A/R volute. The divided inlet helps response, but on a 2.0L the combination of a big turbine wheel and this A/R will still bring boost in late.
Can I keep the divided housing if I upgrade to a G-Series II G35-990? Yes. Garrett lists it for the G35-990 G-Series II super core as well as the first-generation G35-900 and G35-1050, and states that G-Series II uses the Gen I compressor and turbine housings. The housing and the twin-scroll manifold can both stay in place through a core upgrade.
Can I run it on a reverse rotation G35? No. Garrett lists this part for standard-rotation cores only and offers no divided T4 housing for reverse G35 cores. Reverse-rotation G35 builds choose from T3 or V-band inlet free-float housings, which Garrett lists between 0.61 and 1.21 A/R, so a mirrored twin build cannot use a divided T4 on both banks.

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.

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BP Pricing Difference

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Garrett G35 Turbine Housing Kit, 1.06 A/R Divided T4 Free Float [740902-0108]

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Garrett G35 Turbine Housing Kit, 1.06 A/R Divided T4 Free Float

Twin-Scroll on the G35

Features

Specifications

Applications

Notes

Frequently Asked Questions

About Garrett

Reviews