This Garrett cast turbine housing is engineered as a direct bolt-on replacement for the GT40R series, giving serious turbo builders a proven upgrade path with flexible inlet configurations to match their exhaust manifold setup. It’s built for enthusiasts running GT4088R, GT4094R, or GTX4088R turbochargers who need a durable, precisely cast housing without compromising on fitment. Whether you’re running a divided or undivided inlet, this housing is designed to bolt straight in with minimal fuss.

Specifications

• Housing Type: Cast turbine housing
• Turbine Exit: 3″ V-band exit
• Inlet Configuration Options: T4 divided inlet, T3 undivided inlet, or machined T3 inlet to V-band
• Direct Replacement For: GT40R series turbochargers

Performance & Application

This turbine housing is purpose-built for the GT4088R, GT4094R, and GTX4088R platforms, making it a natural fit for high-output builds already running these turbochargers. The available inlet options — T4 divided, T3 undivided, or machined T3 to V-band — give builders the flexibility to match existing manifold designs without sourcing a completely different turbo. It’s a direct drop-in for anyone upgrading or rebuilding a GT40R-based setup who wants housing compatibility without reworking their exhaust plumbing.

Compatibility & Fitment

• GT4088R turbochargers
• GT4094R turbochargers
• GTX4088R turbochargers
• GT40R series turbochargers (direct replacement)
• Journal Bearing GT4088 (T4 only) — fits with slightly larger T4 bolt pattern
• GT3788R Ball Bearing Turbo (available as an option)

Frequently Asked Questions

What inlet configurations are available for this turbine housing?

It’s available in T4 divided inlet, T3 undivided inlet, or a machined T3 inlet to V-band configuration.

What size is the turbine exit?

The housing features a 3″ V-band exit.

Will this fit a Journal Bearing GT4088?

Yes, it fits the Journal Bearing GT4088 (T4 only), which uses a slightly larger T4 bolt pattern.

Is this housing compatible with the GT3788R?

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