The T25 Plus Turbine Housing is engineered for enthusiasts who need to unlock true T3-level exhaust flow while staying on a T25 flanged manifold. It’s the ideal solution for GT28/GTX28, GTX29, GT30/GTX30, and GT35/GTX35 series turbo owners who want to eliminate turbine-side restriction without switching manifold flange types. This housing bridges the gap between compact T25 packaging and full T3 flow capability, making it a smart upgrade for serious builds looking to maximize turbine efficiency.
Specifications
- Inlet Flange: T25
- Outlet Flange (Standard): T31 V-Band, 2.5 inch
- Outlet Flange (Optional): Welded GT 3″ V-Band Flange with 81mm centering ring
- Turbine Housing A/R Options: .63 A/R
- Turbine Housing A/R Options: .82 A/R
Performance & Application
This T25 Plus housing is purpose-built to deliver full T3 turbine flow characteristics on turbos that use a T25 inlet flange, effectively removing the flow bottleneck that a standard T25 housing would otherwise impose. It’s designed to work across the GT28, GTX28, GTX29, GT30, GTX30, and GT35/GTX35 turbo families, giving builders flexibility to run a larger, higher-flowing turbine housing without changing their manifold’s flange configuration. The choice between the .63 A/R and .82 A/R sizing allows tuners to dial in the desired balance between spool response and top-end flow for their specific application.
Compatibility & Fitment
- Garrett GT28
- Garrett GTX28
- Garrett GEN2 GTX28
- Garrett GTX29
- Garrett GT30R-WG
- Garrett GT30
- Garrett GTX30
- Garrett GEN2 GTX30
- Garrett GT35
- Garrett GTX35
- Garrett GEN2 GTX35
Frequently Asked Questions
- What does the “T25 Plus” name refer to?
- It refers to a turbine housing that flows like a full T3 turbine housing but retains a T25 inlet flange, enabling T3-level flow from a T25 flanged manifold.
- What turbine housing sizes are available?
- The T25 Plus turbine housing is available in .63 A/R and .82 A/R sizes.
- What outlet flange does this turbine housing use?
- It comes standard with a T31 V-band flange outlet measuring 2.5 inches, with an optional welded GT 3″ V-band flange outlet featuring an 81mm centering ring.
- Which Garrett turbo series is this housing compatible with?
- It is available for the Garrett GT28, GTX28, GEN2 GTX28, GTX29, GT30R-WG, GT30, GTX30, GEN2 GTX30, GT35, GTX35, and GEN2 GTX35 series turbochargers.
For builders who demand full T3 exhaust flow without abandoning their T25 manifold, the T25 Plus Turbine Housing delivers a proven, purpose-engineered path to reduced backpressure and improved turbine efficiency.
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