Audi 5 Cyl. K26 flanged Turbine Housing – GT28/GTX .82 A/R

Built for Audi 5-cylinder enthusiasts upgrading their factory K24/K26 turbo setup, this turbine housing lets you retain your original manifold and downpipe connections while stepping up to a GT28/GTX28 series turbo. It’s the ideal solution for anyone chasing more power without the hassle of custom fabrication or aftermarket flange adapters. A direct bolt-on design makes this the smart choice for a clean, factory-style installation.

Specifications

• A/R Ratio: .82
• Turbine Inlet Flange: K26 flanged
• Turbine Outlet Flange: K26 flanged, 4 bolt outlet
• Compatible Turbine Wheel Size: 53.5mm
• Turbo Family: GT28

Performance & Application

This housing is designed specifically for Audi 5-cylinder K24/K26-equipped engines looking to upgrade to a GT28/GTX28 series turbocharger. By matching the K26 flange pattern on both the inlet and outlet, it allows the use of the stock Audi manifold and stock downpipe flanges, eliminating the need for custom fabrication. It’s the go-to housing for enthusiasts building a bolt-on turbo upgrade path while keeping factory-style plumbing intact.

Compatibility & Fitment

• Audi 5-cylinder K24/K26 engines — direct replacement application
• Fits GT28RS turbos with 53.5mm turbine wheel
• Fits GT2871R turbos with 53.5mm turbine wheel
• Fits GT2876R turbos with 53.5mm turbine wheel

Frequently Asked Questions

What is the A/R ratio of this turbine housing?

This turbine housing features a .82 A/R ratio.

Which turbos is this turbine housing compatible with?

It fits GT28RS, GT2871R, and GT2876R turbos that have the 53.5mm turbine wheel.

Can I keep my stock manifold and downpipe with this housing?

Yes, this housing is K26 flanged in and out, allowing the use of the stock Audi manifold and stock downpipe flanges.

What vehicles is this designed for?

This turbine housing is designed as a direct replacement for Audi 5-cylinder K24/K26 applications.

For Audi 5-cylinder owners ready to move into GT28/GTX28 turbo territory without sacrificing factory-style fitment, this K26 flanged turbine housing delivers the exact bolt-on solution the platform demands.