Mitsubishi MHI Turbo Rebuild

MHI uses a model designation system that tells you exactly what is inside the turbo if you know how to read it. Take TD05H-16G-7cm² as an example:

TD05 = turbine housing family (determines physical size and mounting flange). H = turbine wheel style (H is most common on performance units; HR = twin scroll). 16 = compressor wheel size identifier (MHI internal sizing code; larger numbers mean larger flow). G = compressor blade style (G/Gk = alternating tip heights). 7cm² = turbine housing scroll area (similar to A/R on Garrett; 6cm² ≈ A/R 0.41, 7cm² ≈ 0.49, 8cm² ≈ 0.57).

TD05 / TD05H

The most rebuilt MHI unit we see. The TD05H-16G is the dominant variant, used as OEM equipment on the EVO I through III and as the most common aftermarket upgrade for Subaru WRX, STI, and DSM platforms. We stock all rebuild components for fast turnaround. Also covers TD05H-18G, TD05H-20G, and TD05-14B variants.

TD05HR

Twin scroll turbine housing variant of the TD05H. Used as OEM on the Lancer Evolution IV through VIII. The twin scroll design improves exhaust pulse separation at low RPM for faster spool. Identified by the 49178-prefix part number and the twin entry turbine housing. Parts stocked for this series as well.

TD04 / TD04L

The small-frame MHI units. TD04 was used on a wide range of OEM applications from the late 1980s through 2000s. TD04L has a slightly larger turbine exducer diameter. Both use the 49177/49377 prefix part numbers and share internal components. Common on Subaru WRX non-STI, Dodge Neon SRT-4, PT Cruiser GT, Mitsubishi Galant, Eclipse, Volvo, and many others.

TD04H / TD04HL

Larger turbine wheel variant of the TD04 family. 49189-prefix part numbers. The TD04HL is identifiable by its integrated bypass valve cast into the compressor housing, a unique feature not found on other TD04 variants. Used extensively on Volvo T5 and high-boost European applications.

TD06 / TD06SL2

The step up from TD05 in the MHI lineup. TD06SL2 (semi-large frame 2) is the most common aftermarket variant, capable of 450-600 HP on the right application. Used as upgrade turbos on EVO and WRX builds that have outgrown the TD05 platform. Also used OEM on some Japanese domestic market vehicles.

TD07 / TD07S

Large frame MHI unit. The TD07 compressor housing was used in the GReddy T67 hybrid (TD07 compressor on a TD06 turbine) which was a popular high-horsepower street unit in the DSM and EVO community. TD07S is a slightly modified version. Contact us with your specific configuration as the TD07 has several variants.

TD08 / TD08H

The largest frame in the MHI performance lineup. Used in the GReddy T78 and T88 hybrid configurations (T78 = TD08 compressor on TD07 turbine, T88 = full TD08). Race and extreme street applications. Contact us before shipping to confirm rebuild options and parts availability for your specific configuration.

TF035 / TF04 / TF06

The TF-series covers OEM diesel and smaller passenger car applications including the TF035HL, TF035HM, and TF035HS. Commonly found on Mitsubishi diesel 4M40/4M41 engines in Pajero and Outlander. Contact us with your specific model for rebuild options.

GReddy TZ Series

GReddy T517Z, T518Z, T618Z, and T620Z are all built on MHI TD05H internals. GReddy develops proprietary compressor and turbine housings around the MHI core for specific vehicle applications. Rebuild components are the same parts we stock for the TD05H line.

GReddy T67-25G

The T67 is a hybrid built on MHI TD07 compressor hardware mated to a TD06 turbine section with a machined TD06H exhaust housing. GReddy spec 25G compressor wheel. One of the most popular GReddy performance upgrades for the EVO, DSM, and rotary platforms.

GReddy T78 / T88

The T78 uses an MHI TD08 compressor section mated to a TD07 turbine. The T88 uses full TD08 turbine and compressor sections. Available in multiple turbine housing configurations. Two of the most iconic JDM big-single turbos ever produced.