Drivetrain› Manual Transmissions and Components

Subaru

6-Speed Manual Transmission

$8,096.21

SKU: TY856WH4MA

In Stock
In Stock
Ships by Aug 4
Free Shipping over $100
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The Subaru TY856WH4MA is a 6-speed manual transmission specifically for the late 2004 production models of the WRX STi. It is distinguished by its male front axles, differing from earlier models. This transmission incorporates advanced drivetrain technology, including a DCCD (Driver Controlled Center Differential) system that allows for manual adjustment across six levels or operates in an automatic mode for managing the front/rear power split. It features a "SureTrac" Limited-slip front axle for enhanced traction and a mechanical Limited-slip rear axle. The unit is also equipped with an integrated transmission cooler. Key specifications for the TY856WH4MA include a 1.000 transfer reduction, a 3.900 final drive ratio, and a DCCD center differential type with a 35/65 split. The front differential is an A. P. Suretrac, and the rear differential is an R180 plated type. The gear ratios are as follows: 1st: 3.636, 2nd: 2.375, 3rd: 1.761, 4th: 1.346, 5th: 0.971, 6th: 0.756, and Reverse: 3.545.

MIA's Description

The Subaru TY856WH4MA is a 6-speed manual transmission designed for the WRX STi.

This transmission features a DCCD (Driver Controlled Center Differential) with 6 levels of adjustment or an auto mode for front/rear power split. It also includes a "SureTrac" Limited-slip front axle and a mechanical Limited-slip rear axle. The transmission is equipped with a cooler and has a final drive ratio of 3.900.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSubaru
Part NumberTY856WH4MA
CategoryDrivetrain

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy