Subaru

Which turbo or gearbox for a Subaru with an EJ or EE20 engine?

The answer depends above all on the engine code stamped on the block: the same model — Impreza, Legacy, Forester, Outback or WRX — may require very different parts depending on the exact year and engine variant. Within this range covering model years 2008 to 2018, the collection is split between turbos (new or reconditioned) and 5- or 6-speed manual gearboxes.

The EJ family: the pitfall of similar codes

The bulk of the petrol range centres on the EJ20 and EJ25 blocks, but there are numerous variants and the associated turbos are not the same. The 2.0 Turbo WRX (non-STi) takes exclusively the code EJ205, whereas the STI version in 2.5 WRX STI uses the codes EJ20, EJ25 or EJ257 depending on the year. The 2.5 GT Turbo and the 2.5 XT Turbo share the codes EJ25, EJ255 and MD13, but the 2.5 XT (naturally aspirated) is limited to EJ25 and EJ255 — it does not come with a turbo as standard. Confusing an EJ255 from a WRX GT with an EJ257 from an STI means ordering the wrong reference: the turbine housings and flanges differ. Checking the engine code before placing any order is therefore essential.

Diesel EE20 and FB20 block: worlds apart

The 2.0 D, found on the Outback and Legacy in 150 hp or base variants, is identified by the codes EE20 and EE20Z. This flat-four boxer diesel is structurally different from all EJ units and shares no parts with the petrol versions. The FB20 (2.0 naturally aspirated petrol, code FB20) represents a more recent generation, distinct from the EJ family: the two coexist under the generic designation "2.0" depending on the vehicle's model year.

Gearboxes: 5 or 6 speeds depending on application

The gearboxes available here are exclusively manual, in 5 or 6 speeds. The 6-speed gearbox is typically associated with the most powerful variants — the WRX STI in particular — sold on an exchange basis or rebuilt from your own unit. The 5-speed gearbox covers the mid-range engines on the Impreza, Legacy and Forester. Only one gearbox reference appears in the catalogue (TY756W1ZAB): exact availability by model and engine should be confirmed directly on the product page.