JDM Subaru Engines & Transmissions

Subaru is the deepest make we carry. There are normally over 300 Subaru units on this page at any time, split close to evenly between engines and transmissions, covering the EJ, FA, FB and EZ families in both naturally aspirated and turbocharged form.

EJ, FA and FB: what actually changed

Most Subaru buyers are working with one of two generations of boxer four. The EJ family — EJ20, EJ25 and their variants — ran for a long time and is still the one we stock most of. The FA and FB families replaced it, and they are not a revision of the same engine; they are a different design.

The difference that matters once the engine is on the stand is the timing drive. EJ engines are belt driven, which means the timing belt, tensioner and water pump should be replaced as a set while the engine is out. FA and FB engines use a timing chain instead, so that job disappears, and the pre-install checklist is shorter. If you have swapped an EJ before and are about to do your first FB, that is the change to plan around.

Which family your car uses depends on the exact year, model and trim. Every listing on this page states the years and models that unit is listed for — go by the listing, not by the engine code.

Turbocharged and naturally aspirated

Both halves of the EJ line are well represented here. The naturally aspirated units — EJ25 and EJ253 above all — are the bulk of what moves. On the turbo side we carry EJ255 and EJ257, along with JDM-market EJ20 turbo units and the occasional EJ207.

Turbo and naturally aspirated engines of the same displacement are not interchangeable, and the JDM turbo units in particular were built for a different market with different supporting hardware. If you are moving between the two, call before you order rather than after.

The flat-sixes

We also stock EZ30 and EZ36 flat-sixes in smaller numbers. These turn over slowly and the good ones go quickly, so if you see one listed for what you need, it is worth a call the same week.

Transmissions are half this page for a reason

On most makes the transmission is an afterthought. On a Subaru it is not. Between manual, automatic and CVT, and between all-wheel-drive and front-wheel-drive versions of the same gearbox, there is more to get wrong here than on almost anything else we sell — which is why we stock roughly as many Subaru transmissions as engines, and why a fair number of our Subaru customers buy both together.

If you are replacing both, our engine and transmission swap packages are matched units that came out of the same car.

Before you order

Every unit here is a used engine or transmission imported from Japan. Each listing carries its own stock number, photographs of the actual unit, and its approximate mileage. Nothing on this page is a stock photo of a different engine.

An engine code on its own does not guarantee a fit — the mount on the timing side of the block is what decides whether it drops in. Read how to make sure a used engine fits your car before you commit, and check long block versus complete engine so you know what is coming on the pallet.

Not sure? Call (973) 969-5190 with your VIN, or send it through our contact page, and we will confirm the match before you order.

Shipping is free to commercial addresses with a loading dock or forklift in the lower 48 states. Residential delivery is available for an added charge — see shipping details and what to expect from freight delivery.

Shop by engine: EJ25 · EJ20 · FA20 · FB25 · FB20 · EZ30 · all JDM transmissions