Animated side-by-side schematic comparing a timing belt and a timing chain turning engine sprockets — Simple animated illustration. Motion stops if your device requests reduced motion.

Timing belts

A reinforced belt drives the camshafts. It has a replacement schedule that depends on the engine and model year. For example, Subaru parts information lists timing belts for older Baja, Forester, Impreza, Legacy and Outback applications, and Subaru’s 2020 schedule still specifies a timing belt for WRX STI.

Timing chains

A metal chain performs the same timing job on many later Subaru engines. It does not follow the same routine replacement schedule as a belt, but its guides, tensioners and lubrication can still need diagnosis if there is a problem. A 2020 Forester 2.5L has timing-chain components in Subaru’s parts catalog.

Why year alone is not enough

The 2018 WRX and WRX STI are a useful example: the engine choice changes the answer. We confirm the VIN, engine and model year rather than assuming every newer Subaru has a chain.

Why timing service matters

A neglected belt can fail and cause serious engine damage on affected engines. When we plan a belt job, we also inspect related components and discuss what should be serviced while the timing covers are open.

Not sure what is in yours?

Call with the year, model and engine or VIN. We can tell you which timing system your Subaru uses and whether there is scheduled work to plan.

Timing belt service for applicable Subarus.

For a belt-equipped engine, we confirm the year, engine and service history before planning replacement. Related components may be worth addressing during the same job; we explain the scope before work begins. A chain-equipped engine does not receive a routine belt replacement, though a noise or timing fault still deserves diagnosis.

Call with your VIN or visit Subaru maintenance and diagnostics to discuss your vehicle.