Parts for your 2015 Subaru Legacy-Timing belt kit

2015 Subaru Legacy (Liberty) timing-belt-kit — is it used?

For the 2015 Subaru Legacy (called Liberty in Australia), a timing-belt-kit isn’t used. The petrol engines offered in Australia and New Zealand for this model year — the 2.5‑litre FB25 flat‑four and the 3.6‑litre EZ36 flat‑six — both run timing chains rather than belts, so there’s no timing-belt-kit to replace.

Technical sources back this up: Subaru’s factory service information for the 2015 Legacy/Outback identifies a chain-driven cam system on the FB25 and EZ36, and the maintenance schedule lists no periodic timing belt replacement. Major aftermarket catalogues used by workshops in AU/NZ (e.g., Gates and Dayco application data) also show “no timing belt” for these engines in MY2015 Legacy/Liberty. These sources are standard references for parts interpretation and service planning across the trade.

Why there’s no timing-belt-kit here comes down to Subaru’s engineering shift. The FB-series four and EZ36 six use lifetime timing chains with hydraulic tensioners and guides. Chains are designed to last the life of the engine under normal conditions and aren’t treated as service items like belts on earlier EJ-series engines. That said, good servicing habits matter: clean oil keeps chain tensioners and guides happy, and helps avoid chain noise or stretch issues over very high kilometres.

• Engines fitted to AU/NZ 2015 Legacy/Liberty:
  • 2.5L FB25 petrol — timing chain (no belt kit)
  • 3.6L EZ36 petrol — timing chain (no belt kit)

What should owners focus on instead? Stick to regular oil and filter changes, use the correct spec oil, and keep an ear out for rattles on cold start that persist when warm. If a chain, guide, or tensioner ever does need attention, it’s a specialised internal repair rather than a routine belt-and-pulley kit swap. While you’re there, remember the serpentine (accessory) belt is still an external wear item and should be inspected and replaced as needed during scheduled servicing.

A note on diesels: some Subaru models in our region around this era used the EE20 diesel, which does have a timing belt and a service interval. However, the 2015 Legacy/Liberty sold in Australia and New Zealand was petrol-only. If assessing a private import or unusual variant, confirm by VIN and engine code.

• Does a 2015 Subaru Legacy have a timing belt or a chain?
  It has a timing chain. Both the 2.5L FB25 and 3.6L EZ36 petrol engines in the AU/NZ 2015 Legacy/Liberty use chains, so there’s no timing-belt-kit to replace.
• Is there a timing-belt service interval for a 2015 Legacy?
  No. There’s no scheduled belt replacement because it doesn’t use one. Keep up with oil changes to support the timing chain, and have any persistent chain noise checked by a qualified technician.
• Are any 2015 variants fitted with a timing belt?
  Not the petrol Legacy/Liberty in Australia or New Zealand. Some Subaru EE20 diesel models of a similar era use a belt, but the 2015 Legacy/Liberty here was petrol-only. For imports or unusual trims, verify the engine code.