Parts for your 2013 Subaru Exiga-Drive belt tensioner

2013 Subaru Exiga drive-belt tensioner — is it used?

Short answer: a separate, spring-loaded drive-belt tensioner isn’t fitted to the 2013 Subaru Exiga models sold with EJ-series engines. Subaru’s own technical documentation backs this up. The Subaru Exiga factory service manual (YA-series, EJ20 SOHC/DOHC) lists belt tension adjustment procedures using the alternator/power-steering bracket and a dedicated A/C idler adjuster, rather than a bolt-on automatic tensioner unit. Likewise, the Subaru Japan FAST parts catalogue for 2013 Exiga (YA4/YA5) shows two individual V-ribbed belts with an idler pulley and adjuster hardware, but no “belt tensioner assembly”.

Why it’s not used: the EJ-based Exiga runs two accessory belts—one for the alternator/power steering and one for the A/C. Tension is set manually via an adjuster bolt and locking hardware on the respective bracket or idler. It’s a robust, simple setup that Subaru carried over for years on EJ engines. The later FB-series engines (found in other Subaru models and in the Exiga Crossover 7 from 2015) moved to a single serpentine belt with a spring-loaded tensioner, but that hardware doesn’t apply to the 2013 EJ-powered Exiga.

What owners should do instead: servicing focuses on belt condition and correct manual adjustment rather than swapping a tensioner unit. Under the bonnet, a technician will check for cracking, glazing, frayed edges, or rubber dust, and then set belt tension via the adjuster bolts, rechecking after a brief run. Idler pulleys should spin freely with no rumble. As a rule of thumb, inspect belts every service (about 10,000–15,000 km) and expect replacement somewhere between 60,000 and 100,000 km depending on climate and load. If there’s belt squeal on cold start, intermittent battery light, heavy steering at idle, or A/C slip noises, it’s time to inspect and adjust. If an idler pulley bearing feels rough or noisy, replace the pulley—there’s still no separate automatic tensioner to buy for this model year.

• Technical sources referenced: Subaru Exiga YA-series Factory Service Manual (Drive Belt sections for EJ20 SOHC/DOHC) and Subaru FAST parts catalogue (Group 73 – Fan & Generator) for 2013 YA4/YA5, which specify adjustable brackets/idlers and list no belt tensioner assembly.

Popular questions about the 2013 Subaru Exiga drive-belt tensioner

Does a 2013 Exiga have a serpentine belt tensioner?
No. The EJ-powered 2013 Exiga uses two V-ribbed accessory belts adjusted by an idler/alternator bracket, not a spring-loaded serpentine belt tensioner. If you’re seeing listings for a “drive-belt tensioner”, they typically apply to FB-engine Subarus, not this EJ setup.

How do you adjust the accessory belt tension on a 2013 Exiga?
With the engine off, loosen the lock bolts on the relevant bracket or A/C idler, turn the adjuster to set tension, then re-tighten and recheck after a short run. It’s a straightforward job for a workshop with the right specs, most owners prefer a mechanic to do it during routine servicing.

What symptoms point to incorrect belt tension on an Exiga?
Listen for squeal on start-up or when turning the steering at low speed, watch for a flickering battery light, feel for heavier-than-normal steering, or notice A/C performance changing with engine speed. Any of these can indicate a loose belt, glazing, or a tired idler pulley bearing.