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View listing at Subaru Parts Deal; opens in a new tabFRS/BRZ/86 · Buyer's guide
First-Generation FR-S/BRZ/86 Serpentine Belt, Tensioner and Idler Noise Diagnosis
First-generation Scion FR-S 2013-2016, Subaru BRZ 2013-2020 and Toyota 86 2017-2020; FA20 external accessory drive only
Current seller options
WHERE TO BUY
Open an exact listing, then confirm fitment, stock, price, and shipping with the seller before ordering.
Seller links checked . Prices and availability can change.
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View listing at Blackhawkjapan; opens in a new tabWhat you need to know
First-generation FA20 external accessory drive only. Identify which idler or accessory bearing is noisy before ordering. Excludes internal timing-chain service and second-generation 2.4L cars.
OEM numbers
Toyota catalog shows separate idlers SU003-00500 and SU003-00501. Checked Subaru tensioner path 23769AA080 and Subaru belt 809221180. Exact Dayco tensioner assembly path also checked.Supersession
No timing-belt claim: the FA20 uses a timing chain. Accessory-belt, complete tensioner and two-idler paths remain separate service decisions.
Fitment
First-generation FA20 external accessory drive only. Identify which idler or accessory bearing is noisy before ordering. Excludes internal timing-chain service and second-generation 2.4L cars.
Aftermarket options
Checked OEM belt/tensioner/idlers plus Dayco and Gates technical references. Complete-kit marketing does not prove every pulley in a kit matches the VIN.
Before you buy
This is the external serpentine drive, not a timing belt. The catalog exposes two different idlers. Isolate the pulley or driven accessory before ordering; an unavailable dealer page is not stock.
Research and fitment sources
Supersede reviewed 9 unique research sources for this guide. 6 also appear above as a seller or official action and are not repeated here; 3 additional citations follow.
Research last verified .