2013-2020 Scion FR-S, Subaru BRZ and Toyota 86 Factory Rear Exhaust Identification

The checked catalogs establish production branches rather than one universal chain: Toyota/Scion SU003-01118 and SU003-03938/SU003-05271 before the 2017 refresh, then SU003-06393 and SU003-06398; Subaru 44200CA000 then 44200CA060, and 44300CA060 then 44300CA080 then 44300CA150 by catalog year. Gaskets also split from 44022AA131 to the facelift 44011CA000 application. No Toyota/Subaru cross-brand supersession, package interchange or emissions-boundary equivalence is asserted.

Begin with both VINs/builds, badge, production/facelift and trim or factory exhaust package. Prove the lawful downstream boundary after the retained front pipe/catalyst, then compare pipe diameter/length, inlet and outlet flanges, bolt/spring/gasket arrangement, resonator, muffler outlets, hanger locations and isolators, heat shields and bumper-tip position. Itemize center/mid pipe, resonator, muffler, left/right outlets or tips, flanges, studs/bolts, springs, gaskets, clamps, hangers/isolators and shields. Reject crushed/kinked pipe, perforation or severe scale, cracks, warped flanges, broken studs, loose or removed internals, impact damage, missing sections, non-factory cutting/welding, altered tips, hidden coatings or freight damage. Preserve ZN6-0023 catalyst/sensor diagnosis, retain all certified emissions equipment, verify local noise/emissions legality and use qualified lifting/exhaust service; provide no emissions-defeat instructions.

A badge/build-correct factory section is the reference restoration path. A documented cat-back can be considered only when its lawful upstream boundary, flanges, hangers, bumper clearance, noise/emissions status and included hardware match the car. Headers, catalyst/front-pipe changes, emissions deletes, turbo exhausts and universal cut-and-weld systems are outside this guide and are not OEM supersessions.

US first-generation FR-S/BRZ/86 rear exhaust after the lawful catalyst boundary only. Match both VINs/builds, badge, pre-facelift/facelift, package, exact section, flanges, hangers, gaskets and bumper tips. Toyota and Subaru numbers are production branches, not cross-brand supersessions. Reject cut/welded, crushed, perforated, altered or freight-damaged parts; retain all certified emissions equipment and verify noise/emissions legality.

Supersede reviewed 12 unique research sources for this guide. 4 also appear above as a seller or official action and are not repeated here; 8 additional citations follow.

Research last verified 2026-08-05.

1. Toyotapartsdeal — exhaust pipeOpen source
2. Toyotapartsdeal — exhaust pipeOpen source
3. Subaru Parts Deal — exhaustOpen source
4. Subaru Parts Deal — exhaustOpen source
5. Partsdocs — 55Open source
6. Toyotapartsdeal — 18 my17 86 trd exhaust isscOpen source
7. Subaruonlineparts — L101SAR000Open source
8. HKS Power co — 32016 AT131Open source