eBay Finds: Roush 2.3 Supercharger, Roush Cat-Back, JLT Intake & S650 Mufflers
Disclosure: This post contains eBay links. As an eBay Partner Network participant, we may earn a commission from qualifying purchases at no extra cost to you. We only highlight 2011+ Coyote Mustang parts (S197 Coyote, S550, S650) from individual / small private sellers — not high-volume dealer warehouses.
Today’s eBay Finds for 2011+ Coyote owners lean hard into aftermarket: a Roush 2.3 supercharger kit, a Roush cat-back, a JLT Gen 3 cold-air, a Vortech 8-rib belt upgrade, an Airaid intake for late S197 GTs, and active-valve performance mufflers for the 2024+ S650.
Roush 2.3 Supercharger Kit (2011–2017 Mustang GT)
Complete Roush 2.3L supercharger kit aimed at 2011–2017 Mustang GT 5.0 Coyotes — the kind of private-seller boost package that usually disappears fast. Confirm pulley size, calibration hardware, and what intercooler / intake pieces are in the crate before you wire the money. Seller chrisito5ohh (17 feedback) — open the listing.
Roush 3-Inch Cat-Back (2015–2017 Mustang GT)
Early S550 GT Roush 3-inch cat-back take-off. Classic Roush tone without buying a brand-new system, and a clean pairing if you are already hunting Roush cold-air or calibration gear for a 2015–2017 Coyote. Seller mdawmd_0 (32 feedback) — open the listing.
JLT 120mm Cold Air Intake (2018–2023 Gen 3 Coyote)
Full JLT cold-air kit for 2018–2023 Mustang GT Gen 3 Coyotes with the popular 120mm inlet. Easy noise and throttle response bolt-on from a tiny-feedback private seller — verify the MAF housing, tube, and filter are all present. Seller colmcdo-2049 (6 feedback) — open the listing.
Vortech 8-Rib Belt Upgrade (Gen 1–3 Coyote)
Vortech 8-rib belt upgrade hardware for Gen 1 through Gen 3 Coyote boost setups. Not a full kit — it is the belt-drive side that matters once you are spinning a Vortech head unit harder than stock serpentine likes. Ask for a parts list photo before you bid it up. Seller dealguy_2003 (415 feedback) — open the listing.
Airaid Cold Air Intake (2011–2014 Mustang GT)
Late S197 Coyote owners: used Airaid cold-air intake for 2011–2014 Mustang GT 5.0. Simple, loud, and still one of the common first bolt-ons on a stock-ish S197 GT. Confirm tube condition and whether the heat shield / filter ship with it. Seller shahars_10 (35 feedback) — open the listing.
Active Valve Performance Mufflers (2024+ S650 GT)
Pair of active-valve performance mufflers for 2024–2026 Mustang GT 5.0 — the S650 take-off market is still thin, so axle-back / muffler swaps show up as individual pairs more often than full cat-backs. Confirm tip finish, actuator plugs, and whether hangers are included. Seller stoves87 (1,472 feedback) — open the listing.
Quick take
The Roush 2.3 kit is the headline if you want a complete private-seller boost package for 2011–2017 GTs; the Roush cat-back covers early S550; JLT handles Gen 3 intake noise; the Vortech 8-rib bits are for Coyote boosters already in deep; Airaid keeps late S197 in the mix; and the active-valve mufflers are the S650 teaser. We skipped dealer-scale stores, GT500 / non-Coyote junk, and thin OEM take-offs. Message sellers, confirm fitment and what’s in the box, and treat every price as a snapshot. More Coyote context: today’s long-tube vs shorty headers guide, yesterday’s eBay Finds, the Mustang GT rear gears roundup, and the Coyote 5.0 build guide.
