Standard Ignition Fuel Injection Relay,Horn Relay,HVAC Heater Relay,HVAC Relay P/N:RY1975
$52.99
(You save)
Switch the right circuit on demand with the Standard Ignition Relay RY1975. This electromechanical relay drops in as a direct-fit replacement for the 2013-2016 Scion FR-S, 2013-2020 Subaru BRZ, and 2017-2020 Toyota 86 — see the Buyer's Guide tab for engine-level details. A relay uses a low-current control signal to energize an internal coil, closing its contacts to switch a higher-current load, which lets a small circuit command a larger one. Standard Ignition catalogs this unit under several circuit names — fuel injection relay, horn relay, HVAC heater relay, and HVAC relay — and the manufacturer lists it as an inhibitor relay.
Built to last: composite housing helps protect against harsh temperatures and demanding under-hood conditions.
Certified quality: produced at TS16949- and ISO9001-certified facilities.
Wear resistance: brass or copper contacts where specified for extended contact wear resistance.
Global OE manufacturer: quality control maintained from componentry to finished product.
Signs the original relay may need replacing include intermittent or no operation of the controlled circuit, or a relay that no longer clicks when energized. Diagnose the circuit first to confirm the relay is the cause before replacing it.
Interchange: R7478 · AR7478 · SU00302438
This part cross-references / interchanges with the following part numbers:
R7478, AR7478, RY1975, SU00302438
Frequently Asked Questions
What is the Standard Ignition RY1975?
It is an electromechanical relay that uses a low-current control signal to close internal contacts and switch a higher-current circuit. The manufacturer lists it as an inhibitor relay.
Which vehicles does the RY1975 fit?
It is a direct-fit replacement for the 2013-2016 Scion FR-S, 2013-2020 Subaru BRZ, and 2017-2020 Toyota 86. Check the Buyer's Guide tab to confirm fitment for your vehicle.
Why does this relay have several part-type names?
Standard Ignition catalogs it under multiple circuit names — fuel injection relay, horn relay, HVAC heater relay, and HVAC relay — while the manufacturer description calls it an inhibitor relay.
What are signs the relay may need replacing?
Intermittent or no operation of the controlled circuit, or a relay that no longer clicks when energized. Diagnose the circuit first to confirm the relay is the cause.
What numbers does the RY1975 interchange with?
It cross-references to R7478, AR7478, and SU00302438. Match the part number and confirm fitment for your specific vehicle before ordering.
Write a Review
STANDARD MOTOR PRODUCTS
Standard Ignition Fuel Injection Relay,Horn Relay,HVAC Heater Relay,HVAC Relay P/N:RY1975
Switch the high-current circuits your engine and accessories depend on with the Standard Ignition Fuel Injection Relay / Fuel Pump Relay / Horn Relay / Ignition Relay (MPN RY-608). This...
Keep a key circuit switching reliably on your classic Mopar with the Standard Ignition Relay HR-132, a direct-fit replacement for a long list of 1969–1981 Chrysler, Dodge, and Plymouth vehicles —...
WARNING:
These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
