Help keep power flowing to your accessory circuits with the Standard Ignition RY-370, a 1991-1995 Acura Legend relay replacement that also fits the 1991-2001 Acura NSX and 1992-1994 Acura Vigor. It is a direct-fit replacement for these listed applications; for engine details on each vehicle, see the "Vehicles it fits" section.
This accessory relay uses a small control current to switch a higher-current circuit, sending power to the vehicle's accessory circuits when it is commanded on. If the original relay has failed, the RY-370 replaces it.
- Built for under-hood duty: A composite housing is designed to protect the relay from harsh temperatures and demanding under-hood conditions.
- Certified manufacturing: Standard Ignition's relays are produced in TS16949 and ISO9001 certified facilities.
- Original equipment know-how: Standard Ignition is a global manufacturer of original equipment ignition products and maintains quality control throughout manufacturing, from components to the finished product.
- Direct fit: A direct-fit replacement for the listed Acura applications.
Signs this relay may need replacing include accessories that won't power up, work only intermittently, or stay on when they should shut off. Fuses, wiring and switches can cause the same symptoms, so diagnose the circuit before replacing the relay.
Interchange: 89057621 · 39796SL0003 · R4781 · 20449 · AR510
This part cross-references / interchanges with the following part numbers:
89057621, 39796SL0003, R4781, 20449, AR510, RY-370
Frequently Asked Questions
What does an accessory power relay do?
A relay uses a small control current to open and close a higher-current circuit. The RY-370 switches power to the accessory circuits on the listed Acura models.
What are signs this relay may need replacing?
Accessories that won't power up, work intermittently or stay on can be signs of a failed relay. Fuses, wiring and switches can cause the same symptoms, so diagnose the circuit first.
What is the RY-370 housing made of?
Standard Ignition builds this relay with a composite housing designed to protect it from harsh temperatures and demanding under-hood conditions.
Does this relay fit the 1991-2001 Acura NSX?
Yes. It is listed as a direct-fit replacement for the 1991-2001 Acura NSX. Check the "Vehicles it fits" section to confirm your exact vehicle.
What quality standards is the RY-370 built to?
Standard Ignition's relays are manufactured in TS16949 and ISO9001 certified facilities. Standard Ignition is a global manufacturer of original equipment ignition products.
