Availability
Automotive Relays
Generally speaking, a relay is an electronically operated switch that allows you to control a circuit with a low-power signal. Almost every system on your vehicle incorporates...
Generally speaking, a relay is an electronically operated switch that allows you to control a circuit with a low-power signal. Almost every system on your vehicle incorporates a relay in its controls, including the starter, electric cooling fans, fuel pump, headlights, and air conditioner, plus accessories like nitrous, off-road lights, and winches.
Whether you’re assembling an all-new wiring harness, or making repairs to existing circuits, the extensive selection, powerful search tools, and tech expertise at Summit Racing Equipment will help you find the right size and amperage rating of relay for the job.
Top Brands
Generally speaking, a relay is an electronically operated switch that allows you to control a circuit with a low-power signal. Almost every system on your vehicle incorporates a relay in its controls, including the starter, electric cooling fans, fuel pump, headlights, and air conditioner, plus accessories like nitrous, off-road lights, and winches.
Whether you’re assembling an all-new wiring harness, or making repairs to existing circuits, the extensive selection, powerful search tools, and tech expertise at Summit Racing Equipment will help you find the right size and amperage rating of relay for the job.
Top Brands
Don’t take chances with a knock-off relay! Summit carries general purpose and application-specific relays from well-regarded brands like Painless Performance, MSD, Auto Rod Controls, Bosch, ACDelco, Standard Motor Products, Hella, and more.
Showing In Stock Items. Show All 136 Items.
Relays, Fuel Pump, 30 Amp, 12V, Single Pole, Blade Type, Wire Harness Included, Each
Part Number: HLY-12-753
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
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Relay and Harness, 40 Amp, Single Pole, 12 in. Wire, 14-Gauge, Each
Part Number: SUM-890005
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay, Fuel Pump, 30 Amp, Single Pole, Each
Part Number: MRF-MP-1050
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay, Fuel Pump, 30 Amp, Single Pole, Each
Part Number: MRF-MP-1025
Estimated Ship Date: Today
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay, Headlight, 40 Amp, Single Pole, 9004/9007, Each
Part Number: PRF-30816
Estimated Ship Date: Today
Estimated Ship Date: Today
Reverse Dome Light Relay, 12 V, 5-Blade, Kit
Part Number: RFW-RD3
Not Yet Reviewed
Estimated Ship Date: Feb 4, 2027 if ordered today
Estimated Ship Date: Feb 4, 2027 if ordered today
Fan Harness with Relay, 40 amp, 12 V, Single Pole, Each
Part Number: SPU-IX-FRH
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay and Connector Kit, 12 V, 40 amps, Single Pole, Spade Terminal Type, Wiring Harness, Kit
Part Number: PCO-5593PT
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay and Harness, 40 Amp, Single Pole, Kit
Part Number: PCO-5591PT
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay, 12 V, 40 amps, Single Pole, Wire Leads Terminal Type, Wiring Harness, Fuse, Kit
Part Number: AWW-500479
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay, 12 V, 70 amps, Single Pole, Wire Leads Terminal Type, Wiring Harness, Kit
Part Number: AWW-500511
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay, Ignition Power, Auto, 30 Amps, 12/16 V, 3 Amp 400 V Diode, with Harness, Male/Female Blade Connectors/Terminals, Screws, and Socket, Kit
Part Number: PNX-2001
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay, Pro-Flo 4, Fuel Pump, EFI, Fuel Injection, 30 Amp, Harness Included, Inline Fuse, Kit
Part Number: EDL-3534
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Relay, Water Pump, 30 Amp, Single Pole, Wiring Harness Crimp Connectors, Each
Part Number: MEZ-WIK346
Estimated Ship Date: Today
Estimated Ship Date: Today
Relays, 30 Amp, 12 V, Single Pole, 5 Blade Terminals, Wiring Harness, General Use, Each
Part Number: AAF-ALL76188
Estimated Ship Date: Today
Estimated Ship Date: Today
Fan Relay Kit, 70 Amps, 12V, Temperature Sender, Single Relay, Fuse, Wire Harness, Kit
Part Number: AWW-510002
Estimated Ship Date: Today
Estimated Ship Date: Today
Fan Relay Kit, 80 Amps, 12V, Temp Sender, Two 40 Amp Relays, On at 210 degrees, Off 195 degrees, Harness, Kit
Part Number: AWW-510001
Estimated Ship Date: Today
Estimated Ship Date: Today
Fan Relay, Fan-Thom II, 12 V, 35 amps, Single Pole, Wiring Harness, Kit
Part Number: PRF-30133
Estimated Ship Date: Today
Estimated Ship Date: Today
Direct Fit Auto Fuse Series-Relay and Connector Kit , Needed with 1967-1978 Chevy Truck Direct Fit Auto Fuse Dash harness Purchase , Chevrolet
Part Number: SUM-RP20466
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Relays, Dual Fuel Pump, 40 Amp, 12V, Single Pole, Blade Type, Wire Harness Included, Chrysler, Dodge, Ford, Kit
Part Number: HLY-12-759
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Relay, Heavy-Duty, 40 Amp, Double Pole, Double Throw, Anti-Flyback, Harness Included, Each
Part Number: NEX-15515
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Relays, 40 Amps, 12 Volts, Screw Type Terminals, 4 Terminals, Harness Not Included, Each
Part Number: FCH-3020100067
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay, 12 V, 35 amps, Single Pole Double Throw, Wiring Harness, Waterproof Design, Kit
Part Number: AWW-500093
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Glow Plug Harness Relay
Part Number: RNB-904-100
Not Yet Reviewed
Estimated Ship Date: Nov 30, 2026 if ordered today
Estimated Ship Date: Nov 30, 2026 if ordered today
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