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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.

Individual Parts

Results 1 - 25 of 49

1958-62 Impala , Horn Relay , Required When Converting To Internal Regulator Alternators , Restoration , Chevrolet , GM#12339243 , Each

Part Number: SUM-RP20803

Not Yet Reviewed

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Parking Brake Warning Relay, Brake Light Turn Signal Converter Module

Part Number: KCW-89688

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Convertible Top Relay

Part Number: SMP-RY1985

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Turn Signal Flasher, LED, 2-Terminal, 12V, 20 Amp Rating, Each

Part Number: UPD-90652

4.6 out of 5 stars ( 75 )

Estimated Ship Date: Today

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Turn Signal Flasher, LED, 2-Terminal, 12V, 20 Amp Rating, Each

Part Number: UPD-90650

4.6 out of 5 stars ( 52 )

Estimated Ship Date: Today

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Relay, Power Window, Reversing, 2-Window, 12 V, 40 amps, Each

Part Number: AWW-510961

Not Yet Reviewed

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Flasher Unit, LED Flasher, 12 V, 20 Amp Rating, Two Terminals, Reverse Polarity, Extension Wires, Each

Part Number: UPD-90649

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Turn Signal Flasher, LED, 3-Terminal, 12V, 20 Amp Rating, Each

Part Number: UPD-90651

4.71 out of 5 stars ( 14 )

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CF15 (CF13/CF14/EP34/EP35) LED Turn Signal Flasher

Part Number: DOD-DD4049

5.0 out of 5 stars ( 1 )

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EP27 LED Turn Signal Flasher

Part Number: DOD-DD4005

Not Yet Reviewed

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Flasher Units, LED Flashers, 12 V, 25 amps, 2 Terminals, Polarity Reversing Adapter, Each

Part Number: EMS-MS300-80

5.0 out of 5 stars ( 2 )

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LM487 LED Turn Signal Flasher

Part Number: DOD-DD4013

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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EP29 LED Turn Signal Flasher

Part Number: DOD-DD4007

Not Yet Reviewed

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Relays, 9-16 V, OEM-style, LED Turn Signal Flasher, Exterior Blade Terminals, 2-6 Lamps, EP26, Jeep, Each

Part Number: DOD-DD4004

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Relay, 12 V, 40 amps, Spade Terminal Type, Wiring Harness, Kit

Part Number: RFW-BR15

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Relays, 9-16 V, OEM-style, LED Turn Signal Flasher, Interior Blade Terminals, CF18 (LM449), Lexus, Pontiac, Scion, Subaru, Toyota, Each

Part Number: DOD-DD4003

Not Yet Reviewed

Estimated Ship Date: Jan 22, 2026 if ordered today

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Estimated Ship Date: Jan 22, 2026 if ordered today

LM470 LED Turn Signal Flasher

Part Number: DOD-DD4011

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

LM526 LED Turn Signal Flasher

Part Number: DOD-DD4014

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

EP28 LED Turn Signal Flasher

Part Number: DOD-DD4006

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Relay, 12 V, 30 amps, Spade Terminal Type, Each

Part Number: RNB-84601

Not Yet Reviewed

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Starter Relay, 12 V, Spade Terminal, Harley-Davidson®, Each

Part Number: ALM-40116

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Relay, Turn Signal, 12 V, 3 Blade Terminals, OE-Style with Modern Electronics, Volkswagen, Each

Part Number: URO-001590

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Relay, Pulse Wiper, 12 V, OE-Style with Modern Electronics, Volkswagen, Each

Part Number: URO-001565

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Turn Signal Flasher, 12 V, 2 Terminals, Harley-Davidson®, Each

Part Number: BKC-22-3740

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Relay, 30 Amp, 12V, 5 Male Terminals, Each

Part Number: SMP-RY116

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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