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$17.99
Bosch Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi, VW
ECS Tuning
$17.99
Bosch Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi, VW
ECS Tuning
$2.99
MTC Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi
ECS Tuning
$2.99
MTC Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi
ECS Tuning
$3.95
Hamburg Tech Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay For Audi, VW
ECS Tuning
$3.95
Hamburg Tech Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay For Audi, VW
ECS Tuning
$7.06
Audi B5 S4 - Bosch Multipurpose Relay - Priced Each: Replacement 4-Pin/30 Amp Relay
ECS Tuning
$7.06
Audi B5 S4 - Bosch Multipurpose Relay - Priced Each: Replacement 4-Pin/30 Amp Relay
ECS Tuning
$8.99
VW MK4 R32 - Vemo Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$8.99
VW MK4 R32 - Vemo Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$11.99
Audi B5 S4 - Flosser Multipurpose Relay - Priced Each: Replacement 4 Pin Relay
ECS Tuning
$11.99
Audi B5 S4 - Flosser Multipurpose Relay - Priced Each: Replacement 4 Pin Relay
ECS Tuning
$13.17
4 Pcs 4 Pin Universal Automotive SPDT Relay DC 12V 30A For Car Fuse Relay Vehicle Motor Switch Power | Harfington
harfington
$13.17
4 Pcs 4 Pin Universal Automotive SPDT Relay DC 12V 30A For Car Fuse Relay Vehicle Motor Switch Power | Harfington
harfington
$5.99
Hamburg Tech Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay For VW, Audi
ECS Tuning
$5.99
Hamburg Tech Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay For VW, Audi
ECS Tuning
$4.99
4-Pin Automotive Relay With Mount Tab - 40A - 12V - Wired Socket Included - Single
Super Bright LEDs
$4.99
4-Pin Automotive Relay With Mount Tab - 40A - 12V - Wired Socket Included - Single
Super Bright LEDs
$15.99
Meistersatz Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi, VW
ECS Tuning
$15.99
Meistersatz Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi, VW
ECS Tuning
$8.80
Audi B8 S4 - Meyle Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$8.80
Audi B8 S4 - Meyle Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$17.99
Vemo Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For VW, Audi
ECS Tuning
$17.99
Vemo Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For VW, Audi
ECS Tuning
$23.77
240-01049 Relay 4 Pin -40 Amp Continous Duty, 12 Volts, 90 Ohms For Bosch 0-332-019-110
DB Electrical
$23.77
240-01049 Relay 4 Pin -40 Amp Continous Duty, 12 Volts, 90 Ohms For Bosch 0-332-019-110
DB Electrical
$11.17
Multi-Purpose Automotive Relay No.9098702027 - Car Horn Relay - 12V 4 Pin For Toyota Plastic Blue - 1 Pc | Harfington
harfington
$11.17
Multi-Purpose Automotive Relay No.9098702027 - Car Horn Relay - 12V 4 Pin For Toyota Plastic Blue - 1 Pc | Harfington
harfington
$43.99
Audi B8 S4 - Genuine Volkswagen Audi Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$43.99
Audi B8 S4 - Genuine Volkswagen Audi Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$12.01
Multi-Purpose Automotive Relay - Car Multi-Purpose Automotive Relay - 12V 70A 4 Pin For Jaguar For Land Rover Plastic Gray - 1 Pc | Harfington
harfington
$12.01
Multi-Purpose Automotive Relay - Car Multi-Purpose Automotive Relay - 12V 70A 4 Pin For Jaguar For Land Rover Plastic Gray - 1 Pc | Harfington
harfington
$26.52
Kioti 70 Amp 4 Prong Relay T5535-69951
Nolt's Power Equipment
$26.52
Kioti 70 Amp 4 Prong Relay T5535-69951
Nolt's Power Equipment
$9.75
2X 4-PIN Relay Black Multi-Purpose Relay 8T2T-14B192-AA For Fusion F-250 F150 Ford Fomoco
Fridayparts.com
$9.75
2X 4-PIN Relay Black Multi-Purpose Relay 8T2T-14B192-AA For Fusion F-250 F150 Ford Fomoco
Fridayparts.com
$20.80
Uxcell 4Pcs JD-2912 4 Pin DC 12V 40A Universal Car Vehicle Motor Fuse Relay Switch Power With Harness | Harfington
harfington
$20.80
Uxcell 4Pcs JD-2912 4 Pin DC 12V 40A Universal Car Vehicle Motor Fuse Relay Switch Power With Harness | Harfington
harfington
$40.00
Audi B5 S4 - Genuine Volkswagen Audi Multipurpose Relay - Priced Each: Replacement 4 Pin Relay
ECS Tuning
$40.00
Audi B5 S4 - Genuine Volkswagen Audi Multipurpose Relay - Priced Each: Replacement 4 Pin Relay
ECS Tuning
$11.20
1 Pcs Automotive 4 Pins Multi-Purpose Relay For Toyota Land Cruiser 2003-2019 No.9098702025 12V 30/40A Black | Harfington
harfington
$11.20
1 Pcs Automotive 4 Pins Multi-Purpose Relay For Toyota Land Cruiser 2003-2019 No.9098702025 12V 30/40A Black | Harfington
harfington
$19.99
Vemo Relay, Part 8DO 951 253: 4-Prong, 12V/70 Amp Relay For VW, Audi
ECS Tuning
$19.99
Vemo Relay, Part 8DO 951 253: 4-Prong, 12V/70 Amp Relay For VW, Audi
ECS Tuning
$6.50
Ols Rtt712a 12V 40A 4-Pin Relay Direct Replacement For 90987-02006 OEM Relay
Walmart
2
Free shipping
$6.50
Ols Rtt712a 12V 40A 4-Pin Relay Direct Replacement For 90987-02006 OEM Relay
Walmart
$2.99
4-Pin Automotive Relay With Mount Tab - 40A - 12V - Single
Super Bright LEDs
$2.99
4-Pin Automotive Relay With Mount Tab - 40A - 12V - Single
Super Bright LEDs
$394.44
$694.44
4 Pin Relay 2-40-001421 - Genuine Replacement Part
eBay
43% off
$394.44
$694.44
4 Pin Relay 2-40-001421 - Genuine Replacement Part
eBay
$13.61
2Pcs Car Relay On/Off Normally Open 4 Pin 12V 80Amp SPST Model JD2912-1H-12VDC 80A 14VDC Automotive Relay Switches | Harfington
harfington
$13.61
2Pcs Car Relay On/Off Normally Open 4 Pin 12V 80Amp SPST Model JD2912-1H-12VDC 80A 14VDC Automotive Relay Switches | Harfington
harfington
$12.19
2Pcs Car Relay 4 Pin 12V 40Amp SPST Model JD2912-1H-12VDC 40A 14VDC Automotive Relay Switches | Harfington
harfington
$12.19
2Pcs Car Relay 4 Pin 12V 40Amp SPST Model JD2912-1H-12VDC 40A 14VDC Automotive Relay Switches | Harfington
harfington
$11.99
4-Pin Automotive Relay With Mount Tab - 40A - 12V - 5-Pack
Super Bright LEDs
$11.99
4-Pin Automotive Relay With Mount Tab - 40A - 12V - 5-Pack
Super Bright LEDs
$13.67
2Pcs Car Relay On/Off Normally Open 4 Pin 24V 80Amp SPST Model JD2912-1H-24VDC 80A 28VDC Automotive Relay Switches | Harfington
harfington
$13.67
2Pcs Car Relay On/Off Normally Open 4 Pin 24V 80Amp SPST Model JD2912-1H-24VDC 80A 28VDC Automotive Relay Switches | Harfington
harfington
$11.97
Multi-Purpose Automotive Relay No.9008087026 - Car Air Conditioner Starter Headlight Horns Fans Relay - 12V 4 Pin For Toyota Prius Plastic Blue - 1 Pc
harfington
$11.97
Multi-Purpose Automotive Relay No.9008087026 - Car Air Conditioner Starter Headlight Horns Fans Relay - 12V 4 Pin For Toyota Prius Plastic Blue - 1 Pc
harfington
$12.33
2 Pcs Car Relay 4 Pin 12V 40Amp SPST Model JD2912-1H-12VDC 40A 14VDC Automotive Relay Switches | Harfington
harfington
$12.33
2 Pcs Car Relay 4 Pin 12V 40Amp SPST Model JD2912-1H-12VDC 40A 14VDC Automotive Relay Switches | Harfington
harfington
$34.99
Mustang 4-Pin SPNO Automotive Purpose Relays 5-Pieces
American Muscle
$34.99
Mustang 4-Pin SPNO Automotive Purpose Relays 5-Pieces
American Muscle
$11.37
Uxcell JD-2912 4 Pin DC 48V 40A Universal Car Vehicle Motor Fuse Relay Switch Power With 4 Harness | Harfington
harfington
36
$11.37
Uxcell JD-2912 4 Pin DC 48V 40A Universal Car Vehicle Motor Fuse Relay Switch Power With 4 Harness | Harfington
harfington
$19.99
4-Pin Automotive Relay With Mount Tab - 40A - 12V - Wired Socket Included - 5-Pack
Super Bright LEDs
$19.99
4-Pin Automotive Relay With Mount Tab - 40A - 12V - Wired Socket Included - 5-Pack
Super Bright LEDs
$25.54
Part 1001240178: JLG RELAY (4-PIN) 20 AMP
ModernEquipmentParts.com
$25.54
Part 1001240178: JLG RELAY (4-PIN) 20 AMP
ModernEquipmentParts.com
$13.86
Uxcell 2Pcs JD-2912 4 Pin DC 12V 40A Universal Car Vehicle Motor Fuse Relay Switch Power With Harness | Harfington
harfington
$13.86
Uxcell 2Pcs JD-2912 4 Pin DC 12V 40A Universal Car Vehicle Motor Fuse Relay Switch Power With Harness | Harfington
harfington
4-Pin Relay Explained: How It Works and How to Wire It
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4-Pin Relay Explained: How It Works and How to Wire It
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YouTubeTA Automotive technology
How An automotive 4 Pin Relay works Explained and why you should use it for upgrades on your vehicle
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5.3K viewsMay 17, 2020
YouTubeMarty's workshop
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319.3K viewsDec 27, 2020
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25K viewsAug 21, 2022
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Shop four-pin relay

Sponsored
About our ads
$17.99
Bosch Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi, VW
ECS Tuning
$17.99
Bosch Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi, VW
ECS Tuning
$2.99
MTC Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi
ECS Tuning
$2.99
MTC Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi
ECS Tuning
$3.95
Hamburg Tech Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay For Audi, VW
ECS Tuning
$3.95
Hamburg Tech Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay For Audi, VW
ECS Tuning
$7.06
Audi B5 S4 - Bosch Multipurpose Relay - Priced Each: Replacement 4-Pin/30 Amp Relay
ECS Tuning
$7.06
Audi B5 S4 - Bosch Multipurpose Relay - Priced Each: Replacement 4-Pin/30 Amp Relay
ECS Tuning
$8.99
VW MK4 R32 - Vemo Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$8.99
VW MK4 R32 - Vemo Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$11.99
Audi B5 S4 - Flosser Multipurpose Relay - Priced Each: Replacement 4 Pin Relay
ECS Tuning
$11.99
Audi B5 S4 - Flosser Multipurpose Relay - Priced Each: Replacement 4 Pin Relay
ECS Tuning
$13.17
4 Pcs 4 Pin Universal Automotive SPDT Relay DC 12V 30A For Car Fuse Relay Vehicle Motor Switch Power | Harfington
harfington
$13.17
4 Pcs 4 Pin Universal Automotive SPDT Relay DC 12V 30A For Car Fuse Relay Vehicle Motor Switch Power | Harfington
harfington
$5.99
Hamburg Tech Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay For VW, Audi
ECS Tuning
$5.99
Hamburg Tech Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay For VW, Audi
ECS Tuning
$4.99
4-Pin Automotive Relay With Mount Tab - 40A - 12V - Wired Socket Included - Single
Super Bright LEDs
$4.99
4-Pin Automotive Relay With Mount Tab - 40A - 12V - Wired Socket Included - Single
Super Bright LEDs
$15.99
Meistersatz Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi, VW
ECS Tuning
$15.99
Meistersatz Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For Audi, VW
ECS Tuning
$8.80
Audi B8 S4 - Meyle Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$8.80
Audi B8 S4 - Meyle Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$17.99
Vemo Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For VW, Audi
ECS Tuning
$17.99
Vemo Multipurpose Relay - Priced Each: Replacement 4 Pin Relay For VW, Audi
ECS Tuning
$23.77
240-01049 Relay 4 Pin -40 Amp Continous Duty, 12 Volts, 90 Ohms For Bosch 0-332-019-110
DB Electrical
$23.77
240-01049 Relay 4 Pin -40 Amp Continous Duty, 12 Volts, 90 Ohms For Bosch 0-332-019-110
DB Electrical
$11.17
Multi-Purpose Automotive Relay No.9098702027 - Car Horn Relay - 12V 4 Pin For Toyota Plastic Blue - 1 Pc | Harfington
harfington
$11.17
Multi-Purpose Automotive Relay No.9098702027 - Car Horn Relay - 12V 4 Pin For Toyota Plastic Blue - 1 Pc | Harfington
harfington
$43.99
Audi B8 S4 - Genuine Volkswagen Audi Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$43.99
Audi B8 S4 - Genuine Volkswagen Audi Multipurpose Relay - Priced Each: Replacement 4-Pin/40 Amp Relay
ECS Tuning
$12.01
Multi-Purpose Automotive Relay - Car Multi-Purpose Automotive Relay - 12V 70A 4 Pin For Jaguar For Land Rover Plastic Gray - 1 Pc | Harfington
harfington
$12.01
Multi-Purpose Automotive Relay - Car Multi-Purpose Automotive Relay - 12V 70A 4 Pin For Jaguar For Land Rover Plastic Gray - 1 Pc | Harfington
harfington
$26.52
Kioti 70 Amp 4 Prong Relay T5535-69951
Nolt's Power Equipment
$26.52
Kioti 70 Amp 4 Prong Relay T5535-69951
Nolt's Power Equipment
$9.75
2X 4-PIN Relay Black Multi-Purpose Relay 8T2T-14B192-AA For Fusion F-250 F150 Ford Fomoco
Fridayparts.com
$9.75
2X 4-PIN Relay Black Multi-Purpose Relay 8T2T-14B192-AA For Fusion F-250 F150 Ford Fomoco
Fridayparts.com