What is the construction and purpose of automotive electrical relays?

Automotive electrical relays are elements controlling current flow in the vehicle's installation. A typical relay consists of a housing, a coil, power contacts, and pins with a specific layout, and its location is usually in the fuse box or engine compartment. The task of this component is to separate the control circuit from the circuit powering a device with a higher current draw.

What are automotive electrical relays used for?

Relays are used to switch electrical receivers on and off without overloading switches, the ignition switch, or the controller. They enable the operation of systems such as the starter, fuel pump, wipers, radiator fan, or window heating. Without a properly selected relay, the circuit may operate unstably, and connectors and wires are more exposed to overheating.

What is the construction and function of a relay socket?

A relay socket is a part of the installation where the relay is seated and to which power and control wires are routed. It consists of a body and contacts corresponding to the pin layout of a given relay. Its function is to ensure a secure electrical connection, proper seating of the component, and easy removal during diagnostics or replacement.

How to choose a relay for a specific car?

It is best to compare the OEM number, interchangeable numbers, pin layout, installation voltage, and current capacity. It is also worth checking the car brand, engine version, mounting location, and type of electrical box. If the part has a specific housing color or non-standard marking, these features also help avoid mistakes.

What symptoms indicate wear or damage to a relay?

Typical symptoms include no response from the receiver, random switching of the device, excessive heating of the housing, or characteristic clicking without the system working. Sometimes the fault manifests only under load when the contacts are burnt or weakened. In diagnostics, it is also worth checking the fuse, power on the pins, and the condition of the socket.

What should be paid attention to when installing a relay?

Before installation, verify the compliance of pin markings and the direction of seating in the socket. It is also important to clean the contacts, check the wires, and ensure that the circuit has no short circuit or excessive current draw. Proper installation should not require harness modifications if the part has been selected according to the OEM number and vehicle version.

Car electrical relays

At Global Parts, we offer a wide selection of original used car parts, including relays for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. The relays we offer undergo quality control to ensure you receive a top-quality product.

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Mercedes W176 W204 W207 W166 Relay 4 Pin Grey Hella A0025428719

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 34F231301

Fiat Ducato Omron Lancia Fiat Alfa Relay 12V 10/20A 34F231301

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. DH22-14B192-CA

Range Rover Evoque L538 Relay 4-Pin Unit 12V 40A Black DH22-14B192-CA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 702500E016

Fiat Ducato Mopar 12V 30A Relay 702500E016 1/11308/85 702500

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7N0937503A-1

Audi Q3 8U VW Scirocco Mk3 Relay Bracket Holder Box 7N0937503A

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0035420819

Mercedes W176 W205 W213 W242 W447 W907 Relay 4-Pin Black Tyco Unit A0035420819

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 191906383C-1

Audi VW Volkswagen Seat Skoda Relay Unit Module 4 Pins 191906383C

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. DH22-14B192-EA-2

Land Rover Discovery Sport L550 Relay 4-Pin 12V 70A Grey Set X2 DH22-14B192-EA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0025428819-1

Mercedes W176 W246 Relay Current 4 Pin 12V Hella A0025428819 Set x2

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 431951253D

Audi TT 8N Relay Unit Module 431951253D

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0019820823

Mercedes Sprinter W907 4-Pin Relay V23074-H1605-X123 A0019820823

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 038907281D-1

Genuine VW Audi Seat Skoda Diesel Glow Plug Relay Unit Black 038907281D

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 056800-2120

Ford Ranger Mk4 Relay Control Unit 12V Green Z5A1 056800-2120

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 431951253G

Audi S8 A8 D3 Relay Control Module Unit Purple 381 4 Pins 431951253G

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0035420219-1

Relay Mercedes W639 W906 5-Pin Black 12V 20A A0035420219 Set X2

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5M5T-14B192-AA

Land Rover Jaguar Ford 4-Pin Multi Use Black Relay 20A 5M5T-14B192-AA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. DH22-14B192-DA

Land Rover Discovery Sport L550 Relay 5-Pin Unit 12V 40A Black DH22-14B192-DA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5M5T14B192AA-1

Ford Transit Custom Mk8 Relay 4-Pin Black 12V 20A SET X2 5M5T-14B192-AA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 0332019151-1

Porsche Cayman 987 Kia Sportage Fuel Pump Multifunction Relay Set 0332019151

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0025427219-1

Mercedes W169 W245 W204 W212 Relay 4-Pin Black Hella SET A0025427219

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6G9T-14B192-CA-1

Ford Fiesta Transit Mk7 Relay 4-Pin Black FoMoCo Unit SET X2 6G9T-14B192-CA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 1K0951253-1

VW Volkswagen Audi Seat Relay 449 12V 30A Unit Module 4 Pins 1K0951253

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0035420019

Mercedes W204 Battery Relay Fuse Control Unit Module A0035420019

€70.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5M5T-14B192-AA-1

Ford Transit Mk8 Relay 4-Pin Black 12V 20A SET X2 5M5T-14B192-AA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 443937105B-1

Volkswagen Audi Skoda Seat Thermal Fuse Relay Amp 15A 12V 443937105B

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5M5T-14B192-DA

Land Rover Freelander L359 Relay 4-Pin Black 12V 40A FOMOCO 5M5T-14B192-DA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6977982-2

Mini Cooper R50 R53 R56 R57 R60 Relay No Contact Taubenblau Blue Set 2X 6977982

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. AH42-14B192-AA

Land Rover Freelandr L359 Relay 4-Pin Black 12V 20A Unit AH42-14B192-AA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6977982-3

Mini Cooper R50 R53 R56 R57 R60 Relay No Contact Taubenblau Blue Set 4X 6977982

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 1K0951253A-1

Volkswagen Audi Seat Skoda Glow Plug Relay Unit 4 Pin Black 460 1K0951253A SET

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5M5T14B192AA

Ford Transit Custom Mk8 Relay 4-Pin Black 12V 20A 5M5T-14B192-AA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8353447

BMW E36 E38 Relay Two Pole Make Contact 8353447

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0025428719-1

Mercedes W176 W204 W207 W166 Relay 4 Pin Grey Hella SET X2 A0025428719

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 1K0951253A

VW Audi Seat Skoda Glow Plug Relay Unit Engine Supply Black 4 Pins 1K0951253A

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0005440456

Mercedes W163 Green Relay 2-Pin ML350 112970 3.7 Petrol 245HP A0005440456

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0009828323

Mercedes W176 W246 Power Relay Control Module 5 Pin 12V A0009828323

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8D0951253

Audi Q7 4L Relay Unit Module 4 Pins 8D0951253

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 0-727-43

DURITE 12V Smart Programmable Voltage Sensitive Split Charge Relay 0-727-43

€42.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. DH22-14B192-CA-1

Range Rover Evoque L538 Relay 5-Pin Unit 12V 40A Grey DH22-14B192-CA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0025428919-1

Mercedes W176 W246 Relay 5-Pin Yellow Hella 12V SET X2 A0025428919

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0035421019

Relay Mercedes C117 GLA X156 ML W166 W176 W246 5 Pins Yellow A0035421019

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0009828223

Mercedes W213 Power Relay 4 Pin 12V Hella A0009828223

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 51888255

Fiat Doblo Mk1 Stilo 192 Diesel Glow Plug Relay Pre-Heating Control ECU 51299012

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8Z0951253

Skoda Octavia II 5 Pin Black Relay Control Module Unit Set Kit 8Z0951253

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 0332209150

Range Rover Sport L320 Relay 4-Pin Unit Bosch 12V 20/30A Black 0332209150

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6939890

BMW E87 E81 E92 Relay Plug Control Module Unit Wiring 6939890

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6938213

BMW E90 LCI Door Wiring Loom Wire Cable Harness Front Right O/S 6938213

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 702500

Citroen Relay Peugeot Boxer III Iveco Daily Relay MOPAR 12V 30A 702500

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 93BG-14N089-C1B

Range Rover Sport L320 Glow Plug Relay 12V 70A 2.7 TDV6 93BG-14N089-C1B

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0009827723

Fuse Relay Mercedes W176 W204 W246 4-Pin Unit Black Hella A0009827723

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. BJ32-14B192-CA

Range Rover Evoque L538 Brown Relay 40 AMP BJ32-14B192-CA V23134-B152-X514

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. CC1112B533AB

Ford Transit MK7 Diesel Glow Plug Relay Control Unit Module CC11-12B533-AB

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5293147

Relay Glow Littlefuse Mega Fuse 250 Amp 5293147

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6822250

Mini F55 F56 F57 F60 Cooper S SD Electric Fan Relay Module Unit 6822250

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0025428319

Mercedes W176 W204 C207 W212 C218 W246 Relay 4-Pin Black Hella 12V A0025428319

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5293147-5

Relay Glow Littel Fuse Mega Fuse 80 Amp 5293147

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A7899823500

Mercedes EQA H243 Engine Relay 20A ECU A7899823500

€51.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A6549001300-1

Mercedes W213 C238 Glow Plug Relay Diesel OM654 Preglow Module A6549001300

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8373700-1

BMW E60 E63 E87 E90 E91 2X Relay Make Contact White Green Set 8373700

€24.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4RA007813

Relay Mercedes W204 4-Pin Electrical Relay Black Hella 12V 4RA007813

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6R0919433

VW Volkswagen Audi Seat Skoda Glow Plug Relay Unit Black 505 7 Pins 6R0919433

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1695458140

Mercedes W169 W245 Relay Control Unit Bracket Mount Holder Cover A1695458140

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0005459812

Mercedes Vito W447 W213 OM654 Power Distribution Relay Unit Module A0005459812

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0035420419

Mercedes W177 W205 W247 Relay Fuse Unit Module 4 Pins Black A0035420419

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 443937105B

VW Volkswagen Audi Skoda Seat Little Fuse Amp 30A 12V 443937105A

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8373700-2

BMW E60 E63 E87 E90 E91 4X Relay Make Contact White Green Set 8373700

€25.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 1K0951253-2

VW Volkswagen Audi Seat Relay 449 12V 30A Unit Module 4 Pins 1K0951253 X2

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8373700-3

BMW E60 E63 E87 E90 E91 5X Relay Make Contact White Green Set 8373700

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 1H5951253

Volkswagen Touareg 7L Relay Alternator Alarm Black 4 Pin 12V No 143 1H5951253

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 3Q0951253

Skoda Karoq Mk1 Octavia Mk3 Audi A1 8X Q3 F3 4 Pin Power Relay 3Q0951253

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6Q0951253

Volkswagen Polo Mk4 Passat B7 Additional Brake Light Relay 4 Pin Black 6Q0951253

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 1J0919506K

VW Volkswagen New Beetle Fan Control Module Relay 1J0919506K

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 0332019103

Porsche Cayman 987 Relay Bosch 12v 0332019103

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. V23134-B52-X477

Porsche Cayman 987 Boxster Air Conditioning Control Relay V23134-B52-X477

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 141951253B-5

Porsche Carrera 996 Relay Number 53 Unit Module 4 Pins Set X3 141951253B-5

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5M5T-14B192-EA

Ford Transit Custom Grey Relay 12V 70A 4 Pin ++165271F 5M5T-14B192-EA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8D0951253-1

Audi A4 B6 B7 B8 Q7 4L A6 C7 A8 D4 Multi Use Relay Unit Module 4 Pins 8D0951253

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0035420219-3

Mercedes W639 W906 Relay 5-Pin Control Unit 12A Blue A0035420219

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0015426519

Mercedes C140 Brake Pump Relay Electrical Fuse Module Control Unit A0015426519

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5293147-3

Relay Glow Littlefuse Mega Fuse 250 Amp 5293147

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4B0955531A

Audi VW Volkswagen Seat Relay Unit Module 9 Pins 12V UH2 4B0955531A

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. V23234-A0001-X037

Porsche 718 Boxster 982 Relay 12V 20/30A V23234-A0001-X037

€23.95

Free delivery: Sep 11 – 14

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Part no. 038907282

VW Volkswagen Transporter T5 Spark Plug Glow Plug Relay Module Unit 038907282

€32.95

Free delivery: Sep 11 – 14

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Part no. A0025421219

Mercedes W168 W203 W211 Relay 6-Pin Black Tyco A0025421219

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. DH22-14B192-BA-1

Range Rover Evoque L538 Relay 4-Pin Unit 12V 20A Set x3 DH22-14B192-BA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 11130287

Vauxhall Movano C 4-Pin Relay Unit 12V 50A Omron Black 11130287

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5M5T-14B192-EA-2

Ford Mondeo Focus Multi Use Grey Relay 12V 70A 4 Pin 5M5T-14B192-EA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. DH22-14B192-EA-1

Land Rover Discovery Sport L550 Relay 4-Pin 12V 70A Grey Set X4 DH22-14B192-EA

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8366282-1

BMW Z1 Z3 E32 E36 E38 E46 X5 E53 Connection Plug Golden Brown Set x2 8366282

€23.95

Free delivery: Sep 11 – 14

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Part no. 11131885

Vauxhall 4-Pin Red Relay 12V 30A HFV6-G/12HT-R(265) 11131885

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9802424080

Citroën C4 Grand Picasso Glow Plug Relay Module 8 Pin 9802424080

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. PEO118811

Mazda 6 GJ Relay 4-Pin Electrical Unit Multi-Purpose Relay Black ACVN51212

€23.95

Free delivery: Sep 11 – 14

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Part no. UM4667730

Mazda 6 GJ NAIS Relay Electrical Unit Module 4 Pin 12V Black UM46-67-730 Set x2

€23.95

Free delivery: Sep 11 – 14

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Part no. 4D0907131

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 12V 4D09907131

€23.95

Free delivery: Sep 11 – 14

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Part no. 99361810400

Porsche Carrera 996 Rear Wiper Motor Relay Unit Black 12V 99361810400

€42.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0025428019

Relay Mercedes W176 W246 4-Pin Black Hella 12V A0025428019

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. V23134-J59-X431

Mazda 6 GJ TYCO Relay Black Unit Module 4 Pin 12V V23134-J59-X431

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8X0951253A

VW Crafter SY Skoda Fabia Mk4 5 Pin Switch Relay 12V Number 655 8X0951253A

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0035423019-1

Power Relay Control Mercedes W176 W246 Module 4 Pin 12V 20A SET A0035423019

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

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