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

€42.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 191906383C

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 191906383C

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A0009827723

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0035423019

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8366625

BMW 259 259R 259 R22 Connection Plug Relay Pink Tyco 8366625

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1388911-1

BMW E36 E38 E85 Mini R52 R57 2x Change-Over Contact Relay Violet Set 1388911

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0025422619-3

Relay Mercedes W203 W204 W212 W639 W906 4-Pin Grey Hella 12V A0025422619

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 99661510200

Porsche Boxster 986 Rear Spoiler Control Relay 99661510200

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A0025421419

Mercedes W163 W169 W203 W210 Relay 5-Pin Yellow TYCO A0025421419

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

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

Ford Fiesta Transit Relay 4-Pin Grey FoMoCo Unit 6G9T-14B192-EA SET X2

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 899543000

Porsche Boxster 986 A/C Air Conditioning Relay Control 12V 10A 899543000

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. Q0009857V001

Smart Roadster W452 Heated Seat Control Relay Module 9 Pin Black Q0009857V001

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 443937105B

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

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 6980177

BMW X1 X3 X5 X6 Z4 Z8 Relay Changeover Function Green 6980177

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0025421219

Mercedes W168 W203 W211 Relay 6-Pin Black Tyco A0025421219

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A7899823500

Mercedes EQA H243 Engine Relay 20A ECU A7899823500

€51.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A6549001300-1

Mercedes W213 C238 Glow Plug Relay Diesel OM654 Preglow Module A6549001300

€32.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8K0951253

Audi VW Volkswagen Seat Relay 643 Unit Module 4 Pins 8K0951253

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0951253-1

Audi VW Volkswagen Seat Relay 643 Unit Module 4 Pins Set X2 8K0951253

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 431951253D

Audi TT 8N Relay Unit Module 431951253D

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009821923-1

Mercedes W205 Interior Trunk Fuse Box Automotive Pink Relays Set A0009821923

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8373700

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

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 4H0951253A-1

Seat Skoda Audi VW Polo Multi Use Control Relay 4 Pin 645 4H0951253A SET X2

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 5M5T14B192EA

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO 5M5T14B192EA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 0332019103

Porsche Cayman 987 Relay Bosch 12v 0332019103

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5M5T14B192CA

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO SET 5M5T14B192CA

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A0035422319

Mercedes W176 W246 Relay Battery Decoupling 12V A0035422319

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1388911-2

BMW E36 E38 E85 Mini R52 R57 4x Change-Over Contact Relay Violet Set 1388911

€28.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A0025428819

Mercedes W176 W246 Relay Current 4 Pin 12V Hella A0025428819

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009828223

Mercedes W213 Power Relay 4 Pin 12V Hella A0009828223

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0025422519

Mercedes W168 W169 W245 Blue Relay 4-Pin Tyco A0025422519

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1472984

Mini R50 R52 R53 R55 R56 R57 R58 R59 R60 R61 5-Pin Black Relay Wiper 1472984

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4709820700

Mercedes W470 Glow Plug Relay Module Unit A4709820700

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5293147-3

Relay Glow Littlefuse Mega Fuse 250 Amp 5293147

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6977982

Mini Cooper R50 R56 R57 R60 Relay No Contact Taubenblau 6977982

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0035421619

Mercedes W177 Relay 052 Engine Fuse Box Relay Slot B D E 70A Tyco A0035421619

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 038907282

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

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0025421119

Mercedes W163 W168 W203 W211 Relay 4-Pin Black Hella A0025421119

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6G9T-14B192-EA

Ford Fiesta Transit Relay 4-Pin Grey FoMoCo Unit 6G9T-14B192-EA

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 5M5T-14B192-BA

Land Rover Discovery 4 L319 Multi Use Control Module Relay 5M5T-14B192-BA Black

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 11130287

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6G9T-14B192-CA

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

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. UM4667730

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 11131885

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0035422819

Battery Relay Mercedes W176 W246 W447 Cut Off Module Control Unit A0035422819

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 99361810400

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

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8D0951253A

Audi A6 C6 Multi Use Relay Unit Module 4 Pins 373 8D0951253A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 038907281D-2

VW Volkswagen Caddy 2K Audi A4 B9 Glow Plug Relay Unit Black Diesel 038907281D

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009828523

Mercedes W164 Suspension Compressor Relay A0009828523

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A0035420219

Relay Mercedes W639 W906 5-Pin Black 12A A0035420219

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A0025422619-1

Relay Mercedes W203 W204 W212 W639 W906 4-Pin Grey Hella 12V A0025422619

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8353447

BMW E36 E38 Relay Two Pole Make Contact 8353447

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6915327-1

BMW E46 E60 E81 E87 E90 E91 F10 F20 F30 2x Relay Make Contact Sky Blue 6915327

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E0907307C

Audi RS4 B7 4.2 Servotronic Relay Control Unit 8E0907307C

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. GU5T-14B192-GA

Ford Transit Mk8 Relay High Power 4-Pin Black FoMoCo GU5T-14B192-GA 4RA933714

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

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

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO Set X2 5M5T-14B192-EA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0035421019-1

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0035420419

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0951253-1

Audi A3 8P Multi Use Control Module Relay 4 Pin Light Green Unit Set 4H0951253

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7M0951253C

Volkswagen T5 Audi Seat Skoda Relay Black Control Unit 5 Pin 12V 7M0951253C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8507398

Glow Bracket BMW E60 E87 LCI E90 E91 E92 F10 F11 N47 Diesel Relay Plug 8507398

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0951253

VW Volkswagen Audi Seat Relay 449 Unit Module 4 Pins 1K0951253

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0025427419

Mercedes-Benz A B E M W169 W245 W210 W163 Relay 5-Pin Yellow Hella A0025427419

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5M5T-14B192-CA

Range Rover L538 Ford Transit Custom Relay 4-Pin Black 12V 40A 5M5T-14B192-CA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0951253A

Seat Skoda Audi VW Polo 6R Multi Use Control Module Relay 4 Pin 645 4H0951253A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0015426519

Mercedes C140 Brake Pump Relay Electrical Fuse Module Control Unit A0015426519

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0951253C

Seat Skoda Audi VW Polo 6R Multi Use Control Module Relay 4 Pin 646 4H0951253C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8200587119

Renault Trafic III Vauxhall Vivaro B Relay 5-Pin Grey Unit 8200587119

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8D0951253

Audi Q7 4L Relay Unit Module 4 Pins 8D0951253

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DH22-14B192-AA

Land Rover Discovery Sport L550 Relay 4-Pin 20A 12V Unit Black DH22-14B192-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DH22-14B192-BA

Land Rover Discovery Sport L550 Relay 4-Pin Unit 12V 20A Black DH22-14B192-BA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0035421619-1

Mercedes W177 Relay 052 Fuse Box Relay Slot B D E 70A Tyco SET X2 A0035421619

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

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