Best Relays Deals Online in the UK (25 Deals Found)

Last Updated - 19/06/2026 Sort By:

Best Choice
Gebildet

New
Gebildet 2pcs JD1912 Car Relay Harness 12V 40A 4 Pin SPST 12AWG Harness Sockets with Built-in Diode for Automotive Truck
Integrated Diode: Each relay includes a built-in diode that suppresses induced voltage during switching, safeguarding yo

£7.99
Best Value
QitinDasen

New
QitinDasen 5 Pieces 5 Pin Car Relay, 12V 40A SPDT Automotive Relay with Harness Socket and 14/16 AWG Pre-Wired, for Car
Professional 5 pin automotive relay with SPDT design (Single Pole Double Throw) capable of opening or closing a circuit.

£14.99 £15.49
New
12V 40A 4 Pin Relay Universal Automotive Car Boat Bike Rally Motorsport
Working Current: 40A. 1 × JD1912 Automotive Relay (12V 40A). Number of Pins: 5 Pin. Battery circuits. Automotive wiring

£2.99
Ollanoos

New
Ollanoos 10 Pack JD1914 12V 40A 5 Pin SPDT Electrical Relays, Starter Switch Relays for Automotive Truck Motorcycle Boat
High Switching Capability: High current switching capability of 30A and 40A for a wide range of high load applications,

£14.99
New
New Honda Civic (06-16) Mitsuba Air Condition A/C Compressor Relay 39794-SDA-A05
Honda/ Acura 4-Pin Black Micro Relay Mitsuba 7001-5516 12VDC. Part Number:Mitsuba 70015516. Interchangeable Part Number:

£6.99
SHUNYABEI

New
2Pcs JD1912 Automotive Relay Switch & Starter 12V 40A SPST 4-Pin for Heavy Duty Cars, Trucks, Motorcycles, Boats (Black)
Package Includes :You will get 2Pcs JD1912 4 pin 12V/40A SPST Automotive Relay

£7.00
TIANXUAN

New
12V Fuse Automotive Relay Switch Harness Set Gebildet 30A Ato Atc Blade Fuse 4 Pin Spst Automotive Electrical Relays wit
Upgraded Design with Built-in Fuse: Includes 30A ATO/ATC blade fuse integrated into the 12v relay socket, eliminating th

£7.99
Used
Audi / Volkswagen Multi-Use Relay No.370 4-Pin 8D0951253 Genuine #297B
OEM Part number : 8D0951253. For sale is Genuine Audi / Volkswagen multi use 4 pin relay No. 370.

£6.99
20% Off
Qaum

New
2 Packs 12v Fuse Relay Switch Harness Set with 30a Ato Atc Blade Fuse, 4-Pin Spst Automotive Electrical Relays with Heav
Colour-marked cables for one-step wiring: Each 4 pin relay 12v 30a wire is clearly marked with colour to make installati

£6.87 £8.59
New
Multi Use Function Relay 5 Pin - 646 / 404 - VW Audi Seat Skoda 4H0951253C
Multi-Function 5 Pin Relay – 646 / 404 – VW Audi Seat Skoda – 4H0951253C. It is compatible with part number4H0951253C al

£10.99
AEDIKO

New
AEDIKO 4pcs Relay Module DC 5V 1 Channel Relay Board with Optocoupler Isolation Support High or Low Level Trigger
5V Relay Module: Working Voltage: DC 5V; Maximum Load: AC 250V/10A, DC 30V/10A; Trigger Current of Opto-Isolator: 5mA

£6.99
JUUDDENPARTS

New
JUUDDENPARTS 10Pcs Motor Relay Car Fuse Relay, 5 Pin 24V 40A 28VDC JD2912-1Z-24VDC, Boat Truck Van Vehicle Automotive Co
Replace Part Number: JD2912-1Z-24VDC

£17.99
New
12V Automotive On/Off Fused Relay 30A 4-Pin with Holder Socket Auto Cars UK
Automotive fused SPNO relay with 4-pins and 30A blade fuse to protect the circuit. Includes 30A blade fuse. Excellent sh

£9.99
Gebildet

New
Gebildet 3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotiv
Upgraded Version - Automotive relays built in fuse socket with included 30A blade fuse, no need of a separate fuse holde

£11.99
New
5V 12V 24V 1/2/4/8 Channel Relay Board Module Arduino Raspberry Pi PIC
Active low relay board with 5V, 12V or 24V relays capable of being switched on-off by an opto-isolated digital input. Ea

£35.49
Heschen

New
Heschen PC Board Relay, JQC-3F(T73), DC5V Coil, SPDT, 7A 240VAC, 5 Pin terminals, 5Pack
Coil Voltage: 5VDC

£4.89
New
12V 40A 4 Pin Relay Universal Automotive Car Boat Bike Rally Motorsport
Upgrade your vehicle’s electrical system with thishigh-quality 12V 40A 4-pin relay, perfect forcars, bikes, boats, and m

£2.78
New
12V 40A 4 Pin Relay Universal Automotive Car Boat Bike Rally Motorsport
Working current: 40A. Copper overcurrent protection.

£2.69
New
5 PCS 12V Automotive On/Off Fused Relay 30A 4-Pin with Holder Socket NEW
Automotive fusedSPNO relay with 4-pins and 30A blade fuse to protect the circuit. Includes 30A blade fuse. Excellent sho

£12.59
New
12V Relay 4 Pin 30Amp Sealed for switching Lights Horn etc Car Bike Van SPNO
Automotive Relay for switching Lights etc on a Car, Bike or Van. They are ideal for a discreet switching solution for po

£6.99
New
12V Relay 5 PIN Automotive 30 / 40AMP 30a 40a Changeover RY14 Detachable
Changeover Relay with detachable bracket. Relay 5-pin 12v 30/40A. Product shown in main image is exactly what you will r

£8.99
New
12V 40A 4 Pin Relay Universal Automotive Car Boat Bike Rally Motorsport
Keep your vehicle's electrical accessories running safely and reliably with this 12V 40A automotive relay and wiring soc

£2.91
New
5 Pin Car Relay, 12V 40A SPDT Automotive Relay with Harness Socket and 14/16 AW
The 5 Pin Car Relay is a 12V 40A SPDT Automotive Relay with Harness Socket and 14/16 AW. It is designed for automatic op

£10.97
New
12V 47W 3 Pin Electronic Flasher Unit Relay Classic Car AUSTIN JAGUAR MG TRIUMPH
12V 47W electronic flasher unit automotive relay for classic cars, Austin, Fiat, Jaguar, Lancia, Lotus, MG, Morris, Rove

£8.99
Used
411-Ford 05-16 Multi-Use 4-Pin Black Relay 6G9T-14B192-AA FoMoCo 4RA007813-07
Make :FoMoCo. Genuine4-Pin Black Multi Use Relay. Number Of PIN:4 PIN. Ford Almost All Models (2005 - 2016). Ford Part N

£7.99

25 Relays deals are available from: Amazon, eBay stores, starting from £2.69.
The biggest discount we found is 20% on 2 Packs 12v Fuse Relay Switch Harness Set with 30a Ato Atc Blade Fuse, 4-Pin Spst Automotive Electrical Relays with Heavy Duty 12 Awg Wires for Car Truck Boat Vehicle, Interlocking Mount at Amazon.
The lowest price we found is £2.69 while the highest is £35.49.
Prices for the best Relays deals average at £9.60.
Last updated on June 19, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Relays.