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

Last Updated - 21/06/2026 Sort By:

Best Choice
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
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
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

£2.70
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
New
12V 6 Pack Relay 5 Pin With Harness Socket 40Amp Flame Retardant Wire Automotive
5 pin SPDT 12V, 40 Amp electrical relay with pre-wired relay socket harness. This relay can be used in 6X Socket wire. T

£11.94
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
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
New
12V 200A 2 PIN 2 STUD HEAVY DUTY STUD RELAY WITH MOULDED BRACKET SPST
Heavy-duty 12V 200A Stud Relay with 2 Pin / 2 Stud terminals and SPST (Single Pole Single Throw) function. Built with a

£14.99
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
Used
Honda /02-12 Diesel 9-Pin Glow Plugs (Replacement) Relay Bosch 0281003030 4-Zyl.
Genuine9 PinBlack Relay For Diesel CarsGlow Plugs Relay. Honda Civic MK VIII [2005-2016] Hatchback. Honda Civic MK VII [

£29.99
MICTUNING

New
MICTUNING 12V Fuse Relay Switch Harness Set - 30A ATO/ATC Blade Fuse, 5-Pin SPST Automotive Electrical Relays with Heavy
✔Upgraded Version - Automotive relays built in fuse socket with included 30A blade fuse, no need of a separate fuse hold

£17.29
AEDIKO

New
AEDIKO 4pcs Relay Module DC 12V Relay Board 1 Channel with Optocoupler Isolation Support High or Low Level Trigger
12V Relay Module: Working Voltage: DC 12V; Maximum Load: AC 250V/10A, DC 30V/10A; Trigger Current of Opto-Isolator: 5mA

£6.99
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
1/2/4/8 Arduino Pi Channel Relay Board Module Selectable High Low 5V 12V 24V
NO: The relay normally open interface, the relay is suspended before the suction, and the short is connected with COM af

£399.99
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

£2.67
New
3 Pin Flasher Indicator Hazard Unit 12v 21w x 4 + (2 x 5w) Max 98w Relay
Flasher Unit 12V. Pin 31 - Earth. 3 Pin Electronic. Pin 49 - Live. Pin 49A - To the indicators.

£11.99
New
12V 40A 5 Pin Relay Universal Automotive Car Boat Bike Rally Motor sport
Working Current: 40A. 1 × JD1912 Automotive Relay (12V 40A). Number of Pins: 5 Pin. Battery circuits. Long Service Life.

£4.20
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 40A 4 Pin Relay Universal Automotive Car Boat Bike Rally Motorsport
12V 40A 4 Pin Relay Universal Automotive Car Boat Bike. Upgrade your vehicle's electrical system with this12V/24V 40A 5-

£2.85
New
Multi Function RELAY #645 4H0951253A 4 PIN 12V For VW AUDI Q7 A6 A8 SKODA SEAT
Q7 2007-2016. A8 2008-2016. A6 2009-2016. Caddy 2011-2016. Compatible Part Number:4H0951253A, 8D0951253A. Toledo 1992-20

£6.99
New
12V 40A 4pin Car Auto Automobile Relay Sealed Waterproof Integrated Wired b
Type: 12V 4Pin/5Pin 24V 4Pin/5Pin(optional). Excellent Sealed Performance. Pins: 4 Pin. Color: Black.

£6.58
Used
Renault Trafic Primastar Vivaro 4Pin (Replacement) Relay 8200263342 29200041 20A
Renault Trafic Nissan Primastar Vauxhall Vivaro 4-Pin Brown Relay 8200263342 29200041 20A. Vauxhall Vivaro (2001 - 2014)

£5.99
New
Control Relay 449 for VW AUDI SEAT SKODA - 1K0951253
It replaces part number 1K0951253. Always check your part number 1K0951253 and relay number 449 before ordering. Health

£10.99

25 Relays deals are available from: Amazon, eBay stores, starting from £2.67.
The biggest discount we found is 3% on QitinDasen 5 Pieces 5 Pin Car Relay, 12V 40A SPDT Automotive Relay with Harness Socket and 14/16 AWG Pre-Wired, for Car Truck Boat (Black) at Amazon.
The lowest price we found is £2.67 while the highest is £399.99.
Prices for the best Relays deals average at £25.20.
Last updated on June 21, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Relays.