Automotive Unions and Connectors for Coolant, Fuel and Heater Hoses

Browse our range of high-quality aluminium and nylon unions designed to connect coolant, fuel, and heater hoses. This collection includes straight, 90°, and T-piece connectors in a variety of sizes — perfect for reliable plumbing in engine bays, heating systems and fuel lines.

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Latest Products

Instrument Voltage Stabiliser
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Instrument Voltage Stabiliser

Instrument Voltage Stabiliser
£24.00
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Electric Vacuum Pump Relay
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Electric Vacuum Pump Relay

12 volts.
£9.60
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£9.60
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Classic Style Paper Covered Aluminium Ducting 80mm I.D. - Car Builder SolutionsClassic Style Paper Covered Aluminium Ducting 30-100mm
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Classic Style Paper Covered Aluminium Ducting 30-100mm

SOLD BY THE METRE
£8.40
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£8.40
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G Clamps 50mm to 200mmG Clamps 50mm to 200mm
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G Clamps 50mm to 200mm

G Clamps
£4.20
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£4.20
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Single Relay Plug with Terminals

Single Relay Plug with Terminals

Durable 5-terminal relay plug with 1/4" female crimp terminals for secure connections in automotive/electrical applications. Easy installation, reliable performance.
£3.00
£0.00
£3.00
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Brake and Clutch Reservoir Bleeding Adapter

Brake and Clutch Reservoir Bleeding Adapter

RESERVOIR BLEEDING ADAPTER
£19.20
£0.00
£19.20
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3 Piece Locking Clamping Pliers Set For Flexible Hoses3 Piece Locking Clamping Pliers Set For Flexible Hoses

3 Piece Locking Clamping Pliers Set For Flexible Hoses

Will clamp between 6mm and 57mm hose.
£7.20
£0.00
£7.20
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3 Watt LED White/Red Rechargeable Headband Lamp

3 Watt LED White/Red Rechargeable Headband Lamp

USB charging cable included Up to 3 hours battery life
£7.80
£0.00
£7.80
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Demist Vent 87mm x 14mmDemist Vent 87mm x 14mm

Demist Vent 87mm x 14mm

ABS demist vent, 87mm x 14mm, fits 71mm x 8mm hole. Ideal for boats and caravans. Clears condensation.
£6.00
£0.00
£6.00
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Silver Chrome Paint AerosolSilver Chrome Paint Aerosol

Silver Chrome Paint Aerosol

This plated finish paint aerosol delivers a brilliant, very shiny silver finish. Easy to apply and perfect for various projects.
£13.20
£0.00
£13.20
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Large Internal Naca Duct Black 270mmLarge Internal Naca Duct Black 270mm

Large Internal Naca Duct Black 270mm

Can be bonded or riveted to body.
£19.20
£0.00
£19.20
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Naca Duct Internal Carbon Effect Small

Naca Duct Internal Carbon Effect Small

Can be bonded or riveted to body. 180mm x 145mm x 25mm high
£14.40
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£14.40
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Naca Duct Internal Carbon Effect Large

Naca Duct Internal Carbon Effect Large

Can be bonded or riveted to body. 235mm x 190mm x 45mm high.
£16.80
£0.00
£16.80
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360mm LED Interior Strip Light360mm LED Interior Strip Light

360mm LED Interior Strip Light

Overall size. 30mm x 23mm x 11mm high.
£30.00
£0.00
£30.00
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440 Amp Jump Start Posts

440 Amp Jump Start Posts

SOLD AS A PAIR
£24.00
£0.00
£24.00
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Fuel Tank Pick Up Pipes
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Fuel Tank Pick Up Pipes

Fuel tank pick up pipes
£24.00
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£24.00
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Smiths GPS Speed Sensor for Electronic SpeedometersSmiths GPS Speed Sensor for Electronic Speedometers

Smiths GPS Speed Sensor for Electronic Speedometers

Smiths GPS Speed Sensor for Electronic Speedometers
£162.00
£0.00
£162.00
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Smiths Inductive Speed Sensor for Electronic SpeedometersSmiths Inductive Speed Sensor for Electronic Speedometers

Smiths Inductive Speed Sensor for Electronic Speedometers

Smiths Inductive Speed Sensor for Electronic Speedometers
£86.40
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£86.40
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Copper Brake Pipe 22G 25Ft Roll

Copper Brake Pipe 22G 25Ft Roll

High-quality copper/nickel brake pipe in 3/16". Rated to 215 Bar, ensuring reliable braking performance.
£15.00
£0.00
£15.00
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Copper/Nickel Brake Pipe 22G 25Ft Roll

Copper/Nickel Brake Pipe 22G 25Ft Roll

High-quality copper/nickel brake pipe in 3/16". Rated to 215 Bar, ensuring reliable braking performance.
£21.60
£0.00
£21.60
(-0%)

Engine Oil

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MOBIL Mobil 1 0W-20 Advanced Full Synthetic Engine Oil

Advanced full synthetic 0W20 motor oil. Optimised for fuel economy and long-lasting engine protection in hybrid vehicles.
£13.96
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CASTROL EDGE 0W-30 A5/B5 Engine Oil

Advanced 0W-30 motor oil boosts engine performance and fuel economy. Trusted by experts for ultimate protection and efficiency.
£13.96
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£13.96
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CASTROL EDGE 5W-40 Fully Synthetic Engine Oil

Advanced full synthetic engine oil for maximum performance and protection. Improves fuel economy and exceeds industry standards.
£13.96
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MOBIL Super 1000 X1 15W-40 Engine Oil

High-performance 15W40 motor oil. Provides excellent engine cleanliness, high-temperature protection, and wear protection. Suitable for various vehicles.
£33.95
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£33.95
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CASTROL Magnatec 10W-40 A/B Engine Oil

Advanced engine oil with DUALOCK molecules for non-stop protection and reduced warm-up wear. ACEA A3/B4, API SP.
£9.95
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MOBIL Super 2000 X1 10W-40 Engine Oil

High-performance 10W40 motor oil offering superior engine protection, sludge prevention, and cleanliness. Meets various industry standards.
£7.96
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CASTROL Magnatec 5W-30 A5 Engine Oil

Advanced engine oil with DUALOCK technology for superior protection during warm-up and stop-start driving. Suitable for modern vehicles.
£10.96
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CASTROL GTX 5W-30 RN17 Engine Oil

5W-30 RN17 engine oil. Superior sludge protection and advanced viscosity and thermal breakdown protection. Extends engine life.
£9.95
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  • Stainless Steel 3/8" UNF Male Brake Union - Car Builder SolutionsStainless Steel 3/8" UNF Male Brake Union - Car Builder Solutions

    Stainless Steel 3/8" UNF Male Brake Union

    Durable stainless steel 3/8" UNF male brake union for 3/16" copper/nickel brake pipe. Secure, leak-free connection. 21.5mm length.
    £4.32
    £0.00
    £4.32
    (-0%)
  • Brass Union 7/16" UNF MALE to 3/8" UNF Female - Car Builder SolutionsBrass Union 7/16" UNF MALE to 3/8" UNF Female - Car Builder Solutions

    Brass Union 7/16" UNF MALE to 3/8" UNF Female

    Concave seat in female end.
    £9.00
    £0.00
    £9.00
    (-0%)
  • A/C Union #6 90 Degree - Car Builder Solutions

    A/C Union #6 90 Degree

    A robust 90-degree A/C union for connecting refrigeration lines, ensuring a secure, leak-free connection.
    £7.20
    £0.00
    £7.20
    (-0%)
  • In-Line Connector 3/8" UNF Female to 3/8" UNF Female - Car Builder Solutions

    In-Line Connector 3/8" UNF Female to 3/8" UNF Female

    Solid brass 3/8" UNF female connector union, ideal for various plumbing applications. Durable and reliable.
    £3.60
    £0.00
    £3.60
    (-0%)
  • In-Line Connector M10 Female - Car Builder Solutions

    In-Line Connector M10 Female

    M10 female in-line connector, secure, reliable, leak-free, easy installation. Perfect for various applications.
    £1.80
    £0.00
    £1.80
    (-0%)
  • Stainless Steel M10 Bulkhead 90 Degree Brake Union - Car Builder Solutions

    Stainless Steel M10 Bulkhead 90° Brake Union

    Durable stainless steel M10 90° bulkhead brake union for secure and leak-free brake line connections.
    £10.80
    £0.00
    £10.80
    (-0%)
  • A/C Union #6 Straight - Car Builder Solutions

    A/C Union #6 Straight

    Reliable A/C union #6 straight connector for seamless, leak-proof connections in refrigeration systems.
    £7.20
    £0.00
    £7.20
    (-0%)
  • Brass Union M12 x 1 Male to M10 x 1 Female - Car Builder Solutions

    Brass Union M12 x 1 Male to M10 x 1 Female

    Concave seat in female end.
    £9.00
    £0.00
    £9.00
    (-0%)
  • 7/16" Brass Tube Nut Female - Car Builder Solutions7/16" Brass Tube Nut Female - Car Builder Solutions

    7/16" Brass Tube Nut Female

    A durable brass compression tube nut for connecting 6mm or 1/4" copper pipes with a secure female flare fitting.
    £1.80
    £0.00
    £1.80
    (-0%)
  • In-Line Connector M10 x 1 Male - Car Builder Solutions

    In-Line Connector M10 x 1 Male

    M10 x 1 male in-line connector, 29.5mm long with 13mm threads. Durable, precise, compact and versatile.
    £1.20
    £0.00
    £1.20
    (-0%)
  • A/C Union #8 90 Degree - Car Builder Solutions

    A/C Union #8 90 Degree

    A/C Union 90 Degree #8 for secure, leak-free connection of refrigerant lines. Durable and easy to install for long-lasting HVAC performance.
    £8.40
    £0.00
    £8.40
    (-0%)
  • 7/16" UNF Brass Tube Nut Female For 3/16" Tube - Car Builder Solutions7/16" UNF Brass Tube Nut Female For 3/16" Tube - Car Builder Solutions

    7/16" UNF Brass Tube Nut Female For 3/16" Tube

    Durable brass 7/16" UNF tube nut for secure connections with 3/16" tubing. Ideal for various applications.
    £1.80
    £0.00
    £1.80
    (-0%)
  • In-Line Connector 3/8" UNF Female - Car Builder Solutions

    In-Line Connector 3/8" UNF Female

    A 3/8" UNF female in-line connector, ideal for joining 3/16" copper or copper/nickel pipes securely.
    £1.80
    £0.00
    £1.80
    (-0%)
  • In-Line Connector 3/8" UNF Male - Car Builder Solutions

    In-Line Connector 3/8" UNF Male

    Durable 3/8" UNF male connector joins 3/16" copper/nickel pipes. 30mm long, 12.5mm thread depth. Easy installation, versatile use.
    £1.20
    £0.00
    £1.20
    (-0%)
  • Brass Union 3/8" UNF Male to M10 x 1 Female - Car Builder Solutions

    Brass Union 3/8" UNF Male to M10 x 1 Female

    Concave seat in female end.
    £9.00
    £0.00
    £9.00
    (-0%)
  • In-Line Connector 3/8" UNF Male to 3/8" UNF Male - Car Builder Solutions

    In-Line Connector 3/8" UNF Male to 3/8" UNF Male

    Solid brass 3/8" UNF male connector, 34mm long with 11mm hex, for plumbing and fluid transfer.
    £3.60
    £0.00
    £3.60
    (-0%)
  • Stainless Steel M10 x 1 Female Brake Union - Car Builder SolutionsStainless Steel M10 x 1 Female Brake Union - Car Builder Solutions

    Stainless Steel M10 x 1 Female Brake Union

    Durable stainless steel M10 x 1 female brake union for 3/16" copper/nickel brake pipe. 17mm length, 14mm hex. Sold individually.
    £4.32
    £0.00
    £4.32
    (-0%)
  • Stainless Steel 3/8" UNF Female Brake Union - Car Builder SolutionsStainless Steel 3/8" UNF Female Brake Union - Car Builder Solutions

    Stainless Steel 3/8" UNF Female Brake Union

    Durable stainless steel 3/8" UNF female brake union for 3/16" copper/nickel brake pipes. 17mm length, corrosion-resistant.
    £4.32
    £0.00
    £4.32
    (-0%)
  • A/C Union #10 90 Degree - Car Builder Solutions

    A/C Union #10 90 Degree

    Durable 90-degree A/C union fitting for reliable, leak-free connection of #10 air conditioning lines.
    £10.80
    £0.00
    £10.80
    (-0%)
  • Brass 3/8" UNF Half Nut - Car Builder Solutions

    Brass 3/8" UNF Half Nut

    Durable brass half nut for BUBH38 brake bulkhead union. 3/8" UNF thread, 5mm thick, 7/16" hex for easy fitting.
    £1.20
    £0.00
    £1.20
    (-0%)
  • In-Line Connector M10 Female to M10 Female - Car Builder Solutions

    In-Line Connector M10 Female to M10 Female

    Durable brass M10 female to female connector. 30mm long with a 14mm hex for easy installation.
    £3.60
    £0.00
    £3.60
    (-0%)
  • Brass In-Line Connector 7/16" unf Male Male - Car Builder SolutionsBrass In-Line Connector 7/16" unf Male Male - Car Builder Solutions

    Brass 7/16" UNF Male/Male Connector

    Durable brass 7/16" UNF male connector. 43mm long with 1/2" hex for easy installation. Reliable and leak-free.
    £4.80
    £0.00
    £4.80
    (-0%)
  • Brass 3/8" UNF Female Blanking cap - Car Builder SolutionsBrass 3/8" UNF Female Blanking cap - Car Builder Solutions

    Brass 3/8" UNF Female Blanking cap

    Seal unused 3/8" UNF male connections with this durable brass blanking cap. Features an 11mm thread depth for a secure, reliable seal.
    £2.40
    £0.00
    £2.40
    (-0%)
  • Steel Brake Bleed Screw 3/8" UNF - Car Builder SolutionsSteel Brake Bleed Screw 3/8" UNF - Car Builder Solutions

    Steel Brake Bleed Screw 3/8" UNF

    Durable steel brake bleed screw, 3/8" UNF thread, ensures effective brake bleeding and reliable performance. Easy installation.
    £1.20
    £0.00
    £1.20
    (-0%)
  • Stainless Steel M10 Male 'T' Block With Mounting Tab - Car Builder SolutionsStainless Steel M10 Male 'T' Block With Mounting Tab - Car Builder Solutions

    Stainless Steel M10 x 1 Male 'T' Block With Mounting Tab

    A durable stainless steel T-block with M10 x 1 male thread and mounting tab, perfect for secure connections.
    £16.80
    £0.00
    £16.80
    (-0%)

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