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.

Sidebar

Latest Products

HT Lead Crimping Tool

HT Lead Crimping Tool

HT Lead Crimping Tool
£18.00
£0.00
£18.00
(-0%)
Electronic Voltage Regulator For Smiths InstrumentsElectronic Voltage Regulator For Smiths Instruments

Electronic Voltage Regulator For Smiths Instruments

Electronic Voltage Regulator For Smiths Instruments
£9.60
£0.00
£9.60
(-0%)
Type 1 2 Pin Alternator Plug

Type 1 2 Pin Alternator Plug

Reliable Type 1 alternator plug with two 1/4" female spade terminals, a T-shape layout, and 500mm flyleads.
£2.40
£0.00
£2.40
(-0%)
Brass Compression Union For 3/8" Copper , Nylon or Steel PipeBrass Compression Union For 3/8" Copper , Nylon or Steel Pipe

Brass Compression Union For 3/8" Copper , Nylon or Steel Pipe

Brass compression joiner for 3/8" pipe.
£7.80
£0.00
£7.80
(-0%)
Brass Compression Union For 5/16" Copper , Nylon or Steel PipeBrass Compression Union For 5/16" Copper , Nylon or Steel Pipe

Brass Compression Union For 5/16" Copper , Nylon or Steel Pipe

Brass compression joiner for 5/16" pipe.
£4.80
£0.00
£4.80
(-0%)
Brass Compression Union For 1/4" Copper , Nylon or Steel PipeBrass Compression Union For 1/4" Copper , Nylon or Steel Pipe

Brass Compression Union For 1/4" Copper , Nylon or Steel Pipe

Brass compression joiner for 1/4" pipe.
£4.80
£0.00
£4.80
(-0%)
Telescopic Magnetic Pick-Up and Mirror Tool SetTelescopic Magnetic Pick-Up and Mirror Tool Set

Telescopic Magnetic Pick-Up and Mirror Tool Set

650mm telescopic, stainless steel shaft.
£8.40
£0.00
£8.40
(-0%)
Fire Safety Stick FSS100 – Compact & Mess-Free Fire ExtinguisherFire Safety Stick FSS100 – Compact & Mess-Free Fire Extinguisher

Fire Safety Stick FSS100 – Compact & Mess-Free Fire Extinguisher

The Fire Safety Stick FSS100 is a compact, mess-free fire extinguisher designed for home, vehicle, and multi-industry use. Safe on all major fire classes (including electrical up to 100kV), it leaves zero damaging residue, requires no annual servicing, and features a 15+ year shelf life.
£104.40
£0.00
£104.40
(-0%)
Fire Safety Stick FSS50 – Compact & Mess-Free Fire Extinguisher

Fire Safety Stick FSS50 – Compact & Mess-Free Fire Extinguisher

The Fire Safety Stick FSS50 is a compact, mess-free fire extinguisher designed for home, vehicle, and multi-industry use. Safe on all major fire classes (including electrical up to 100kV), it leaves zero damaging residue, requires no annual servicing, and features a 15+ year shelf life.
£81.00
£0.00
£81.00
(-0%)
Oval Chrome Gear Surround 137mm x 125mm

Oval Chrome Gear Surround 137mm x 125mm

Oval chromed gear surround 137mm x 125mm x 6.2mm
£9.00
£0.00
£9.00
(-0%)
Throttle Spring 100mm with Swivelling Hooks
Out Of Stock

Throttle Spring 100mm with Swivelling Hooks

A durable 100mm throttle spring with swivelling hooks. Made from plated steel, stretches from 100mm to 200mm.
£3.60
£0.00
£3.60
(-0%)
Out Of Stock
Classic Illuminated Column Mount Indicator SwitchClassic Illuminated Column Mount Indicator Switch

Classic Illuminated Column Mount Indicator Switch

A durable column mount indicator switch with green flashing light.
£24.00
£0.00
£24.00
(-0%)
STRETCH OVER CV BOOT CONE FITTING CONE #CVBCONE Car Builder Solutions

Stretch Over CV Boot Fitting Cone

Replace CV boots quickly and easily without disassembly.
£8.40
£0.00
£8.40
(-0%)
Exhaust Repair Putty 250gExhaust Repair Putty 250g

Exhaust Repair Putty 250g

A reliable exhaust putty in a 250g tub. Seals exhaust cracks and splits and withstands temperatures up to 1000ºC.
£4.20
£0.00
£4.20
(-0%)
ELECTRIC WINDOW SWITCH car builder solutionsELECTRIC WINDOW SWITCH car builder solutions

Illuminated Electric Window Switch 3

Easy-to-install electric window switch with a gloss black bezel. Fits panels up to 3mm thick and features five 4.8mm male spade terminals.
£8.40
£0.00
£8.40
(-0%)
MOMO Race 2.0 320mm Steering Wheel Car Builder SolutionsMOMO Race 2.0 320mm Steering Wheel Car Builder Solutions

MOMO Race 2.0 320mm Steering Wheel

Steering Wheel, 320mm, black leather/spoke, enhanced control, made in Italy.
£275.99
£0.00
£275.99
(-0%)
MOMO Race 2.0 350mm Steering Wheel Car Builder SolutionsMOMO Race 2.0 320mm Steering Wheel Car Builder Solutions

MOMO Race 2.0 Steering Wheel

Steering Wheel, 350mm, black leather/spoke, enhanced control, made in Italy.
£275.99
£0.00
£275.99
(-0%)
MOMO GT-50 2.0 Black & Yellow Edition Steering Wheel Car Builder SolutionsMOMO GT-50 2.0 Black & Yellow Edition Steering Wheel Car Builder Solutions

MOMO GT-50 2.0 Black & Yellow Edition Steering Wheel

MOMO GT-50 2.0 Black & Yellow, Edition Steering Wheel, 350mm, black leather/spoke, enhanced control, made in Italy.
£509.99
£0.00
£509.99
(-0%)
MOMO GT-50 2.0 Black Edition Steering Wheel Car Builder SolutionsMOMO GT-50 2.0 Black Edition Steering Wheel Car Builder Solutions

MOMO GT-50 2.0 Black Edition Steering Wheel

MOMO GT-50 2.0 Black Edition Steering Wheel, 350mm, black leather/spoke, enhanced control, made in Italy.
£509.99
£0.00
£509.99
(-0%)
MOMO Corse 2.0 Steering WheelMOMO Corse 2.0 Steering Wheel
Quick Add
Close

MOMO Corse 2.0 Steering Wheel

MOMO Corse 2.0 Steering Wheel steering wheel, 350mm, black leather/spoke, enhanced control, made in Italy.
£293.99
£0.00
£293.99
(-0%)
Quick Add
Close

Engine Oil

mobil-1-advanced-full-synthetic-engine-oil-0w-20-car-builder-solutionsmobil-1-advanced-full-synthetic-engine-oil-0w-20-car-builder-solutions
Quick Add
Close

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
£0.00
£13.96
(-0%)
Quick Add
Close
edge-0w-30-a5-b5-engine-oil-car-builder-solutionsedge-0w-30-a5-b5-engine-oil-car-builder-solutions
Quick Add
Close

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.
£17.95
£0.00
£17.95
(-0%)
Quick Add
Close
super-1000-x1-15w-40-engine-oil-available-in-multiple-sizes-car-builder-solutionssuper-1000-x1-15w-40-engine-oil-available-in-multiple-sizes-car-builder-solutions
Quick Add
Close

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.
£46.96
£0.00
£46.96
(-0%)
Quick Add
Close
edge-5w-40-fully-synthetic-engine-oil-car-builder-solutionsedge-5w-40-fully-synthetic-engine-oil-car-builder-solutions
Quick Add
Close

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.
£64.96
£0.00
£64.96
(-0%)
Quick Add
Close
magnatec-10w-40-a-b-engine-oil-car-builder-solutionsmagnatec-10w-40-a-b-engine-oil-car-builder-solutions
Quick Add
Close

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.
£12.95
£0.00
£12.95
(-0%)
Quick Add
Close
super-2000-x1-10w-40-engine-oil-car-builder-solutionssuper-2000-x1-10w-40-engine-oil-car-builder-solutions
Quick Add
Close

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.
£9.95
£0.00
£9.95
(-0%)
Quick Add
Close
esp-formula-p-5w-30-engine-oil-car-builder-solutionsesp-formula-p-5w-30-engine-oil-car-builder-solutions
Quick Add
Close

MOBIL ESP Formula P 5W-30 Engine Oil

High-performance 5W30 engine oil. Protects catalytic converters, prevents sludge, and offers extended drain intervals.
£16.96
£0.00
£16.96
(-0%)
Quick Add
Close
edge-10w-60-supercar-engine-oil-multiple-sizes-available-car-builder-solutionsedge-10w-60-supercar-engine-oil-multiple-sizes-available-car-builder-solutions
Quick Add
Close

CASTROL EDGE 10W-60 Supercar Engine Oil

High-performance 10W-60 motor oil. Maximises engine protection and performance under extreme pressure. 4L capacity.
£22.96
£0.00
£22.96
(-0%)
Quick Add
Close
Filter
  • 10
  • 15
  • 20
  • 25
  • 30
  • 50
  • Featured
  • Most relevant
  • Best selling
  • Alphabetically, A-Z
  • Alphabetically, Z-A
  • Price, low to high
  • Price, high to low
  • Date, old to new
  • Date, new to old
Sort

Sort by:

  • Featured
  • Most relevant
  • Best selling
  • Alphabetically, A-Z
  • Alphabetically, Z-A
  • Price, low to high
  • Price, high to low
  • Date, old to new
  • Date, new to old
  • Swivelling Union 1/4" BSP Female With 10mm Hosetail - Car Builder SolutionsSwivelling Union 1/4" BSP Female With 10mm Hosetail - Car Builder Solutions

    Swivelling Union 1/4" BSP Female With 10mm Hose Tail

    A swivelling union connecting a 1/4" BSP female thread to a 10mm hose tail, offering a flexible and secure, leak-free connection.
    £4.80
    £0.00
    £4.80
    (-0%)
  • 1/4" BSP Female Brass Union With 6mm Hosetail - Car Builder Solutions1/4" BSP Female Brass Union With 6mm Hosetail - Car Builder Solutions

    Brass 1/4" BSP Female Union To 6mm Hose Tail

    Brass fitting connecting 1/4" BSP female union to 6mm hose tail. Secure, leak-free connection, ideal for plumbing applications.
    £4.80
    £0.00
    £4.80
    (-0%)
  • MALE A/C Union #8 Straight - Car Builder Solutions

    MALE A/C Union #8 Straight

    Durable male A/C union for connecting and extending air conditioning lines. Straight design for easy inline installations.
    £10.80
    £0.00
    £10.80
    (-0%)
  • Stainless Steel 3/8" UNF Swivel 'Y' Brake Union - Car Builder Solutions

    Stainless Steel 3/8" UNF Swivel 'Y' Brake Union

    Durable stainless steel swivel 'Y' brake union, ideal for plumbing and automotive applications, with 3/8" UNF thread.
    £16.80
    £0.00
    £16.80
    (-0%)
  • 3/8" UNF Short Male Union Plated Steel Single Union - Car Builder Solutions

    3/8" UNF Single Male Short Brake Union

    Durable plated steel 3/8" UNF male brake union for 3/16" copper/nickel lines. Easy installation with 11mm hex and 12mm thread.
    £0.60
    £0.00
    £0.60
    (-0%)
  • M10 x 1 Short Male Brake Unions Plated Steel Single union - Car Builder Solutions

    M10 x 1 Single Short Male Brake Union

    Durable M10 x 1 male brake union for 3/16" tubing. Plated steel, 12mm thread, 11mm hex. Secure, leak-free connection.
    £0.60
    £0.00
    £0.60
    (-0%)
  • Brass M12 x 1 Metric Female Blanking capBrass M12 x 1 Metric Female Blanking cap

    Brass M12 x 1 Metric Female Blanking cap

    Brass blanking cap seals unused M12 x 1 male ports. Prevents leaks, protects ports, ensures system integrity. Durable and easy to install.
    £4.20
    £0.00
    £4.20
    (-0%)
  • A/C Union CRIMP Ferrule #10

    A/C Union CRIMP Ferrule #10

    Crimp Ferrule - #10
    £1.68
    £0.00
    £1.68
    (-0%)
  • Stainless Steel M10 Bulkhead 45 Degree Brake Union - Car Builder Solutions

    Stainless Steel 3/8 UNF Bulkhead 45° Brake Union

    A durable stainless steel 45° brake union for secure and leak-proof brake line connections. Ideal for bulkhead installations.
    £10.80
    £0.00
    £10.80
    (-0%)
  • M14 x 1.5mm Male to JIC6 Aluminium Union - Car Builder Solutions

    M14 x 1.5mm Male to JIC6 Aluminium Union

     M14 X 1.5MM male thread with aluminium sealing washer to JIC6.  BLACK ANODISED ALUMINIUM UNION M14 x 1.4 MALE TO JIC6 (AN6) #HT145J6
    £8.40
    £0.00
    £8.40
    (-0%)
  • A/C Union CRIMP Ferrule #8

    A/C Union CRIMP Ferrule #8

    Crimp Ferrule - #8
    £1.56
    £0.00
    £1.56
    (-0%)
  • Brass Compression Union For 8mm Copper , Nylon or Steel PipeBrass Compression Union For 8mm Copper , Nylon or Steel Pipe

    Brass Compression Union For 8mm Copper , Nylon or Steel Pipe

    Brass compression joiner for 8mm pipe.
    £6.00
    £0.00
    £6.00
    (-0%)
  • MALE A/C Union #8 90 Degree - Car Builder Solutions

    MALE A/C Union #8 90 Degree

    90-degree A/C union with #8 crimp and 3/4" male thread (16 UNF) for secure, leak-free connections in tight spaces.
    £12.00
    £0.00
    £12.00
    (-0%)
  • A/C Union CRIMP Ferrule #6

    A/C Union CRIMP Ferrule #6

    Crimp Ferrule - #6
    £1.44
    £0.00
    £1.44
    (-0%)
  • Brass Compression Union For 6mm Copper , Nylon or Steel PipeBrass Compression Union For 6mm Copper , Nylon or Steel Pipe

    Brass Compression Union For 6mm Copper , Nylon or Steel Pipe

    Brass compression joiner for 6mm pipe.
    £6.00
    £0.00
    £6.00
    (-0%)
  • MALE A/C Union #8 45 Degree - Car Builder Solutions

    MALE A/C Union #8 45 Degree

    45-degree #8 male A/C union with 3/4" x 16 UNF thread. 120mm length. Durable and versatile for AC systems.
    £10.80
    £0.00
    £10.80
    (-0%)
  • M14 x 1.5mm Male to JIC8 Aluminium Union - Car Builder Solutions

    M14 x 1.5mm Male to JIC8 Aluminium Union

     M14 X 1.5mm male thread with aluminium sealing washer to JIC8  BLACK ANODISED ALUMINIUM UNION M14 x 1.4 MALE TO JIC8 (AN8) #HT145J8
    £8.40
    £0.00
    £8.40
    (-0%)
  • A/C Adapter #10 SAE Female to #10 Male O RingA/C Adapter #10 SAE Female to #10 Male O Ring

    A/C Adapter #10 SAE Female to #10 Male O Ring

    A/C Adapter #10 SAE Female to #10 Male O Ring
    £14.40
    £0.00
    £14.40
    (-0%)
  • A/C Adapter #8 SAE Female to #8 Male O RingA/C Adapter #8 SAE Female to #8 Male O Ring

    A/C Adapter #8 SAE Female to #8 Male O Ring

    A/C Adapter #8 SAE Female to #8 Male O Ring
    £12.00
    £0.00
    £12.00
    (-0%)
  • A/C Adapter #6 SAE Male to #6 Female O RingA/C Adapter #6 SAE Male to #6 Female O Ring

    A/C Adapter #6 SAE Male to #6 Female O Ring

    A/C Adapter #6 SAE Female to Male O Ring
    £12.00
    £0.00
    £12.00
    (-0%)
  • Brass Compression Union For 3/8" Copper , Nylon or Steel PipeBrass Compression Union For 3/8" Copper , Nylon or Steel Pipe

    Brass Compression Union For 3/8" Copper , Nylon or Steel Pipe

    Brass compression joiner for 3/8" pipe.
    £7.80
    £0.00
    £7.80
    (-0%)
  • Brass Compression Union For 5/16" Copper , Nylon or Steel PipeBrass Compression Union For 5/16" Copper , Nylon or Steel Pipe

    Brass Compression Union For 5/16" Copper , Nylon or Steel Pipe

    Brass compression joiner for 5/16" pipe.
    £4.80
    £0.00
    £4.80
    (-0%)
  • Brass Compression Union For 1/4" Copper , Nylon or Steel PipeBrass Compression Union For 1/4" Copper , Nylon or Steel Pipe

    Brass Compression Union For 1/4" Copper , Nylon or Steel Pipe

    Brass compression joiner for 1/4" pipe.
    £4.80
    £0.00
    £4.80
    (-0%)

Recently Viewed Products