Fuel Caps and Locking Fillers for Tanks and Necks

Secure your fuel system with our range of filler caps and locking fuel lids. This collection includes vented and non-vented caps, screw-on and bayonet styles, race-style billet caps and flush-mount locking fillers — ideal for restorations, custom builds and fuel tank upgrades.

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Instrument Voltage StabiliserInstrument Voltage Stabiliser
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Instrument Voltage Stabiliser

Instrument Voltage Stabiliser
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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

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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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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
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Brake and Clutch Reservoir Bleeding Adapter

Brake and Clutch Reservoir Bleeding Adapter

RESERVOIR BLEEDING ADAPTER
£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
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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
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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
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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
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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
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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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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
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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
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440 Amp Jump Start Posts

440 Amp Jump Start Posts

SOLD AS A PAIR
£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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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
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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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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
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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
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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.
£9.60
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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  • 94mm Budget Locking Aero Fuel Cap Assembly Satin Aluminium - Car Builder Solutions94mm Budget Locking Aero Fuel Cap Assembly Satin Aluminium - Car Builder Solutions

    94mm Budget Locking Aero Fuel Cap Assembly Satin Aluminium

    94mm dia. fits in a 62mm hole. Stepped 51mm and 58mm neck.
    £70.80
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    £70.80
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  • 79mm Tank Mounting Non-Locking Aero Fuel Cap Assembly Satin - Car Builder Solutions79mm Tank Mounting Non-Locking Aero Fuel Cap Assembly Satin - Car Builder Solutions

    79mm Tank Mounting Non-Locking Aero Fuel Cap Assembly Satin

    79mm tank-mounted non-locking Aero fuel cap assembly in satin finish. Direct mount, 51mm hole fit, 32mm height, cork gasket, stainless fixings.
    £93.60
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    £93.60
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  • 79mm Non-Locking Aero Fuel Cap Assembly Satin - Car Builder Solutions79mm Non-Locking Aero Fuel Cap Assembly Satin - Car Builder Solutions

    79mm Non-Locking Aero Fuel Cap Assembly Satin

    79mm non-locking aero fuel cap assembly in satin aluminium. 51mm neck, 64mm PCD, 32mm height. Includes cork gasket and stainless steel fixings.
    £98.40
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    £98.40
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  • 82mm Locking Fuel Cap Assembly Satin ***Vented*** - Car Builder Solutions82mm Locking Fuel Cap Assembly Satin ***Vented*** - Car Builder Solutions

    82mm Locking Fuel Cap Assembly Satin ***Vented***

    IVA-OK. Vented
    £93.60
    £0.00
    £93.60
    (-0%)
  • 82mm Locking Fuel Cap Assembly Satin - Car Builder Solutions82mm Locking Fuel Cap Assembly Satin - Car Builder Solutions

    82mm Locking Fuel Cap Assembly Satin

    IVA OK Fits through a 57mm hole.
    £93.60
    £0.00
    £93.60
    (-0%)
  • 94mm Locking Aero Fuel Cap Assembly Satin Tank Mount Flush Fit No Neck - Car Builder Solutions94mm Locking Aero Fuel Cap Assembly Satin Tank Mount Flush Fit No Neck - Car Builder Solutions
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    94mm Aero Fuel Cap Assembly Satin Tank Mount Flush Fit No Neck

    Secure and stylish satin anodised aluminium fuel cap with locking insert. Flush fit, 94mm diameter, fits 62mm hole. Includes keys and fixing pack.
    £128.40
    £0.00
    £128.40
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  • 94mm Locking Aero Fuel Cap Assembly Satin Black Tank Mount Flush Fit No Neck - Car Builder Solutions94mm Locking Aero Fuel Cap Assembly Satin Black Tank Mount Flush Fit No Neck - Car Builder Solutions
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    94mm Locking Aero Fuel Cap Assembly Satin Black Tank Mount Flush Fit No Neck

    Secure and stylish satin black locking fuel cap assembly for direct tank mounting. Flush fit design, includes cork gasket and two keys.
    £128.40
    £0.00
    £128.40
    (-0%)
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  • 76mm PCD Fixing Ring For Aero3 Fuel Cap - Car Builder Solutions76mm PCD Fixing Ring For Aero3 Fuel Cap - Car Builder Solutions

    76mm PCD Fixing Ring For 94mm Fuel Caps

    76mm PCD fuel cap fixing ring for Aero3. Made from anodised aluminium with stainless steel inserts. Fits inside the fuel tank.
    £19.20
    £0.00
    £19.20
    (-0%)
  • 76mm PCD Fuel Cap Gasket - Car Builder Solutions

    76mm PCD Fuel Cap Gasket for 94mm Caps

    76mm fuel cap gasket for Aero3. Fuel-proof neoprene, 93mm OD, 63mm ID, 1mm thick, six 5.5mm holes. Ensures a secure seal.
    £4.80
    £0.00
    £4.80
    (-0%)
  • 94mm Locking Aero Fuel Cap Assembly Satin Aluminium - Car Builder Solutions94mm Locking Aero Fuel Cap Assembly Satin Aluminium - Car Builder Solutions
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    94mm Aero Fuel Filler Cap Satin Aluminium

    Fits through a 62mm hole. Integral 2-stage neck 51mm (2") and 57mm (2 1/4").
    £150.00
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    £150.00
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  • 94mm Locking Aero Fuel Cap Assembly Black - Car Builder Solutions94mm Locking Aero Fuel Cap Assembly Black - Car Builder Solutions
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    94mm Aero Fuel Filler Cap Black

    Fits through a 62mm hole. Integral 2-stage neck 51mm (2") and 57mm (2 1/4").
    £154.80
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    £154.80
    (-0%)
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  • 94mm Natural Alloy Aero Cap and Vented Neck Package - Car Builder Solutions94mm Natural Alloy Aero Cap and Vented Neck Package - Car Builder Solutions

    94mm Natural Alloy Aero Cap and Vented Neck Package

    TETHERED IVA OK
    £222.00
    £0.00
    £222.00
    (-0%)
  • 94mm Satin Black Aero Cap and Vented Neck Package - Car Builder Solutions94mm Satin Black Aero Cap and Vented Neck Package - Car Builder Solutions

    94mm Satin Black Aero Cap and Vented Neck Package

    TETHERED IVA OK
    £246.00
    £0.00
    £246.00
    (-0%)
  • 120mm Locking Aero Fuel Cap Satin - Car Builder Solutions120mm Locking Aero Fuel Cap Satin - Car Builder Solutions

    120mm Locking Aero Fuel Cap Satin

    Use with #FN2 to fit to your body. Or use on its own direct to tank.
    £127.20
    £0.00
    £127.20
    (-0%)
  • 120mm Locking Aero Fuel Cap Black - Car Builder Solutions120mm Locking Aero Fuel Cap Black - Car Builder Solutions

    120mm Locking Aero Fuel Cap Black

    Use with #FN2 to fit to your body. Or fit direct to tank.
    £127.20
    £0.00
    £127.20
    (-0%)
  • 120mm Filler Neck - Car Builder Solutions120mm Filler Neck - Car Builder Solutions

    120mm Filler Neck

    120mm aluminium filler neck for remote mounting of AERO4S, AERO4B & AEROCH. Durable, satin anodised finish. 51mm hose. Cork gasket.
    £39.60
    £0.00
    £39.60
    (-0%)
  • 102mm PCD Fixing Ring - Car Builder Solutions102mm PCD Fixing Ring - Car Builder Solutions

    102mm PCD Fixing Ring

    Fits #AERO4B and #AERO4S.
    £19.20
    £0.00
    £19.20
    (-0%)
  • 120mm PCD Neoprene Gasket - Car Builder Solutions

    120mm PCD Neoprene Gasket

    Fuel-resistant neoprene gasket, 120mm O.D., 85mm I.D., 2.25mm thick, eight 5.6mm holes on a 102mm P.C.D.
    £8.40
    £0.00
    £8.40
    (-0%)
  • 126mm Locking Aero Fuel Cap and Neck Assembly Satin - Car Builder Solutions126mm Locking Aero Fuel Cap and Neck Assembly Satin - Car Builder Solutions

    126mm Locking Aero Fuel Cap and Neck Assembly Satin

    126 dia, fits a 98mm hole. 50.7mm (2") Hose spigot.
    £178.80
    £0.00
    £178.80
    (-0%)
  • 139mm Tank Mounting Locking Aero Fuel Cap Assembly Satin - Car Builder Solutions139mm Tank Mounting Locking Aero Fuel Cap Assembly Satin - Car Builder Solutions

    139mm Tank Mounting Locking Aero Fuel Cap Assembly Satin

    139 dia. fits a 106mm hole direct on tank.
    £166.80
    £0.00
    £166.80
    (-0%)
  • 139mm Non-Locking Aero Fuel Cap and Neck Assembly Satin - Car Builder Solutions139mm Non-Locking Aero Fuel Cap and Neck Assembly Satin - Car Builder Solutions

    139mm Non-Locking Aero Fuel Cap and Neck Assembly Satin

    126 dia, fits a 98mm hole. 90mm Hose spigot.
    £154.80
    £0.00
    £154.80
    (-0%)
  • 63mm Aston Style Alloy Fuel Cap and Neck Assembly - Car Builder Solutions63mm Aston Style Alloy Fuel Cap and Neck Assembly - Car Builder Solutions

    63mm Aston Style Alloy Fuel Cap and Neck Assembly

    Integral mounting flange with 51mm fuel hose spigot.
    £66.00
    £0.00
    £66.00
    (-0%)
  • Aston Cap Assembly Complete with Neck and Locking Insert 100mm - Car Builder Solutionsaston-cap-assembly-complete-with-neck-and-locking-insert-car-builder-solutions

    Aston Cap Assembly Complete with Neck and Locking Insert 100mm

    Fits into a 76mm (3") hole. Non Vented.
    £156.00
    £0.00
    £156.00
    (-0%)
  • 44mm Unleaded Insert For Fuel Cap - Car Builder Solutions44mm Unleaded Insert For Fuel Cap - Car Builder Solutions

    44mm Unleaded Insert For Fuel Cap

    Prevent misfuelling with this 44mm unleaded fuel cap insert. Fits various fuel caps, ensuring correct fuelling.
    £27.60
    £0.00
    £27.60
    (-0%)
  • Filler Hose Filler Cap 46mm - Car Builder SolutionsFiller Hose Filler Cap 46mm - Car Builder Solutions

    Filler Hose Filler Cap 46mm

    A non-vented, non-locking 46mm filler hose cap for 45mm ID hoses. Provides a secure seal. Easy to install, durable, and compact.
    £90.00
    £0.00
    £90.00
    (-0%)

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