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Premium TIG-welded aluminium components, built in the UK | info@thealloyshed.com

Featured Products:

Header Tanks

Hand-built aluminium header tanks, crafted for performance and reliability.

  • Aluminium Header Tank | Coolant Reservoir | Motorsport Fabricated 1.5L Aluminium Header Tank | Coolant Reservoir | Motorsport Fabricated 1.5L

    Aluminium Header Tank | Coolant Reservoir | Motorsport Fabricated 1.5L

    Sold out

    Aluminium Header Tank | Coolant Reservoir | Motorsport Fabricated 1.5L

    Regular price £149.99 GBP
    Regular price Sale price £149.99 GBP
    Sold out
  • Aluminium Header Tank | Coolant Reservoir | Motorsport Fabricated 1.5L Aluminium Header Tank | Coolant Reservoir | Motorsport Fabricated 1.5L

    Aluminium Header Tank | Coolant Reservoir | Motorsport Fabricated 1.5L

    Sold out

    Aluminium Header Tank | Coolant Reservoir | Motorsport Fabricated 1.5L

    Regular price £149.99 GBP
    Regular price Sale price £149.99 GBP
    Sold out
  • Ford Capri Mk3 Coolant Tank | Aluminium Header Tank (2.9 BOA) Ford Capri Mk3 Coolant Tank | Aluminium Header Tank (2.9 BOA)

    Ford Capri Mk3 Coolant Tank | Aluminium Header Tank (2.9 BOA)

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    Ford Capri Mk3 Coolant Tank | Aluminium Header Tank (2.9 BOA)

    Regular price £179.99 GBP
    Regular price Sale price £179.99 GBP
    Sold out
  • Subaru WRX / STI Aluminium Header Tank | Coolant Reservoir (02–07 WRX, 04–14 STI) Subaru WRX / STI Aluminium Header Tank | Coolant Reservoir (02–07 WRX, 04–14 STI)

    Subaru WRX / STI Aluminium Header Tank | Coolant Reservoir (02–07 WRX, 04–14 STI)

    Sold out

    Subaru WRX / STI Aluminium Header Tank | Coolant Reservoir (02–07 WRX, 04–14 STI)

    Regular price £139.99 GBP
    Regular price Sale price £139.99 GBP
    Sold out
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Fuel Tanks


Hand-built aluminium fuel tanks for motorsport and custom builds. TIG-welded in the UK.

  • Aluminium Fuel Tank | Motorsport Fabricated | 5L Capacity

    Aluminium Fuel Tank | Motorsport Fabricated | 5L Capacity

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    Aluminium Fuel Tank | Motorsport Fabricated | 5L Capacity

    Regular price £169.99 GBP
    Regular price Sale price £169.99 GBP
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Coolant Swirl Pots

Aluminium coolant swirl pots designed to improve air separation, aid bleeding, and stabilise cooling systems in motorsport and performance applications.

  • Aluminium Coolant Swirl Pot | Motorsport Fabricated | 0.9L

    Aluminium Coolant Swirl Pot | Motorsport Fabricated | 0.9L

    Sold out

    Aluminium Coolant Swirl Pot | Motorsport Fabricated | 0.9L

    Regular price £139.99 GBP
    Regular price Sale price £139.99 GBP
    Sold out

Fuel Swirl Pots


Crafted by Hand, designed to prevent fuel starvation under hard cornering and maintain consistent fuel delivery on track or road.

  • AN-Fitting Aluminium Fuel Swirl Pot — 1.5L

    AN-Fitting Aluminium Fuel Swirl Pot — 1.5L

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    AN-Fitting Aluminium Fuel Swirl Pot — 1.5L

    Regular price £154.99 GBP
    Regular price Sale price £154.99 GBP
    Sold out
  • Aluminium Fuel Swirl Pot | Motorsport Fabricated | 1.5L

    Aluminium Fuel Swirl Pot | Motorsport Fabricated | 1.5L

    Sold out

    Aluminium Fuel Swirl Pot | Motorsport Fabricated | 1.5L

    Regular price £135.00 GBP
    Regular price Sale price £135.00 GBP
    Sold out

Power Steering Reservoirs

TIG-welded aluminium power steering reservoir— built for reliability, clean look, and precise steering performance.

  • Aluminium Power Steering Reservoir | Motorsport Fabricated

    Aluminium Power Steering Reservoir | Motorsport Fabricated

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    Aluminium Power Steering Reservoir | Motorsport Fabricated

    Regular price £114.99 GBP
    Regular price Sale price £114.99 GBP
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Oil Catch Cans

Hand-built, Designed to separate oil vapour and blow-by gases, keeping your intake system clean and efficient.

  • Aluminium Oil Catch Can | Motorsport Fabricated | 1.5L

    Aluminium Oil Catch Can | Motorsport Fabricated | 1.5L

    Sold out

    Aluminium Oil Catch Can | Motorsport Fabricated | 1.5L

    Regular price £129.99 GBP
    Regular price Sale price £129.99 GBP
    Sold out

The Alloy Shed Journal

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  • Cooling System Pressure Caps Explained

    Cooling System Pressure Caps Explained

    January 6, 2026

    Pressure caps are a small but critical part of any cooling system. This article explains how radiator and header tank caps work, why pressure matters, and how to choose the...

    Cooling System Pressure Caps Explained

    January 6, 2026

    Pressure caps are a small but critical part of any cooling system. This article explains how radiator and header tank caps work, why pressure matters, and how to choose the...

  • Swirl Pot Sizing: Why Capacity Matters Less Than You Think

    Swirl Pot Sizing: Why Capacity Matters Less Tha...

    January 6, 2026

    Swirl pots are often chosen by capacity alone, but volume is rarely what makes them effective. Height, outlet position, and system layout play a far greater role in how well...

    Swirl Pot Sizing: Why Capacity Matters Less Tha...

    January 6, 2026

    Swirl pots are often chosen by capacity alone, but volume is rarely what makes them effective. Height, outlet position, and system layout play a far greater role in how well...

  • Coolant Swirl Pot vs Header Tank – What’s the Difference and Which Do You Need?

    Coolant Swirl Pot vs Header Tank – What’s the D...

    January 4, 2026

    Coolant swirl pots and header tanks are often confused, but they serve different purposes. A swirl pot is designed to actively remove air from the cooling system, improving stability and...

    Coolant Swirl Pot vs Header Tank – What’s the D...

    January 4, 2026

    Coolant swirl pots and header tanks are often confused, but they serve different purposes. A swirl pot is designed to actively remove air from the cooling system, improving stability and...

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The Alloy Shed

Hand-built aluminium parts, welded with pride in the UK.

Made for performance, reliability, and a clean engine bay finish.

📧 Email: info@thealloyshed.com

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