Aluminium Header Tanks

Designed to help separate trapped air and maintain stable coolant pressure for reliable cooling performance.

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Aluminium Coolant Swirl Pots

Engineered to improve air separation, aid system bleeding, and stabilise cooling performance.

Aluminium Fuel Swirl Pots

Designed to prevent fuel starvation under hard cornering and maintain consistent fuel delivery on track or road.

Oil Catch Cans & Separators

Engineered to separate oil vapour and blow-by gases, helping to keep the intake system clean and efficient.

Aluminium Fuel Tanks

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

Hydraulic Reservoirs

TIG-welded aluminium hydraulic reservoirs for brake, clutch and power steering systems. Engineered for reliability, performance and a clean engine-bay finish.

Trusted by Enthusiasts

  • 1stcentury (Subaru Owner USA)

    "I ordered a new Subaru coolant reservoir online and I'm really pleased with the experience. The item arrived timely, it was packaged well, the seller's communication was great, and the quality of the tank looks awesome! Even shipped to the US, it's a similar price as mass-manufactured tanks but looks far better."

  • clancrusader7 (eBay customer)

    "The quality of the header tank I have just received is excellent. I had a good conversation with the seller concerning some modifications I required and he carried then out to the letter. Would not hesitate to use again."

  • Toby Cox (via Google Reviews)

    "Great quality tank, great communication and will definitely be buying from The Alloy Shed again. If I was closer, I’d be getting a load of other work done too. Big thumbs up from me 👍"

  • K P (via Google Reviews)

    "It was an absolute pleasure purchasing my expansion tank from The Alloy shed he made it to my exact measurements and kept in contact with me throughout the process to make sure it was exactly what I wanted I would definitely buy from The Alloy Shed again I highly recommend him"

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The Alloy Shed Journal

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  • Engineering That Evolves

    Engineering That Evolves

    Every product at The Alloy Shed is built on a philosophy of continuous refinement. Through real-world feedback, practical engineering and meticulous attention to detail, our designs evolve with every revision...

    Engineering That Evolves

    Every product at The Alloy Shed is built on a philosophy of continuous refinement. Through real-world feedback, practical engineering and meticulous attention to detail, our designs evolve with every revision...

  • Why Our Aluminium Cooling Tanks Use Radiator Caps

    Why Our Aluminium Cooling Tanks Use Radiator Caps

    We prefer using standard radiator neck and cap systems on our fabricated aluminium tanks due to their simplicity, serviceability and proven pressure regulation design. Widely used across OEM and motorsport...

    Why Our Aluminium Cooling Tanks Use Radiator Caps

    We prefer using standard radiator neck and cap systems on our fabricated aluminium tanks due to their simplicity, serviceability and proven pressure regulation design. Widely used across OEM and motorsport...

  • Why Your Car Overheats After a Coolant Change

    Why Your Car Overheats After a Coolant Change

    Overheating after a coolant change is a common issue. Learn the typical causes, from coolant level changes and thermostat problems to pressure cap and cooling system faults.

    Why Your Car Overheats After a Coolant Change

    Overheating after a coolant change is a common issue. Learn the typical causes, from coolant level changes and thermostat problems to pressure cap and cooling system faults.

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