Aluminium Port Plugs
- Free 100-Day Returns
- Free UK Delivery
- £1.58
- FREE UK DeliveryNext working day and worldwide delivery options also available.
- FREE 100-Day Hassle-Free ReturnsLearn more about our returns policy.
Did you remember your hose accessories?
We aim to dispatch orders the same day if ordered before 3pm (Monday to Friday, excluding bank holidays). Orders placed over the weekend will be sent on the Monday, unless it's a bank holiday.
For detailed delivery information, please visit our delivery page.
We stand by the quality of our products, which is why we offer a generous 100-day return policy, even for custom-made items. This extended returns period gives you plenty of time to check the quality and performance of our products.
For full details, please visit our returns page.
Aluminium Port Plugs – Lightweight Sealing for Oil, Fuel & Brake Systems
Our Aluminium Port Plugs are the ideal choice for sealing off unused ports in oil, fuel, brake, and coolant systems. Lightweight, corrosion-resistant, and precision-machined, these plugs provide a clean and effective sealing solution for performance applications.
Key Features
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Durable Anodised Aluminium
Constructed from high-grade aluminium with an anodised finish to resist corrosion and offer a professional appearance.
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Versatile Thread Sizes
Available in a wide range of male thread types to suit most fluid systems:
- M10 x 1.00
- M12 x 1.5
- M14 x 1.5
- M16 x 1.5
- M18 x 1.5
- M22 x 1.5
- AN3 (3/8"-24 UNF)
- AN4 (7/16"-20 UNF)
- AN6
- AN8
- AN10
- AN12
- AN16
- 1/8"-27 NPT
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Ideal for Maintenance and Custom Builds
Perfect for sealing off ports during system testing, modification, or storage in any custom or high-performance build.
Finish your setup with confidence using our Aluminium Port Plugs — a smart, lightweight solution for sealing off unused lines with style and reliability.
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What are aluminium port plugs used for?
Aluminium port plugs are designed to seal off unused or redundant threaded ports in various automotive components, such as oil filter sandwich plates, in-line thermostats, fuel rails, and sensor ports. They prevent fluid leaks and contamination, ensuring system integrity during maintenance or when certain ports are not in use.
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What sizes are available for these port plugs?
We offer the following thread sizes to suit various applications:
- M10 x 1.00
- M12 x 1.5
- M14 x 1.5
- M16 x 1.5
- M18 x 1.5
- M22 x 1.5
- AN3 (3/8"-24 UNF)
- AN4 (7/16"-20 UNF)
- AN6
- AN8
- AN10
- AN12
- AN16
- 1/8"-27 NPT
This range ensures compatibility with a wide array of fittings and systems.
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Are these port plugs compatible with your custom braided hoses?
While aluminium port plugs are not typically used with braided hoses, they are fully compatible with our range of custom braided hose fittings and adapters, allowing for secure sealing of unused ports in various fluid systems.
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What materials are these port plugs made from?
These port plugs are CNC-machined from premium-grade aluminium and finished with a durable black anodised coating, offering excellent corrosion resistance and long-lasting performance in both road and race environments.
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How do I install these port plugs?
Installation is straightforward: thread the plug into the unused port and tighten securely using an appropriate spanner. Ensure the threads are clean and undamaged to achieve a proper seal.
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Are these port plugs reusable?
Yes, our aluminium port plugs are designed for easy installation and removal, making them fully reusable. Simply disassemble and use them to block off another port as needed.
