Plastic radiator caps
Plastic radiator caps for sale on Ireland's largest auction and classifieds sites
Budget picks — under £6
Radiator valves black • Designer radiators electric • Towel rails vertical - Free postage - New and Used
Your pipework coming • Type valve you • Will require depends - Free postage - New and Used
- Free postage - New and Used
Premium petg quality • Made from durable • High temperature resistant - Free postage - New and Used
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Products will not • Serviced per maintenance • Instructions includes rubber - Free postage - New and Used
Browse 48 plastic radiator caps listings currently in our index. Prices range from £3.49 to £43.99, with an average of £8.8. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about plastic radiator caps →
Select colours black • Grey - Free postage - New and Used
Towel radiators • Blanking bleeding plugs • Are not included - Free postage - New and Used
Larger spindle 9mm • 5mm total length • 32mm - Free postage - New and Used
Radiator valve cap • Upgrade your radiators • Appearance while safeguarding - Free postage - New and Used
These covers help • Safeguard your radiator • Valves which can - Free postage - New and Used
Larger spindle 9mm • 5mm total length • 32mm - Free postage - New and Used
Expansion water tank • Cap vauxhall opel • Astra corsa vectra - Free postage - New and Used
Larger spindle 9mm • 5mm - Free postage - New and Used
Larger spindle 9mm • 5mm - Free postage - New and Used
Anthracite grey radiator • Valve caps covers • Cover petg plastic - Free postage - New and Used
Includes rubber insert • Washer hold place • Over valve tap - Free postage - New and Used
Mid-range — £6 to £9
Radiator valve caps • Covers cover petg • Plastic free postage - Free postage - New and Used
Universal radiator cap • Easy fit suitable • Eliminates risks having - Free postage - New and Used
Due difference between • Different monitors picture • May not reflect - Free postage - New and Used
Larger spindle 9mm • 5mm total length • 32mm - Free postage - New and Used
20mm radiator valve • Covers caps replacement • Black white universal - Free postage - New and Used
Larger spindle 9mm • 5mm - Free postage - New and Used
20mm radiator valve • Caps covers lockshield • Multi packs 100 - Free postage - New and Used
- Free postage - New and Used
These covers help • Safeguard your radiator • Valves which can - Free postage - New and Used
You may have • Rights certain circumstances • Toaccess rectify erase - Free postage - New and Used
Spindle 5mm 8mm - Free postage - New and Used
Spindle 5mm 8mm - Free postage - New and Used
Spindle 5mm 8mm • Can also used • Screw down fiting - Free postage - New and Used
Radiator expansion tank • Cap ford focus • Fiesta max kuga - Free postage - New and Used
Easy install radiator • Fit cap special • Simply remove washer - Free postage - New and Used
Universal fit compatible • Most standard radiator • Compatibility versatile use - Free postage - New and Used
Premium — over £9
Includes rubber insert • Washer hold place • Over valve tap - Free postage - New and Used
Universal fit compatible • Most standard radiator • Compatibility versatile use - Free postage - New and Used
Easy install radiator • Fit cap special • Simply remove washer - Free postage - New and Used
Add touch elegance • Your radiator valves • These printed cap - Free postage - New and Used
Best suited holding • Vertical horizontal designer • Radiator brackets colour - Free postage - New and Used
Larger spindle 9mm • 5mm - Free postage - New and Used
- Free postage - New and Used
Larger spindle 9mm • 5mm total length • 32mm - Free postage - New and Used
Compatible most standard • Lockshield fittings provides • Clean professional appearance - Free postage - New and Used
Larger spindle 9mm • 5mm total length • 32mm regret these - Free postage - New and Used
Peugeot 106 mk2 • 1.1 1.4 1.5 • 1.6 electric 1996 - Free postage - New and Used
Compatible standard nova • Radiator valves ideal • Plumbers heating engineers - Free postage - New and Used
R50 r52 r53 • One cooper radiator • Cap are always - Free postage - New and Used
Straight lockshield head • 6mm white wheel • Cap only valve - Free postage - New and Used
Available various quantities • Including 100 cap • Printed from durable - Free postage - New and Used
- Free postage - New and Used
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🔥 Best eBay deals on plastic radiator caps
See all listings on eBay →These 48 listings for plastic radiator caps are the lowest-priced items currently in our index. Prices are sorted ascending so you can quickly gauge the market before going further.
2 x Chrome Cover Cap for Towel
Radiator valves black • Designer radiators electric • Towel rails vertical
£3
Chrome Cover Cap for Towel
Your pipework coming • Type valve you • Will require depends
£3
2 x Replacement White
£4
Everything you need to know about plastic radiator caps
Whether you are looking for a brand-new or second-hand plastic radiator caps, eBay offers one of the largest selections available online. With 48 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £3.49, while premium listings can reach £43.99 — giving you a wide budget spread to work with. The average price of £8.8 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.