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Best Radiator Caps - Holiday Sale

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Last Updated - 16.12.2025

Best Choice

01

Ceprznvey

Coolant Bleeder Kit, Radiator Fill Funnel, Automotive Flush Funnel Set, Spill-Proof Design with 16 Pieces, Fluid Tester Kit for Coolant Change and System Maintenance

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9.9

Exceptional

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Main highlights

Tough Workshop Build: Made from impact-resistant PP and ABS materials, the kit is designed to endure repeated use, resist chemiical corrosiion, and perform reliably in demanding garage or workshop environments for years
Spill-Proof Funnel System: The especialized design helps eliminate air pockets and prevents fluid overflow while refilling or flushing, ensuring cleaner, saferr, and more effective coolant changes for better engine protection
Multi-Vehicle Compatibility: Comes with a variety of color-coded caps and extensions to fit most domestic and imported vehicles, including cars, trucks, and SUVs, offering wide usability for garages or home car maintenance
Complete Funnel Kit: This 16-piece radiator fill funnel kit includes multiple adapters, extensions, and stoppers that support hassle-free coolant changes and air removal, making it ideal for both DIYers and mechanics alike
Built-In Tester Tool: Includes a fluid tester that allows you to quickly assess coolant quality and decide whether a flush is needed, helping maintain your engine's health and performance over time with minimal effort

27,45 €
Value for Money

02

Gates

GATES Rubber Company 31413 Radiator Caps-AD

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9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Gates Driven By Possibility
For use with fuel cap testers

23,07 €
03

patinadrift

Pack of 8 Blanking Plugs 1/2 Inch Sealing Cap Brass Cap with Seal Rubber Internal Thread End Cap Angle Valve Cap Blind Plug Water Pipe

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide Applications The angle valve cap suitable for most standard 3/4 inch sealing joints and pipes, can be used for outdoor faucets, pipes, radiators, plumbing fittings, drains, water tanks, washing machine valves and other accessories.
Universal size: internal thread diameter of brass cap: 2.5 cm/0.98 inches, outer diameter: 3 cm/1.18 inches, height: approx. 1.3 cm/0.51 inches; washers inner diameter 1.4 cm/0.55 inches, outer diameter 2.4 cm/0.95 inches. Suitable for most standard pipe thread fittings on the market.
Package includes: you will receive 8 pieces 3/4 inch hex brass cap, 4 pieces black seal rubber which ensure a strong seal without slipping.
Easy to use: the threaded interface is firmly constructed and not easy to break. Easy to install, just mount to the appropriate hose size and twist to adjust.
Brass material: the blind plugs are made of high-quality brass material with pressure resistance and smooth surface, acid and corrosion resistance, durable. Therefore, the brass cap can be used for a long time in a damp or rainy environment without easy to rust.

7,98 €
04

Hold-Fast Radiator Valves

Universal Fitting Replacement Safety Radiator Valve Caps / Tops - Domestic

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Without the need of a special tools for adapt.
Safety ear plugs for radiators, Replacement Universal Hose Coupling.
Pool the occurrence of breakfast radiators.
Original and the best by far.
Eliminates the risk of safety HS & E gestellt supported by stems from valve of the face.

11,41 €
05

Generisch

Coolant Tank Cap - Stainless Steel Replacement Caps | Leak-proof Engine Fuel Tank | Car Radiator Caps | Pressure Sealing Cap For Coolant Reservoir

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Sturdy Construction: Featuring a scratch-minimizing cover and wear-resistant surfaces, this sturdy radiator solution assures long-term component integrity and maintains both functionality and aesthetic appeal
Precision Thread Sealing Technology: Featuring a reinforced gasket and tight-seal interface, the radiator cover assures efficient cooling by preventing leaks and evaporation, utilizing precision thread sealing technology for dependable thermal management
Multi-Purpose Uses: Simplified Repair Advantage reduces upkeep expenses through a user-friendly design that includes easy-swap parts, and assures seamless integration with multiple radiator types and standard-port fittings
Cooling System Stability: Designed to provide stable cooling and long-term durability, its stainless steel construction resists rust and heat, ensuring dependable radiator performance in tough operating conditions
Advanced Cooling System: Optimizes thermal efficiency using a pressure-balanced radiator cover, minimizing overheating risks with double-pressure settings of 108kpa and 88kpa to ensure vehicle-specific cooling fit and consistent pressure compatibility

2,89 €
06

TopHomer

25 mm/0.98 inches, 4 pieces M8 thread diameter, solid aluminium circle disc glass top adapter, for tea table, coffee bar, radiator caps, round solid table feet pad

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With rubber ring: considering the convenience of installation and removal, this round aluminium disc is designed with non-slip rubber ring attachment, which is easy and quick to install, so you can lift the glass at any time. It saves time and effort compared to round cakes that use glue
Wide application: circular disc glass top adapter can support and stabilize your coffee table, especially used for glass furniture, coffee table, TV cabinet and other glass furniture connection and decoration, so you can lift the glass at any time
Sturdy material: circular disc made of aluminum material in silver color, solid aluminum has a thick structure, which is not only sturdy, wear-resistant, but also waterproof, rust-proof and heat resistant to maintain stable performance, which can be used for a long time
Stable support: round aluminum disc as an important accessory for glass coffee table is mainly used to support the table top and maintain the stability of the structure. Besides, the round disc glass top adapter can help distribute pressure on the tabletop, protect the glass table top from damage and extend the life of the coffee table
Beautiful decoration: the surface of the round aluminum disc is smooth, simple and beautiful design, can be used as a decorative element, so you can not only in the stability of your coffee table, but also the glass coffee table or table more modern style, which is a very practical glass table accessory

8,59 €
07

Generisch

Car Radiator Cap, Round Notch Grip Radiators Cap, 4.4 x 3.2 cm General Aluminium Alloy Car Tank Part Radiator Caps for Oil Tanks, Automobile, Vehicle Maintenance, Cooling System

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

fit for various automobile models: Designed to be a general radiator cap, it fits most cars, trucks, SUVs, and motorcycles, making it a versatile replacement part for different vehicle cooling systems
Perfect replacement for old or damaged radiator caps: Whether you need a replacement for a worn-out cap or a spare for use, this oil tank radiator cap ensures consistent engine cooling performance
High-quality auto radiator cap for secure sealing: Made from aluminum alloy, this round notch grip radiator cap ensures a tight, leak-proof seal, effectively maintaining engine coolant pressure for optimal vehicle performance
Heavy-duty construction for long-lasting durability: Crafted from high-strength aluminum alloy, this engine coolant reservoir cap resists , rust, and high temperatures, ensuring a long service life in extreme conditions
Easy grip round notch design for hassle- installation: The ergonomic round notch grip allows for quick and easy tightening or removal, providing a secure fit without requiring additional tools

8,89 €
08

TopHomer

40 mm / 1.57 inches, 4 pieces M8 thread diameter solid aluminium circle disc glass top adapter, for tea table, coffee bar, radiator caps, round solid table feet pad

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With rubber ring: considering the convenience of installation and removal, this round aluminium disc is designed with non-slip rubber ring attachment, which is easy and quick to install, so you can lift the glass at any time. It saves time and effort compared to round cakes that use glue
Wide application: circular disc glass top adapter can support and stabilize your coffee table, especially used for glass furniture, coffee table, TV cabinet and other glass furniture connection and decoration, so you can lift the glass at any time
Sturdy material: circular disc made of aluminum material in silver color, solid aluminum has a thick structure, which is not only sturdy, wear-resistant, but also waterproof, rust-proof and heat resistant to maintain stable performance, which can be used for a long time
Stable support: round aluminum disc as an important accessory for glass coffee table is mainly used to support the table top and maintain the stability of the structure. Besides, the round disc glass top adapter can help distribute pressure on the tabletop, protect the glass table top from damage and extend the life of the coffee table
Beautiful decoration: the surface of the round aluminum disc is smooth, simple and beautiful design, can be used as a decorative element, so you can not only in the stability of your coffee table, but also the glass coffee table or table more modern style, which is a very practical glass table accessory

9,19 €
09

TopHomer

45 mm / 1.77 inches, 4 pieces M8 thread diameter solid aluminium circle disc glass top adapter, for tea table, coffee bar, radiator caps, round solid table feet pad

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8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Show more
Main highlights

With rubber ring: considering the convenience of installation and removal, this round aluminium disc is designed with non-slip rubber ring attachment, which is easy and quick to install, so you can lift the glass at any time. It saves time and effort compared to round cakes that use glue
Wide application: circular disc glass top adapter can support and stabilize your coffee table, especially used for glass furniture, coffee table, TV cabinet and other glass furniture connection and decoration, so you can lift the glass at any time
Sturdy material: circular disc made of aluminum material in silver color, solid aluminum has a thick structure, which is not only sturdy, wear-resistant, but also waterproof, rust-proof and heat resistant to maintain stable performance, which can be used for a long time
Stable support: round aluminum disc as an important accessory for glass coffee table is mainly used to support the table top and maintain the stability of the structure. Besides, the round disc glass top adapter can help distribute pressure on the tabletop, protect the glass table top from damage and extend the life of the coffee table
Beautiful decoration: the surface of the round aluminum disc is smooth, simple and beautiful design, can be used as a decorative element, so you can not only in the stability of your coffee table, but also the glass coffee table or table more modern style, which is a very practical glass table accessory

9,39 €
10

Générique

Auto Radiator Cap, Runde Notch Grip Radiatorkappe, 4,4 x 3,2 cm General Aluminium Alloy Car Tank Part Radiator Caps für Öltank, Auto, Fahrzeugwartung, Kühlsystem

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8.1

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Robuste Konstruktion für lange Haltbarkeit: Hergestellt aus hochfester Aluminium-Legierung, diese kühlende Maschine hält Kappe stand, rust und hohe Temperaturen stand und sorgt für eine lange Lebensdauer unter extremen Bedingungen
Perfekter Ersatz für alte oder beschädigte Heizkörperkappen: Whether you need a replacement for a worn-out cap or a spare for use. This oil tank cap ensures consures engine cooling performance
Hochwertige Auto-Kühlerabdeckung für sichere Versiegelung: Hergestellt aus Aluminium-Legierung, diese runde Heizkörperkappe sorgt für einen festen und auslaufsicheren Abdichtung, hält den Motor kühlender Druck für optimale Leistung des Fahrzeugs
Geeignet für verschiedene Automodelle: Entworfen als eine generelle Radiator-Kappe, passend für die meisten Autos, Trucks, SUVs und Motorräder. Ein vielseitiger Ersatz für verschiedene Fahrzeug-Kühlsysteme
Easy grip round notch design for hassle- installation: The ergonomic round notch grip allows for quick and easy tightening or removal, providing a secure fit without requiring additional tools

11,49 €