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The Best Radiator Overflow Tank of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best Radiator Overflow Tank of 2022. Check our ranking below.

2,159 Reviews Scanned

Rank No. #1
EVIL ENERGY Coolant Overflow Tank, Radiator Overflow Bottle 800ml Aluminum Universal Black
  • [Universal] Suitable for most car. Please ensure enough space for installation.
  • [Size] Length: 7.48inch; Bottom diameter:2.95inch; Cap diameter: 1.96inch; Volume:800ml; Hose ID: 5/16inch.
  • [Material] Aluminum alloy coolant overflow tank and rubber hose.
  • [Feature] Designed with a 1/16" ventilation hole in the overflow bottle top for heat dissipation. O-ring seal to effectively prevent coolant leakage.
  • [Installation] Install vertically and keep away from heat sources. Installation instructions are included.
Rank No. #2
EVIL ENERGY Radiator Coolant Overflow Tank,Coolant Recovery Tank 1L Aluminum Universal
  • [Size] The Male to barb fitting thread size is M14*1.5.can work with 3/8" ID fuel hose.Overflow tank storage volume1L.
  • [Fitment]Universal coolant reservoir tank, fit for mostly of vehicles.Please measure before purchase to make sure there is enough space for installation.
  • [Note]Tight closed cap, fully TIG welded and thread come with O-ring gasket, let coolant reservoir can keep a good closed environment and prevent coolant leakage.It is high recommended use Tetflon tape when install, it can enhance airtightness prevent interface leakage.
  • [Function]When the coolant pressure in the radiator exceeds the pressure cap setting, the coolant is sealed through the pressure cap and flows through the overflow tube into the radiator coolant overflow tank.Bottom port is radiator overflow,the top port is the tank overflow.
  • [Installation] Barb fittings and bottom drain plugs are supplied with O-rings to ensure a good seal and Teflon tape is recommended for installation.
SaleRank No. #3
Coolant Overflow Tank, 800ml Aluminum Radiator Overflow Tank, Black Coolant Radiator Reservoir for Cars
  • Coolant Management: This 800ml aluminum coolant overflow tank is designed to optimize heat dissipation, ensuring your car's radiator operates at peak performance
  • Size: Length: 7.48 inch; Bottom diameter: 2.95 inch; Cap diameter: 1.96inch; Volume: 800ml; Hose ID: 1.96 inch. Keep your engine running smoothly with this coolant recovery tank that ensures proper coolant levels
  • Leak-Proof Design: Equipped with an O-ring seal, this coolant reservoir tank prevents coolant leakage, providing a secure and reliable solution for your vehicle's cooling system
  • Fitment: Engineered to fit most cars, this radiator overflow tank offers hassle-free installation, making it a convenient upgrade for coolant storage and distribution
  • Premium Finish: Features a sleek black coating for enhanced aesthetics. simply install and enjoy the peace of mind that comes with knowing your cooling system is well-maintained. Package includes: 1 x overflow tank; 1 x fuel line; 1 x cap clamp; 2 x mounting bracket; 2 x clamps; 2 x screws
Rank No. #4
BAGARAATAN 3"x9" Universal Radiator Overflow Tank,Stainless Steel Coolant Overflow Tank 32 OZ
  • 【Materials】Coolant Overflow Catch Puke Tank Made of High Quality Stainless Steel
  • 【Volume】32 oz Capacity,Polished Surface
  • 【Size】3" cylinder diameter, 9" tank body length, Cap thickness is extra 0.5",Bolts Center-to-center distance is 5.25" Cap thickness is extra 0.5".
  • 【Radiator Overflow Tank】Compatible with GM, Chevy, GMC, Cadillac, Pontiac, Buick, Ford, Chrysler, Dodge, etc of most hot rods and classic engines
  • 【Working Principle】The Overflow tank connected with the radiator is sufficient to catch any overflowing coolant With the overflow vent in the bottom,once the liquid gets to a certain level, built-in long tube which extended into the container will spills out to prevent leakage.
Rank No. #5
Dorman 54002 Engine Coolant Recovery Kit Universal Fit
  • Great for modification or replacement - this engine coolant recovery tank kit catches and returns coolant on cars, trucks, boats, motor homes and many other applications
  • Made in USA - durable accumulator bottle is designed and manufactured with thicker and longer-lasting plastic than cheap competitor models
  • All necessary equipment included - accumulator bottle, cap, hang basket with mount holes, overflow tube, tube clamps, washers and mounting clips
  • Multiple shapes and sizes available - similar designs with different reservoir dimensions available for fitting into particular spaces or making room for other components
  • Support available - every Dorman part is backed by Dorman's ASE Blue Seal Certified technical support team
SaleRank No. #6
Dorman 603-001 Coolant Reservoir Bottle, White Universal Fit
  • Universal design - this coolant reservoir is not vehicle-specific, and is designed for convenient use in a variety of applications where a durable reservoir is needed
  • Thick wall construction - manufactured from quality plastic to withstand heat and vibration
  • Complete solution - features three mounting holes for installation flexibility, and includes a vented cap
  • Trustworthy quality - designed in the United States and backed by more than a century of automotive aftermarket excellence
  • Support available - every Dorman part is backed by Dorman's ASE Blue Seal Certified technical support team
Rank No. #7
PQY Radiator Coolant Overflow Puke Tank Polished Stainless Steel 3"×10"
  • The Overflow tank connected with the radiator is sufficient to catch any overflowing coolant, which capacity is 32 ounces.
  • The Radiator Coolant tank with the overflow vent in the bottom,once the liquid gets to a certain level, built-in long tube which extended into the container will spills out to prevent leakage.
  • The Coolant Overflow Puke Tank is made of high quality stainless steel and polished surface,rust resistant and corrosion resistant for optimal durability and longevity.
  • The overflow coolant tank can work for most hot rods and classic engines.
  • Package includes 1pcs Stainless Radiator Coolant Overflow Reservoir Tank with Twist-On Aluminum Cap installed with 2pcs brakect ,2 pcs clamps and bolts for installation.
Rank No. #8
RYANSTAR Universal car Radiator Coolant Tank 800ml Coolant Expansion Tank Overflow Oil Catch Tank Cooling Catch Bottle Reservoir Aluminum Billet Black
  • 【6061 Aluminum】Expansion tank made of 6061 aluminum for enhanced strength, anodized polished and durable, better than plastic material.The hose is working temperature is -30°-120°, the working pressure is 1MPA, the blasting pressure is 2MPA.
  • 【Prevent Coolant Leakage】Tight closed cap, Fully Tig Welded and Thread Come with O-ring Gasket, Keep a good closed environment and Prevent coolant leakage.
  • 【Prevent Rust】The radiator coolant overflow tank is fairly simple device but it can save you a lot of money by preventing rust formation in the cooling system of your car.
  • 【Keep Operational Temperatures】Radiator coolant overflow tank makes the engine coolant to keep it within the operational temperatures when the engine is running at its optimum performance.
  • 【Coolant Back Into Radiator】When coolant will start to cool down, it will contract in volume, a vacuum valve in the pressure cap opens allowing the coolant which was flown into the radiator coolant overflow tank back into the radiator.
Rank No. #9
EVIL ENERGY Coolant Overflow Tank, Radiator Overflow Bottle 800ml Universal Aluminum Silver
  • [Universal] Suitable for most car. Please ensure enough space for installation.
  • [Size] Length: 7.48inch; Bottom diameter:2.95inch; Cap diameter: 1.96inch; Volume:800ml; Hose ID: 5/16inch.
  • [Material] Aluminum alloy coolant overflow tank and NBR fuel hose.
  • [Feature] Designed with a 1/16" ventilation hole in the overflow bottle top for heat dissipation. O-ring seal to effectively prevent coolant leakage.
  • [Installation] Install vertically and keep away from heat sources. Installation instructions are included.
Rank No. #10
BATONECO Radiator Coolant Over Flow Puke Tank Can 2 X 10 Inch Polished Stainless Steel 14 OZ 2'' X 10''
  • Materials:Made of High Quality Stainless Steel
  • 14 oz Capacity;Polished Surface
  • 2" cylinder diameter, 10" tank body length, Cap thickness is extra 0.5",Bolts Center-to-center distance is 5.25"
  • Comes with accessories, including L-brackets, bolts, nylon lock nuts.
  • Compatible with GM, Chevy, GMC, Cadillac, Pontiac, Buick, Ford, Chrysler, Dodge, etc of most hot rods and classic engines

Last update on 2025-08-06 / Affiliate links / Images from Amazon Product Advertising API

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  1. Brand Value: Every brand of Radiator Overflow Tank has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
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  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Radiator Overflow Tank.
  7. Product Quality: You don’t always get what you pay for with an Radiator Overflow Tank, sometimes less, and sometimes more.
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