YEHERIT
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603-973 Coolant Expansion Reservoir Tank with Cap
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603-973 Coolant Expansion Reservoir Tank with Cap
Made from durable PA plastic materials, this expansion tank withstands extreme heat and vibrations.
603-973 Coolant Expansion Reservoir Tank with Cap
Item #: 246221618

603-973 Coolant Expansion Reservoir Tank with Cap

86% of respondents would recommend this to a friend

Item #: 246221618

IMP 43

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Order now and get it around Monday, September 21
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Made from durable PA plastic materials, this expansion tank withstands extreme heat and vibrations.
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What Stands Out

Durable Construction
Made from high-quality materials designed to withstand high temperatures and pressure, ensuring long-lasting performance and reliability in all driving conditions.
Easy Installation
User-friendly design that allows for straightforward installation without special tools, making it accessible for car enthusiasts and DIYers alike.
Perfect Fit
Specifically designed to fit various vehicle models, ensuring optimal function and compatibility while minimizing replacement hassles and downtime.

Product Details

Shop 603-973 Coolant Expansion Reservoir Tank with Cap online at a best price in Isle of Man. B0DSFZPNBB
Brand NameYEHERIT
Manufacturer Part Number603-973
OEM Equivalent Part Number22856231, 603-973
ManufacturerYEHERIT
Number of Items1
Model Number22856231
Compatible with Vehicle TypeCar, Truck
Product Gradelike new
Fit TypeVehicle Specific
Automotive Fit TypeVehicle Specific Fit
Item Weight1.46 kg
Material TypePP Plastic
Exterior FinishPlastic
BrandYEHERIT
MaterialPP Plastic
Vehicle Service TypeCar, Truck

Who Should Buy?

Suitable For
  • Vehicle Owners

    Ideal for vehicle owners needing a reliable expansion tank replacement for effective coolant management.

  • DIY Mechanics

    Perfect for DIY mechanics looking for an affordable and durable solution for overheating issues during repairs.

  • Fleet Operators

    Beneficial for fleet operators to maintain the coolant system efficiently across various vehicles in their inventory.

Not Suitable For
  • High-Performance Vehicles

    May not be suitable for high-performance vehicles requiring specialized or upgraded cooling systems for optimal performance.

Product Description

603-973 Coolant Expansion Reservoir Tank with Cap

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the purpose of the 603-973 Coolant Expansion Reservoir Tank?

    Answer: The 603-973 Coolant Expansion Reservoir Tank serves a critical function in your vehicle's cooling system. It helps maintain the correct level of coolant, allowing the engine to run at optimal temperatures. By collecting overflow from the radiator, this tank prevents coolant loss and potential overheating. In practical scenarios, a well-functioning reservoir tank can extend engine life and enhance performance by ensuring proper coolant circulation throughout the system.
  • Question: Is the 603-973 Coolant Expansion Reservoir Tank compatible with various Chevy models?

    Answer: Yes, the 603-973 Coolant Expansion Reservoir Tank is specifically designed to be compatible with multiple Chevy models, including the Silverado 1500, Silverado 2500, and Tahoe, as well as GMC Sierra 1500, Yukon, and Cadillac Escalade. This compatibility ensures that if you own one of these vehicles, you can rely on this tank to fit seamlessly without modification. Additionally, using parts that fit perfectly helps maintain the integrity of the vehicle's cooling system.
  • Question: How do I know if my coolant reservoir tank needs to be replaced?

    Answer: Signs that your coolant reservoir tank may need replacement include visible cracks, leaks, or a significant drop in coolant levels. If you notice your engine overheating or a low coolant warning light on the dashboard, these may also indicate a problem. In many cases, finding coolant puddles or a sweet smell around your engine can signify a tank issue. Regular checks can help you address these problems early, preventing more extensive engine damage.
  • Question: What should I do before replacing my coolant expansion reservoir tank?

    Answer: Before replacing the coolant expansion reservoir tank, it is essential to allow your engine to cool down completely to avoid burns. Next, locate the tank in your vehicle and inspect it for any other underlying issues that may need attention. Drain any remaining coolant, and carefully detach the old tank. Once you are ready to install the new 603-973 tank, ensure all connections are secure and filled with the correct coolant to maintain the efficiency of your engine's cooling system.
  • Question: Can I install the 603-973 Coolant Expansion Reservoir Tank myself?

    Answer: Applying basic automotive repair skills, you can certainly install the 603-973 Coolant Expansion Reservoir Tank yourself. The installation process typically involves unscrewing the old tank and securely fitting the new one in its place. Make sure to consult your vehicle's service manual for specific instructions or diagrams that can assist you in the process. DIY installation can save time and add personal satisfaction by enhancing your vehicle's functionality.
  • Question: Does the 603-973 tank come with a cap?

    Answer: Yes, the 603-973 Coolant Expansion Reservoir Tank includes a cap designed to fit perfectly for secure sealing. The cap prevents coolant from escaping and protects against contaminants entering the system, which is vital for maintaining the efficiency of your cooling system. Using a compatible cap ensures that the reservoir operates optimally, ultimately prolonging the life of your vehicle's engine.
  • Question: What factors contribute to the deterioration of a coolant expansion reservoir tank?

    Answer: Factors such as temperature fluctuations, exposure to engine chemicals, and resonance from driving can contribute to the deterioration of a coolant expansion reservoir tank. Over time, plastic can become brittle and prone to cracks or leaks. Regular maintenance checks help catch these issues early, ensuring your vehicle’s cooling system remains efficient and your engine performs optimally without overheating.
  • Question: Where can I buy the 603-973 Coolant Expansion Reservoir Tank in Isle of Man?

    Answer: You can purchase the 603-973 Coolant Expansion Reservoir Tank at Ubuy. Ubuy offers a convenient online shopping experience, providing you with access to a variety of automotive parts, including this reservoir tank. By choosing Ubuy, you can trust in a reliable sourcing of components that are both high-quality and compatible with your Chevy or GMC vehicle.
  • Question: What should I check after installing the new coolant tank?

    Answer: After installing the new 603-973 Coolant Expansion Reservoir Tank, it is essential to check for any leaks around the tank and connections. Additionally, ensure that the coolant level is correct and monitor the engine temperature during the next few drives. This post-installation check is crucial to confirm that the new tank is functioning as intended, which will help maintain the overall health of your vehicle’s cooling system.
  • Question: How does a malfunctioning coolant expansion reservoir tank affect my vehicle?

    Answer: A malfunctioning coolant expansion reservoir tank can lead to a range of issues, including engine overheating, reduced performance, and possible engine damage due to inadequate coolant levels. When there are leaks or cracks, the coolant can escape, causing the system to operate inefficiently. Regular monitoring and timely replacement of the tank can prevent these complications, ensuring your vehicle runs smoothly and efficiently.

YEHERIT Coolant Recovery Kits 22856231 Editorial Review

603-973 Coolant Expansion Reservoir Tank with Cap is an excellent replacement part designed specifically for vehicles such as cars and trucks. This tank, made of durable PP plastic, offers a perfect fit, ensuring there are no leaks, as confirmed by multiple user reviews praising its straightforward installation process and solid quality. Compatible with several OEM part numbers, including 22856231, it is known for providing a reliable solution to coolant issues and has garnered positive feedback for its effectiveness as a hassle-free fix for vehicle owners.

Customer Reviews & Ratings

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Pros

  • Perfect fit for various vehicle models
  • Easy to install with no special tools needed
  • Made from durable PP plastic material
  • Compatible with popular OEM part numbers
  • Users report no leaks after installation

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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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11 September 2026 · via Trustpilot
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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IMP 43

Order now and get it around Monday, September 21

QTY:

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Features & Benefits

  • Compatible with multiple Cadillac, Chevrolet, and GMC models from 2014-2020.
  • Reduces oil dilution, cylinder wear, fuel consumption, and exhaust emissions.
  • Improves the heating system's efficiency for optimal vehicle performance.
  • Constructed from durable PA plastic to withstand extreme conditions.
  • Functions as a vital part of the cooling system to maintain proper engine operation.
  • Backed by a one-year unlimited-mileage guarantee with prompt customer service.

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