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Expansion Tank Caps

Ensure consistent cooling system pressure with Expansion Tank Caps for a range of popular makes, including BMW, Mercedes, Audi and more. These vital components prevent coolant overflow during temperature fluctuations and maintain proper pressure levels within the system. Regular replacement, typically between 30,000 to 90,000 kilometers, is crucial to prevent potential engine overheating and damage. At Run Auto Parts, we stock Expansion Tank Caps sourced from trusted brands such as Febi Bilstein, Mahle, and Vaico. Our caps are designed to meet OE (Original Equipment) standards, ensuring reliable performance and optimal cooling system function. Shop with confidence and safeguard your engine's health with high-quality Expansion Tank Caps.

Mahle
Mahle Coolant Expansion Tank Cap CRB22000P
Mahle
Mahle Coolant Expansion Tank Cap CRB139000S
Vaico
Vaico Coolant Expansion Tank Cap V10-0490
Vaico
Vaico Expansion Tank Cap V20-0097-1
Vaico
Vaico Coolant Expansion Tank Cap V20-2058
Vaico
Vaico Expansion Tank Cap V20-0098-1
$21.95
Vaico Expansion Tank Cap V20-0098-1
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Vaico
Vaico Coolant Expansion Tank Cap V30-3091
Vaico
Vaico Expansion Tank Cap V20-0034
$31.95
Vaico Expansion Tank Cap V20-0034
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Topran
Topran Coolant Expansion Tank Cap 720 172
Topran
TOPRAN Expansion Tank Cap 700 431
Vaico
Vaico Expansion Tank Cap V24-0445
$29.95
Vaico Expansion Tank Cap V24-0445
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Vaico
Vaico Coolant Expansion Tank Cap V10-0890

Expansion Tank Caps for Popular makes and models including BMW, Mercedes, and Audi

An Expansion Tank Cap is an important component of a vehicle's cooling system, responsible for maintaining a constant pressure within the coolant system. Its primary function is to prevent coolant overflow when the system heats up and expands. By allowing air back into the system when the pressure drops, the cap facilitates the continuous cooling process. Additionally, it acts as a barrier, preventing dirt and contaminants from entering the coolant system and ensuring optimal engine efficiency. Regular inspection and replacement of the Expansion Tank Cap are crucial to avoid potential costly repairs.

The vehicle's expansion tank cap should be replaced at the manufacturer's recommended interval, typically between 30,000 to 90,000 kilometers. This component plays a vital role in maintaining proper pressure within the radiator and ensuring the coolant remains within the correct pressure range. Over time, the cap, made of rubber or plastic, can deteriorate due to exposure to heat and acidity. The gasket can also degrade, leading to air and coolant leakage and resulting in engine overheating. Neglecting the replacement of a faulty expansion tank cap can lead to a complete cooling system failure. Therefore, periodic replacement is essential to ensure the cooling system operates optimally.

At Run Auto Parts, we stock Expansion Tank Caps for various top makes and models, including BMW 3 Series, 5 Series, 7 Series, Z3, X3, 6 Series, Audi A4, A6, VW Transporter, and Mercedes E-Class. Our Tank Caps are designed to maintain the proper level and pressure within the engine system, reducing the risk of engine overheating due to low coolant levels and promoting safe and efficient operation. We also offer Tank Caps for many other vehicles. Our caps are sourced from trusted brands such as Febi Bilstein, Mahle, and Vaico, known for their commitment to manufacturing high-quality OE (Original Equipment) automotive components. When you choose Run Auto Parts, you can be confident in the durability, reliability, and performance of our Expansion Tank Caps.

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Run Auto Parts is Australia's biggest independent online auto parts store for European car owners. Since 2012, our slogan has been We Know Euro, but did you know we now sell quality OEM and Aftermarket parts for ALL vehicle makes and models?

So now we offer all our customers access to the best OEM and Aftermarket parts at the most affordable prices, no matter what they drive.

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