VW GOLF MK5 COOLANT EXPANSION / HEADER TANK RESERVOIR

The image below shows a 2008 Volkswagen Golf 1K GTI 5-door hatchback, which sits within the current Golf GTI fitment declared for this listing. It is a reference vehicle photograph only and is not the donor vehicle.

The coolant expansion/header tank is mounted in the engine bay and forms part of the engine cooling circuit. It provides expansion volume as coolant heats and cools, provides a visible coolant-level reference/fill point, and incorporates the level-sensor connection on this tank design.

During normal operation engine coolant expands as temperature rises and contracts as the cooling system cools. The expansion reservoir provides controlled space for that change in volume and provides the system's coolant level reference/fill point.

On this reservoir design the electrical connection is associated with coolant-level monitoring. The reservoir does not independently control engine temperature; it is one component within the complete cooling system.

Correct fitment is more than the outside shape of the bottle. Hose-neck position and diameter, mounting tabs, cap arrangement, electrical connector geometry and available engine-bay clearance all need to correspond with the vehicle. Matching 1K0121407A / the recognised later 1K0121407F family together with your vehicle details gives much greater confidence than ordering from the vehicle name alone.

This is a general planning estimate rather than a manufacturer flat-rate time. Access, engine type, seized clamps/fasteners, coolant draining and bleeding requirements can increase workshop time.

ThePartPilot also offers a fitting / repair service subject to workshop availability and vehicle requirements. Please contact us through eBay Messages to ask about availability before making travel arrangements.

Please make sure the delivery address selected at eBay checkout is complete and correct. For transaction security we cannot simply redirect a parcel to a different address after purchase. If an incorrect address has been used, request cancellation through eBay as quickly as possible and repurchase using the correct checkout address where possible.

International orders can be handled through eBay's international shipping programme where this item, the buyer and destination are eligible. eBay is currently transitioning UK sellers from the Global Shipping Programme to eBay International Shipping, so the options and destinations displayed at checkout are the final authority.

Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain and Sweden.

Antigua and Barbuda, Aruba, Australia, Bahamas, Bahrain, Bangladesh, Barbados, Belize, Bermuda, Bolivia, Brazil, Brunei Darussalam, Cambodia, Canada, Cayman Islands, Chile, China, Colombia, Costa Rica, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, French Guiana, Grenada, Guadeloupe, Guatemala, Guernsey, Honduras, Hong Kong, Iceland, Indonesia, Israel, Jamaica, Japan, Jersey, Jordan, Kuwait, Liechtenstein, Macau, Malaysia, Maldives, Martinique, Mexico, Monaco, Montserrat, New Zealand, Nicaragua, Norway, Oman, Pakistan, Panama, Paraguay, Peru, Philippines, Qatar, Reunion, Saint Kitts and Nevis, Saint Lucia, Saudi Arabia, Singapore, South Africa, South Korea, Sri Lanka, Switzerland, Taiwan, Thailand, Trinidad and Tobago, Turks & Caicos Island, UAE, Ukraine, Uruguay, USA and Vietnam.

This listing provides photographs, part-number information and compatibility guidance specifically to help buyers order the correct component first time. Please complete the fitment checklist before installation.

Returns are handled in accordance with the return terms shown on the eBay listing and eBay policy. If a returned automotive part has been installed, damaged, altered, contaminated, returned incomplete or otherwise suffers a loss in value after receipt, any permitted refund deduction will only be applied where eBay policy allows it and only to reflect the actual loss in value.

If the item you receive materially differs from the item described or photographed, please use the appropriate eBay return process and contact us through eBay Messages.

This qualifying pre-owned item is sold under the applicable VAT Global Accounting / margin-scheme treatment. VAT is not separately itemised and there is no separately reclaimable VAT amount shown for the goods.

Our large stocked range helps us supply replacement components quickly without pretending that a generic stock photograph is a photograph of your exact item. The photographs higher in this description show the actual component being sold.

Thank you for supporting ThePartPilot and a local independent automotive parts business. Keeping serviceable automotive components in circulation can reduce unnecessary waste, extend the useful life of existing parts and offer a cost-effective alternative to replacing every component with a newly manufactured one.

Pre-owned factory-numbered components can often represent a substantial saving compared with buying a newly supplied replacement, although the exact saving depends on the individual part and current market price. Our priority is simple: clear information, accurate matching and helping you buy the correct part first time.

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