Seat Toledo 2005-2009 Coolant Expansion Tank 1K0121407A Golf A3 Octavia

Seat Toledo 2005-2009 Coolant Expansion Tank 1K0121407A Golf A3 Octavia

£13.10
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Seat Toledo 2005-2009 Coolant Expansion Tank 1K0121407A Golf A3 Octavia

Seat Toledo 2005-2009 Coolant Expansion Tank 1K0121407A Golf A3 Octavia

£13.10
Seat Toledo 2005-2009 Coolant Expansion Tank 1K0121407A Golf A3 Octavia
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Seat Toledo 2005-2009 Coolant Expansion Tank 1K0121407A Golf A3 Octavia

Premium eBay listing template for a coolant expansion tank / header tank. Built to help buyers match the correct part first time, reduce returns, and improve search visibility with exact fitment years, part numbers, and a clear compatibility guide.


Part Number1K0121407A
FitmentVAG platform compatibility
Stock25,000+ parts
What this part does: The coolant expansion tank stores excess coolant, helps maintain pressure, and gives the cooling system space to expand as engine temperature rises.

Quick Sales Points

SEAT Volkswagen Audi Škoda
  • Exact fitment years shown below to help the customer order the correct part first time.
  • Collection available 7 days a week until 8pm by appointment, including bank holidays by prior appointment.
  • Worldwide shipping via eBay Global Shipping Programme where eligible.
  • Fitting service and repair garage service subject to availability.
  • Customers must ensure checkout address is correct before paying.
  • Returns under “Doesn’t fit” or “Item not as described” can attract a 50% restock fee where fitment has already been clearly stated.

Vehicle Reference Photos

These are the reference-style images embedded into the template. Use only licensed images you are comfortable hotlinking, and always test the listing on eBay before going live.

Seat Toledo III reference photo
SEAT Toledo III — 5-door style reference for the listed Toledo fitment.
Volkswagen Golf Mk5 reference photo
Volkswagen Golf V / Mk5 — matching platform reference for the compatible Golf range.
Mechanic repair garage reference photo
Mechanic workshop — repair garage photo for service, labour, and fitting support messaging.
Warehouse stock reference photo
Warehouse stock — stock image for the 25,000+ parts-in-stock message and premium dispatch feel.

Confirmed Fitment Table

Verified from catalog sources and the part number family. Always check VIN, engine code, and the photo before purchase if the car has been modified or if the cooling system has been changed.
Vehicle Exact Years Body / Range Notes Fitment Status
SEAT Toledo (Typ 5P) 2005-2009 Toledo III generation Confirmed
Volkswagen Golf A5 / Mk5 2003-2009 Golf Mk5 platform family Confirmed
Audi A3 (Typ 8P Facelift) 2008-2013 A3 8P facelift catalog range Confirmed
Škoda Octavia (Typ 1Z) 2004-2008 Octavia 1Z catalog range Confirmed

Not listed above, so not confirmed here: later generation platform changes should be checked by VIN or by comparing the part number on the old tank.

Compatibility, Cross-References & Fit Check

Part / Cross Reference Notes
1K0121407A Main part number shown on the listing.
1K0 121 407 A Spaced catalog format.
FEBI 46748 Aftermarket replacement reference seen in catalog data.
MEYLE 1002230009 Aftermarket replacement reference seen in catalog data.
VAICO V10-0433 Aftermarket replacement reference seen in catalog data.
Best-fit confirmation tip: Compare the photo, the old tank shape, the cap neck, the hose positions, and the part number before ordering. If unsure, ask us to verify fitment.

Symptoms of a Faulty Expansion Tank

  • Coolant warning light or low coolant level messages.
  • Visible cracks, staining, or damp coolant residue around the tank.
  • Loss of pressure, bubbling, or coolant smell in the engine bay.
  • Overheating, unstable coolant level, or repeated top-ups.
  • Cap seal wear causing pressure loss and poor cooling performance.
Replacing a worn or cracked tank helps protect the engine from overheating and helps the cooling system hold pressure correctly.

Fitting Instructions, Tools & Labour Guide

Step Detail
1 Allow the engine to cool fully before opening the cooling system.
2 Remove the cap carefully and inspect the old tank for cracks or staining.
3 Transfer sensors/caps/hoses only if they are serviceable and match the replacement tank.
4 Install the new tank, refit hoses, and secure the clips.
5 Refill coolant to the correct level and bleed the system as required by the vehicle.
6 Check for leaks, warning lights, and correct operating temperature after a short test drive.
Required Tools Typical Repair Time Garage Cost Guide
Basic hand tools, hose clamp pliers, funnel, gloves, correct coolant, tray, rags Approx. 30-60 minutes Cost = labour hours × hourly rate
Static labour cost guide:
0.5 hour at £60/hr = £30.00
0.5 hour at £80/hr = £40.00
1.0 hour at £60/hr = £60.00
1.0 hour at £80/hr = £80.00

A live calculator would require active content, which is intentionally omitted for eBay compliance.

Why Buy a Better Used Original Part?

A quality original part can be a smarter choice than a low-cost copy because the fit, hose positions, mounting points, and material quality are matched to the vehicle design. That helps reduce comebacks, saves time during installation, and improves the chance of a first-time fix.

Buying used can also deliver major savings compared with buying new, while still keeping the correct factory fitment and avoiding poor-quality pattern parts.

We also provide repair and fitting services subject to availability, and we stock more than 25,000 parts on the shelf at any one time.

Collections, Postage & Business Information

  • Collections: 7 days a week until 8pm by appointment, including bank holidays by prior appointment.
  • Postage: Worldwide postage through eBay GSP where eligible.
  • VAT: Global VAT scheme — no VAT is charged.
  • Returns: 50% restock fee applies to returns under “Doesn’t Fit” or “Item not as Described” where the fitment was clearly stated.
  • Address: Buyers must ensure checkout address is correct as we cannot change it for them after purchase.
  • Other service: We buy cars for cash with nationwide collection and same-day payment.

WhatsApp QR Code for Collections

WhatsApp QR code for 07495972152

Scan to contact us on WhatsApp for collection arrangements, fitment help, or availability checks.

This QR code opens a WhatsApp chat link to the number shown above.

Small Business & Recycling Message

Buying from a local small business helps keep specialist automotive knowledge in the community. Recycling good used parts also reduces waste, keeps usable materials in circulation, and lowers the demand for unnecessary new production. 🌍🔧

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