Coolant Tank Cap AMCP-18123-VW007 OE Ref 5Q0121321

Key Specification:
  • COOLANT TUBES: 4
  • Fabrication Number: AMCP-18123-VW007
  • OEM Reference number: 4N0121403H
  • PURPOSE GROUP: Coolant Tank
  • Supplementary Info: EXPANSION TANK CAP
Sale
£ 33.00
£ 25.24 excl. VAT
In Stock
SKU:AMCP-18123-VW007
BrandAftermarket
  • Free Shipping
    For orders over £75
  • Top-Notch Support
    Monday To Friday
  • 100% Safety
    Only secure payments
  • Hot Offers
    Discounts up to 70%
COOLANT TUBES
4
Fabrication Number
AMCP-18123-VW007
OEM Reference number
4N0121403H
PURPOSE GROUP
Coolant Tank
Supplementary Info
EXPANSION TANK CAP
Supplementary Info
TANKS
Supplementary Info
AUDI A3 - Q2 - TT - SEAT ATECA - LEON - SKODA FABIA III - KAROQ - KO
Supplementary Info
DIAQ - OCTAVIA III - SUPERB III - YETI - VW GOLF VII - PASSAT B8 - TO
Supplementary Info
UAREG - UP

Coolant Tank Cap OE Ref 5Q0121321 – Aftermarket – OEM 4N0121403H

This Coolant Tank Cap OE Ref 5Q0121321 is supplied by Aftermarket as a replacement for OEM reference 4N0121403H. It is intended for use in selected AUDI, SEAT, SKODA, VW vehicles and designed to meet original equipment fit and functional requirements.

The part is identified by manufacturer reference AMCP-18123-VW007 and EAN , allowing accurate identification and compatibility verification prior to installation. It is suitable for replacing worn, damaged, or non-functioning components where dependable operation is required.

  • EXPANSION TANK CAPTANKSAUDI A3 - Q2 - TT - SEAT ATECA - LEON - SKODA FABIA III - KAROQ - KODIAQ - OCTAVIA III - SUPERB III - YETI - VW GOLF VII - PASSAT B8 - TOUAREG - UP

Fitment & Compatibility

Correct part selection is essential to ensure proper fitment. Please confirm compatibility by matching the OEM reference number or using the vehicle registration lookup tool before ordering.

This part is compatible with selected AUDI, SEAT, SKODA, VW models. Detailed compatibility information is available in the Compatibility section of this page.

If this part is not suitable for your vehicle, browse alternative options in our Engine Cooling System category.

Reference number(s) comparable with the original spare part number
OE reference number(s) comparable with the original spare part number
  1. Berry
    12 Nov, 2025
    elderly car so really pleased that the part could be supplied :-) Correct part arrived swiftly - excellent - thank you
  2. Edward & Susan
    20 OCT, 2025
    These guys were real helpful when I was looking for an EGR valve. Great communications and fast delivery, the valve did exactly as It was meant to do and it was a lot cheaper than everywhere else I looked. I'll be using eAuto Parts again. Top banana.
  3. Charlie
    27 AUG, 2025
    eAuto Parts made me happy because it only took 2 minutes to order the part and at a very good price, also very quick delivery, will definitely deal with them again.
  4. Adam Taylor
    12 May, 2025
    Quick enquiry response, easy buying and quick delivery. Quality of goods was good and fitted with no problem (Suzuki bonnet hinges.) recommended.
  5. Helena Garcia
    2 January, 2025
    The correct part was rapidly identified and located, and was despatched promply to my chosen repairer in time for the work to be done on schedule. Very pleased with the service and will be using eAuto Parts again.