Coolant Thermostat FIRST LINE FTK398 OE Ref 03L 121 111 AC

Key Specification:
  • EAN: 5038068516800
  • OEM Reference number: 03C121111AC
  • Supplementary Info: THERMOSTAT KIT
  • Supplementary Info: with gaskets/seals
  • PURPOSE GROUP: Coolant
Sale
£ 79.00
£ 62.82 excl. VAT
In Stock
SKU:FIRST LINE FTK398
BrandFIRST LINE
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EAN
5038068516800
OEM Reference number
03C121111AC
Supplementary Info
THERMOSTAT KIT
Supplementary Info
with gaskets/seals
PURPOSE GROUP
Coolant
Housing Type
with housing
Housing material
Plastic
Opening Temperature [°C]
87

Trusted Coolant Thermostat FIRST LINE OE Ref 03L 121 111 AC for Long-Lasting Performance

Engineered to replace OEM Part Number 03C121111AC, this Coolant Thermostat FIRST LINE OE Ref 03L 121 111 AC is the ideal choice for your AUDI, SEAT, SKODA, VW. Manufactured by FIRST LINE, it offers unparalleled reliability and performance. Available at £79.00 (VAT included), it’s marked with Reference Number FTK398 and EAN EAN: 5038068516800 for easy tracking.

At e Auto Parts, we’re committed to providing top-quality Engine Cooling System components. This Coolant Thermostat FIRST LINE OE Ref 03L 121 111 AC is crafted with precision, ensuring durability even under the most demanding road conditions. Plus, its straightforward design makes installation simple, whether you’re a professional or tackling a DIY project.

  • with gaskets/seals
  • THERMOSTAT KIT

Fits the following vehicles:

  • AUDI
    • A3 (8P1) From 05/2003 to 12/2013
    • A3 Convertible (8P7) From 04/2008 to 05/2013
    • A3 Sportback (8PA) From 09/2004 to 12/2015
  • SEAT
    • ALTEA (5P1) From 03/2004
    • ALTEA XL (5P5, 5P8) From 10/2006
    • LEON (1P1) From 05/2005 to 12/2013
  • SKODA
    • OCTAVIA II (1Z3) From 02/2004 to 06/2013
    • OCTAVIA II Combi (1Z5) From 02/2004 to 06/2013
    • SUPERB II (3T4) From 03/2008 to 05/2015
    • SUPERB II Estate (3T5) From 10/2009 to 05/2015
    • YETI (5L) From 05/2009 to 12/2017
  • VW
    • BEETLE (5C1, 5C2) From 04/2011 to 07/2019
    • BEETLE Convertible (5C7, 5C8) From 12/2011 to 07/2019
    • EOS (1F7, 1F8) From 03/2006 to 08/2015
    • GOLF PLUS V (5M1, 521) From 12/2004 to 12/2013
    • GOLF VI (5K1) From 10/2008 to 12/2014
    • GOLF VI Estate (AJ5) From 07/2009 to 07/2014
    • JETTA III (1K2) From 09/2004 to 12/2013
    • PASSAT B6 (3C2) From 03/2005 to 12/2010
    • PASSAT B6 Estate (3C5) From 08/2005 to 11/2011
    • PASSAT CC B6 (357) From 02/2008 to 01/2012
    • SCIROCCO III (137, 138) From 05/2008 to 11/2017
    • TIGUAN (5N_) From 09/2007 to 07/2018

Before ordering, confirm compatibility using our registration lookup tool or cross-check the OEM Part Number 03C121111AC. Experience fast delivery and exceptional service by shopping with e Auto Parts!

Reference number(s) comparable with the original spare part number
OE reference number(s) comparable with the original spare part number
  1. Berry
    1 July, 2025
    elderly car so really pleased that the part could be supplied :-) Correct part arrived swiftly - excellent - thank you
  2. Edward & Susan
    20 May, 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 Jan, 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, 2024
    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, 2024
    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.