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Focus Mk1 Thermostat / housing

Henry04
Henry04
in Ford Focus Club

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Hi Guys. I seem to have a leak at the thermostat /housing on My I.6  mk1 Focus. Any advice please on a replacement? EBay Euro car parts any to avoid? Many Thanks

  • Quote


    Hi,

    There are a few options for 1.6 petrol in Mk1 Focus, so it may not be easy to find the right part.  Being a 2004 model I am expecting it to be the Sigma engine, which is very similar to the Mk2 Focus 1.6.

    If not already aware, the thermostat is not in the usual place on these, it's just an empty plastic box at the top near the coil pack.  The thermostat is under the alternator at the belt end of the engine.  As it's so awkward to access, and prone to cracking with temp changes, I would pay the extra for a genuine part personally.

    Here is one example: Genuine Ford Fiesta Mk4 Focus Mk1 Puma 1.7 EFi Thermostat Housing 1493599 | eBay UK

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    • The Digestive Forum Roundup (24th May - 31st May 2026)

      Steve ·
      The Digestive Forum Roundup (24th May - 31st May 2026) We hope this email finds you well and enjoying your week. As always, our forum has been buzzing with activity, so we’ve compiled the highlights for you. Plenty of interesting discussions are taking place, especially around the Ford Focus and Fiesta models. Starting off with the Focus, many members have been discussing issues with the Emergency Call System, particularly in the Mk4 model. PLB raised concerns about persistent malfunctions, a se
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