Skip to content
View in the app

A better way to browse. Learn more.
Ford Owners Club - Ford Forums

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.



Join the Independent Ford Owners' Club

Our community has been built by enthusiasts, for enthusiasts, and proudly run by Ford owners' for over 18 years. As an independent, non-official club, everything you’ll find here, advice, support, and opinions, comes directly from members with genuine Ford ownership experience.

Join our friendly community... it's Free!

 

Mk 3 mondeo expansion tank cap

avpinstarter
avpinstarter
in General Ford Related Discussions

Featured Replies

Could any one please tell me what is the correct expansion tank cap for a mk3 mondeo petrol 1.8 The original one's details have worn off .

I have googled my problem and i have a part no 98BB 8100 AB which is a cap with a pressure of 120 kpa  how ever in the haynes manual it states the cap should be 124-145kpa  the working pressure of the cooling system is 138kpa . The reason for my query is a small amount of coolant is being vented from the hole in the tank neck where i assume it releases pressure.

I hope some kind soul can help me with this problem.

Regards 

Tom

  • Quote


    The Ford part number for your engine is: 1230968

  • Quote
    • Author

    Thanks luke

  • Quote

    Hi this may or may not help but if the coolent is getting past the cap along bottle neck or vapours are escaping past the seal a few passes of plumbers tape on the bottle treads will solve it and re seal the cap / long or short term 

  • Quote

    • Latest Deals

    Ford UK Shop for genuine Ford parts & accessories

    Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via the club

    Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.

    Guest
    Reply to this topic...
    Go to topic listing

    The "Digestive"

    • 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
      Steve
      Steve
      • 222 views





    Background Picker
    Customize Layout

    Account

    Navigation

    Search

    Search

    Configure browser push notifications
    Chrome (Android)
    1. Tap the lock icon next to the address bar.
    2. Tap Permissions → Notifications.
    3. Adjust your preference.
    Chrome (Desktop)
    1. Click the padlock icon in the address bar.
    2. Select Site settings.
    3. Find Notifications and adjust your preference.