I replaced the hoses to the heater matrix on both of our Fs just over a year ago and posted some information about the job here. There was also an article about the job in a recent issue of FasTForward and MG Driver. A copy of the article can be found here: https://mg-stuff.stlbrits.com/kb/mgf-heater-hoses-pipes-replacement/

The replacement of the hoses through the blanking plate can be done from under the car, but you have to start inside the car as the new hoses get attached to the heater pipe and then pushed through to the rubber blanking plate.

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