I was quoted a £70 call-out fee just to diagnose what I already knew was the issue - the Ideal fitting and service manual I got from everyone’s search engine narrowed it down to this specific part. After a test removal and refit of the faulty part, I took the plunge and ordered this. Delivered within a few days, it was quickly fitted and got my boiler running again, at a fraction of the potential cost!
Received in a loose package and the retainer clip was missing from it.