Before you are tempted to go for a cheap low cost spare part, have a little think about the repercussions of doing so, as it may have an impact on your boiler. Knock-off parts are usually are made with poor materials which are not made for long-last, making them usually substandard to our suggested products.
Some of the things that these counterfeit parts can often result in a system failure to your boiler, although the worst things that can happen is the worst case is, someone getting into an accident. Once an issue like this happens you can’t blame the product for the incident, as the responsibility lies with yourself for the ill-chosen part for the application.
Even though it’ll fall on the repair engineer rather than the product. We would always suggest and recommend that you buy an official part – such as the one here.