Cracked high pressure fuel pump sensor

[TommyC]

Was just doing my weekly fluid checks and noticed a crack on one of the high pressure fuel pump sensors.

Car was on MRC's dyno 12 days ago and was running fine, so I guess it hasn't caused any miss fueling yet. Dabbed a drop of epoxy on the area to prevent any further cracking hopefully.

Obviously going to get this replaced asap. Looks like the sensor comes as part of the whole pump assembly so if i want new have to get the whole part for 200ish or i have seen used sensors on ebay which look like they screw into the main body.

Any experiences with these? Easy job to fit or is it a trip back to MRC?