This new compatible IRCA boiler emersion heater is currently on backorder under EasySearch ID ES391563. This boiler emersion heater is rated at 2500 W. Product details also list 360 mm sensor length and flange dimensions of 48 mm and 24 mm. Further product details include 405 mm length and 17 mm distance fittings. If you need to double-check fit, use Fixit Fox Finder or contact customer services before ordering.