W103 elements are replacement element for U39 type heaters.
Each replacement element of this type comes with integral thermostat, 2 metres of cable and sealing washer. Longer cables can be supplied on element providing we are advised at time of ordering.
We recommend that existing canister be cleaned then element sealed in using Loctite 577 or similar sealant. It has a 2.0″ BSPP thread and is also used as replacements in a number of other heaters.