Balboa M7 2kw Heater Element / Tube Assy replacement - Suit GL/EL & GS/VS Spa Systems

Balboa Water Group 58145 heater assembly with 2.0kw incoloy element and SS heater tube, 
2 x m7 temperature sensors

Used on Balboa GS and GL series spa control systems.
Can be used on BP601 and BP2100 series control systems.

Does not suit:
GS100, BP200, Revolution, Viper, Colossus series.

different to systems with pressure switches
(for those systems, use Aquatemp tefel elements of correct rating.)

Suits common models including but not limited to:
GS501z, GS510, GS520, GS523DZ, GL2000, GL8000, BP601, BP2100, BP2600