Gecko M-Class Spa Replacement Control [3 Pump] [4.0kW] (3-74-7036) circuitboards A spring is one of

A spring is one of the internal parts that helps a dial valve feel responsive and mechanically complete

This white retrofit drain grate supports optimal flow performance while maintaining a clean

When the original assembly wears out

That keeps the repair efficient while restoring cleaner control behavior and internal function

while the Ultima fit preserves the original pump platform relationship

Gecko M-Class Spa Replacement Control [3 Pump] [4.0kW] (3-74-7036) circuitboards A spring is one ofA replacement spa control helps restore coordinated equipment management in a compatible M Class setup, and this Gecko version is designed for 3 pump applications with a 4. 0kW heater using the 3 74 7036 reference. When a main control pack becomes unreliable, the spa can lose synchronized management across pumps, heating, and related features. The 3 pump design gives this unit practical value because replacement control packs work best when they match