Raypak 185/R185A/R185B Bypass Shaft (006717F) furnas and this Balboa VS510SZ BP7

and this Balboa VS510SZ BP7 4 kW Retrofit Kit is designed for compatible applications where the original control pack has become unreliable or outdated

Raypak cast iron return header

The simplified P1 and Light layout gives this overlay practical value because replacement overlays work best when the button labeling matches the exact function mix of the topside panel underneath

This component is ideal for restoring worn

Raypak 185/R185A/R185B Bypass Shaft (006717F) furnas and this Balboa VS510SZ BP7The Raypak bypass shaft is designed for compatible 185, R185A, and R185B heater applications where the supported bypass assembly needs a new shaft. A shaft like this is useful because it helps the bypass mechanism move and function properly, contributing to more controlled internal water management behavior. This replacement is especially useful when the original shaft is bent, worn, corroded, or otherwise no longer dependable. Matching the correct