Transmission Temp Switch ZZ - 710-87-88031

- A high-temperature alarm switch that monitors transmission oil temperature and activates an alarm when critical heat levels are reached—designed for marine applications. It threads into the transmission’s oil circuit and features two male spade terminals for simple electrical connection.
-Triggers at approximately 230 °F, offering an early warning to prevent potential damage from overheating.
- Direct replacement for several OEM part numbers, including Mercury/Quicksilver 87‑88031, 87‑813708; Crusader R020037, and Pleasurecraft R020037—ensuring broad compatibility across multiple marine driveline systems.
- Typically considered a normally open switch, closing the circuit to sound an alarm when temperature threshold is exceeded.