The BRP / OMC part number 0585038 (also written as 585038) is a genuine factory-original thermal sensor: a cylinder head temperature switch assembly. It monitors the motor's engine temperature block to protect against catastrophic overheating.

New Old Stock (NOS) — genuine factory original part.

Fitment and Compatibility

This temperature switch is explicitly designated for high-horsepower, V-block multi-cylinder outboard applications:

• Horsepower Range: Primarily engineered for heavy-duty 175 HP to 250 HP V6 engine setups.
• System Specifics: Designed for FFI (Ficht Fuel Injection) and DFI model variants built from 1993 and newer.
• Cylinder Bank Orientation: This specific switch monitors the starboard (right-hand) cylinder head bank.

Component Logic & Supersedions

• Warning System Trigger: If the cylinder head temperature passes safe operational limits, this switch closes a circuit (sending a signal along the Tan/Black stripe wire lead) to trigger the dashboard warning horn and force the outboard powerhead into “S.L.O.W.” (Speed Limiting Optimisation Warning) limp mode to prevent engine damage.
• Superseded History: This item replaces older legacy OMC part number 0584650 (or 584650). It has also been cross-referenced with component updates under number 0769507.