278000965 Temperature Sensor for Sea-Doo Sportster 1800 720 1998-1999

Temperature Sensor for Sea-Doo Sportster 1800 720

This temperature sensor (OEM cross-reference 278000965) monitors coolant temperature on the Sea-Doo Sportster 1800 720 so the engine management system can react before overheating damages the powerplant.

Overview

This temperature sensor for Sea-Doo is a direct-fit replacement for the 1998 to 1999 Sportster 1800 720, sending accurate coolant readings to the gauge and warning system. The sensor helps protect your engine by triggering alerts when operating temperature climbs too high. It suits riders replacing a failed or inaccurate factory sender on their personal watercraft.

Built For Performance

• Cross-references OEM part number 278000965 for direct fitment
• Threaded housing installs in the factory port on the 720 engine
• Resistance output calibrated to match original gauge readings
• Sealed electrical connector resists moisture and spray
• Heat-resistant body withstands continuous marine engine temperatures
• Compact design clears nearby hoses and engine components

Fits These Machines

• for Sea-Doo Sportster 1800 720 (1998)
• for Sea-Doo Sportster 1800 720 (1999)

On-The-Job Use

• Replacing an open or shorted factory temperature sender
• Restoring accurate coolant temperature readings on the gauge
• Routine cooling system maintenance on a 720-powered Sportster 1800
• Diagnosing overheating complaints before they become engine failures

Specs At A Glance

Good To Know

Q: Will this sensor work on other 720-powered Sea-Doo models? A: It is listed for the 1998 to 1999 Sportster 1800 720 and cross-references 278000965, so confirm your model and part number before ordering.

Q: Do I need any extra hardware to install it? A: The sensor installs in the factory port and reuses the original connector and sealing method, so no additional adapters are typically required.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.