Volvo Penta Temperature Sensor 21126692

Volvo Penta Temperature Sensor Part Number 21126692

The Volvo Penta Temperature Sensor (OEM Part No. 21126692) is a genuine OEM coolant temperature sender designed for Volvo Penta marine engines. It delivers accurate temperature signals to the engine management system and instrument gauges, protecting your engine from undetected overheating.

Part Details

• Part Number: 21126692
• Brand: Volvo Penta
• Official Product Type: Temperature Sensor / Coolant Temperature Sender
• MPN: 21126692
• System: Engine Cooling & Monitoring / Engine Management

Compatible Applications

• Volvo Penta marine diesel and gasoline engines confirm fitment using your engine model, serial number, and the Volvo Penta parts diagram before ordering
• Serial number requirements may apply verify your serial number break to ensure this part number is correct for your engine build date
• Specific model compatibility should be confirmed via the Volvo Penta parts diagram for your engine family

System & Diagram Position

This sensor is part of the engine cooling and monitoring system. It appears in the Volvo Penta engine management and instrumentation diagram. Refer to your engine’s parts diagram to confirm the correct diagram position for your application.

Parts Desk Insights

Best use case: This is the correct replacement when your temperature gauge is reading erratically, pegged high or low, or when you’re getting a coolant temperature warning with no other obvious cause. It’s also the right part to replace proactively during a cooling system service on higher-hour engines.

Common issues: Temperature sensors are a frequent cause of false overheat alarms on Volvo Penta engines. Customers often replace thermostats and impellers before identifying the sender as the root cause. If your gauge is fluctuating or your alarm is triggering without a confirmed overheat, this sensor is a cost-effective first step.

Related Parts

• Volvo Penta Temperature Sender Gasket 11998 replace the gasket whenever servicing this sensor
• Volvo Penta Sensor 22422785
• Volvo Penta Temperature Sensor 3862500

Service Interval

Inspect the temperature sensor during scheduled cooling system service. Replace immediately if readings are erratic, the warning system activates without a confirmed overheat, or the sensor shows signs of corrosion or physical damage. Consult your Volvo Penta service manual for hour-based replacement recommendations.

Technical FAQ

Q: How do I know if this is the right sensor for my engine?
A: Cross-reference your engine model, serial number, and the Volvo Penta parts diagram. If your current sensor carries part number 21126692, this is a direct OEM replacement.

Q: Is this a genuine OEM part?
A: Yes. This is a genuine Volvo Penta OEM temperature sensor, not an aftermarket substitute.

Q: My temperature gauge is reading incorrectly is this the right fix?
A: An erratic or inaccurate gauge reading is one of the most common symptoms of a failing temperature sender. Replacing this sensor is a logical and cost-effective first step before investigating the gauge or wiring harness.

Q: Should I replace the gasket at the same time?
A: Yes. It is best practice to replace the sender gasket (Part No. 11998) whenever removing and reinstalling a temperature sensor to ensure a proper seal.