Description
VDO CHT / Water / Oil Temperature Sender
Description
A genuine VDO temperature sender suitable for use as a cylinder head, oil, or coolant temperature sensor on Rotax 912, 912ULS, and 914 engines. This versatile sender is commonly installed in Rotax factory applications and is compatible with most analogue VDO-style gauges and many EFIS systems.
Key Features
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Suitable for measuring CHT, oil, or coolant temperature
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Compatible with Rotax engines using M10 x 1.5 threaded ports
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Standard VDO resistance curve for accurate gauge readings
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Temperature range typically rated up to 150 °C (300 °F)
Benefits
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Multi-purpose use allows one sender type to cover multiple engine systems
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Helps reduce inventory complexity with one universal-fit sender
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OEM-quality construction ensures consistent, reliable temperature readings
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Resilient to vibration, heat, and fluids in the engine compartment
Application Notes
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Commonly installed in the cylinder head, oil gallery, or coolant circuit
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Requires proper thread sealant for NPT fittings or crush washer for metric threads
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Ensure secure wiring connection to avoid false readings
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Validate temperature response using a test gauge or hot water immersion if needed
