VDO Temperature Sender 240° F - 1/8-27 NPTF

The VDO Temperature Sender 240° F - 1/8-27 NPTF is a precision engine monitoring component designed for boaters and marine mechanics who demand accurate coolant temperature readouts on the water. After decades of running everything from center consoles to offshore rigs, you know that consistent temperature monitoring is non-negotiable—it's the difference between a day of fishing and a breakdown miles from shore. This sender integrates seamlessly with VDO gauge systems, providing real-time thermal data that keeps your engine operating within safe parameters.

Built to OEM marine standards, the VDO Temperature Sender features a 1/8-27 NPTF threaded connection that threads directly into engine block ports—the same fitting pattern found on most production marine engines. The 240° F maximum reading range ensures full visibility across normal operating conditions and thermal stress events. This sender is engineered as a variable resistor that communicates proportionally with your VDO gauge; as coolant temperature rises, electrical resistance changes, and your gauge needle responds accordingly. The sender case is grounded to common ground, meeting marine electrical safety protocols and eliminating false readings caused by poor grounding.

Boaters operating older Volvo, Mercruiser, or other engines with factory VDO instrumentation will find this sender essential for gauge replacement or system restoration. Because senders are matched to gauges by maximum dial reading, verify that your existing gauge reads 240° F maximum before ordering—mismatched senders and gauges will produce inaccurate readings. Installation requires basic hand tools and a small amount of marine sealant tape on the threads; most operators complete the swap in under 30 minutes. Weight just 0.1 lbs and measuring 2 x 3 inches, this compact sender fits tight engine compartments without modification.