Oil Temp Sender 3/8in. NPT 300 Deg

The Oil Temp Sender 3/8in. NPT 300 Deg from LONGACRE is an essential precision instrument for engine builders, performance mechanics, and serious enthusiasts who demand real-time oil temperature monitoring. Whether you're tuning a high-output street engine, managing temperatures during track events, or troubleshooting thermal issues on a modified build, this oil temperature sender provides the accurate data your engine management system or auxiliary gauge cluster requires. Proper oil temperature control is critical—too cold and your oil won't flow efficiently; too hot and viscosity breaks down, destroying bearing film and accelerating wear.

This sender features a 3/8-inch NPT threaded connection, the industry standard for oil passages and sandwich adapters, ensuring compatibility with most modern engine blocks and aftermarket oil filtration systems. The 300-degree Fahrenheit sensing range covers the full spectrum from cold-start conditions to high-load performance scenarios, delivering a linear resistance output that interfaces seamlessly with OEM and aftermarket gauge clusters, data loggers, and ECU inputs. The compact, corrosion-resistant construction withstands the harsh chemical environment inside the crankcase while maintaining long-term accuracy and reliability—critical when you're relying on this reading to trigger cooling fan activation, fuel mixture adjustments, or shift logic in a tuned engine.

This sender is ideal for custom engine builds, turbocharged conversions, racing applications, and any modification where factory cooling capacity has been exceeded or reconfigured. Mechanics installing upgraded cooling systems, electric fans, or data acquisition packages will appreciate the standard 3/8in. NPT port—no adapters needed for most applications. Simply thread it into an available oil passage or sandwich it into your filter mounting block, connect the signal wire to your gauge or ECU, and gain the thermal visibility every serious build deserves. Whether you're validating a new cooling strategy or troubleshooting overheating, accurate oil temperature data is non-negotiable.