SKU: LON52-43505
MPN: 52-43505
The Temp Sensor 340deg w/ QD Lead & Manifold Fitt by LONGACRE is purpose-built for engine builders, tuners, and performance enthusiasts who demand real-time exhaust manifold temperature monitoring. Whether you're developing a high-horsepower street engine, tuning a road race platform, or managing heat in a turbo application, this sensor delivers accurate data critical to fuel mapping, ignition timing optimization, and detonation prevention. Quick-disconnect functionality eliminates guesswork during dyno sessions and trackside diagnostics, allowing rapid sensor swaps without breaking harness connections.
Built on proven LONGACRE engineering, this thermocouple-based temperature sensor measures manifold heat up to 340 degrees Fahrenheit—a critical threshold for detecting lean-running conditions and combustion anomalies that precede engine failure. The quick-disconnect (QD) lead design enables hot-swap capability without full harness removal, saving setup time between calibration pulls. The manifold fitting threads directly into standard 1/4-inch NPT bosses found on most fabricated headers and OEM manifolds, ensuring secure installation with zero vibration-induced drift. Compact dimensions (3.5 x 1.15 x 3.65 inches) and minimal weight (0.06 lbs) prevent interference with hoses, belts, or intake runners on tight engine bays.
This sensor is essential for anyone running an engine management computer (EFI, Mega-Squirt, or OEM PCM with datalogging) who needs continuous temperature feedback for closed-loop tuning. Road racers benefit from knowing peak manifold temps to validate cooling system performance, while bracket racers and drag tuners use this data to correlate fuel mixture changes with combustion chamber conditions. Installation requires a 1/4-inch NPT manifold bung; most custom header shops can drill and tap one in minutes. The 340-degree range covers street, road race, and forced-induction applications without saturation, making this sensor a no-compromise choice for serious engine development.
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