Ensure your engine's optimal performance with the 2pc Napa Echlin TS6640 Temperature Sender, designed for precision and reliability. Compatible with a range of models including Catalina, Phoenix, Firebird, and LeSabre, these sensors are built to fit seamlessly in the engine compartment, streamlining installation. Crafted with durability in mind, the metal construction stands up to the demands of everyday use. The set includes two temperature sensors with 1/2x14 thread diameter and mini-blade terminals, wired for a direct fit with a gray connector. Each sensor is designed to match OEM specifications, with part numbers TS6640, 25037345, and others cross-referenced for compatibility. Easy installation and a dependable direct fit make these sensors a straightforward solution for maintaining your vehicle's performance. Exact item set is shown. New old stock with original packaging. Each item is a 1 blade switch with a threaded base. 138-156 Ohms Resistance At 220 Deg F. 1/2" x 14 NPTF. Made in USA. No returns on installed items or partial sets. Please review our business policies in our store for information regarding returns, shipping and warranties.