Lot of 18 WK0166 Brass Temperature Sender Sensor Switch Engine Gauge Auto

Item: Brass temperature sender / sensor switches for automotive or engine gauge applications. Lot of 18 Part numbers/markings: Individual boxes labeled WK0166; outer bag label shows code 100-525-72. Design: Cylindrical brass body with threaded section and hex nut, black insulator, and small male threaded electrical stud terminal on one end. Packaging: Several units are in individual white boxes, others are in clear plastic sleeves, and some are loose as shown. Quantity: Multiple sensors included; total count is exactly what is visible in the listing photos. These appear to be generic or aftermarket parts; specific brand or vehicle compatibility is not indicated on the packaging.