This temperature sender switch matches OEM part numbers 1877731M93, 1877731M92 and 1877731M1 perfectly.It fits a wide selection of classic tractor models like 135, 158, 168, 350 and 3050. It reads engine working temperature with high precision.Meanwhile, it delivers stable signals to the tractor instrument dashboard. Farm operators can keep an eye on real-time temperature during field operations.Made from heat-enduring and rust-proof raw materials,this part keeps running reliably even in harsh agricultural working surroundings.It conforms to official OEM specifications, and is a solid aftermarket choice for daily tractor upkeep and repair jobs.