The part 1-51864-1 is a TERMINAL,PIDG R IR 14 8 from the AMP Brand by TE Connectivity. It is a high-quality and reliable terminal that is designed for use in various electrical applications. With its PIDG (Pre-Insulated Diamond Grip) design, it provides a secure and effective connection for wire sizes 14AWG to 8AWG. The terminal is made from premium materials to ensure durability and resistance to corrosion. It is an essential component for professionals in the electrical and automotive industries.