This is one brand new injector rail fuel pressure regulator from Standard Motor Products. This replaces several OE part numbers; please refer to OEM Interchange below for details. Please check the vehicle compatibility information and visually check the picture of the part against the part you are replacing in order to determine if this part is correct for your application. This is a brand new part; it has never been installed on a vehicle. This part is correct for the following applications. 1980 Cadillac Eldorado w/ Diesel 5.7L engine. This part is interchangeable with the following parts. We want your experience with us to be a happy one.