This GM TH350 Automatic Transmission Modulator Valve is a standard product from Standard Motor Products, with OE/OEM Part Number TM-45 and Manufacturer Part Number TM-45. It is designed for use in automatic transmission modulator systems and is compatible with a range of vehicles in the 1975-1985 time frame including Oldsmobile, Buick, GMC, Pontiac, Chevy and more!!