Looking for a high-quality valve for your GM or Chevrolet vehicle’s engine? Check out the E9151B valve, featuring a tapered chrome stem, 8.00MM nominal stem diameter, 1.500″ standard head diameter, and 4.539″ valve length. This valve is compatible with a range of engine types, including the 2.5L / 151 OHV L4 8V “1,2,5,9,R,U,V” Pont. 4.000″ Bore 77-92 and the 2.5L / 151 OHV L4 8V “A,E” Pont. 4.000″ Bore 85-93. Perfect for cars, trucks, vans, and SUVs, this valve is sure to meet your needs.