Single Intake Valve\n\nCompatible with: GM 3.1L 189/3.4L 207 (Enginetech V3532)\nNominal Stem Diameter: 8.00 mm\nET Stem Diameter: 0.3139 inches\nStandard Head Diameter: 1.718 inches\nET Head Diameter: 1.718 inches\nValve Length: 4.713 inches\nNumber of...