Single Intake Valve\n\nCompatible with: Mazda 2.6L G Series (IM2434)\nNominal Stem Diameter: 7.00mm\nET Stem Diameter: 0.2750 inches\nStandard Head Diameter: 1.311 inches\nET Head Diameter: 1.311 inches\nValve Length: 4.437 inches\nNumber of Grooves:...