580615 Plastic breather valve spacer set, .130" to .165"

This plastic breather valve spacer set is designed for late 1977 to 1999 Big Twin models, excluding Twin Cam engines. Sold as a set of 8, it includes a range of sizes from .130 inch to .165 inch to help you achieve the perfect end play. These spacers feature the large hole design and must only be used with plastic breather valves. While these are available for stock-style maintenance, many mechanics recommend upgrading to a steel breather valve to prevent the distortion and crankcase damage often associated with the factory plastic units. Ensure you do not intermix these plastic spacers with steel breather components.