S&S Breather Gear and Washer Set for 1977 - 1999 Big Twins
Steel vs. plastic means greater durability and strength. Steel breather gears have better dimensional stability, especially at high temperatures. Abrasive particles are less likely to get embeddedin a steel gear body. Embedded particles can damage the crankcase breather gear cavity.
Fits 1977 - 1999 Big Twins