The removable jet cover on the DCOE carburetor makes tuning easy, but it also makes it likely to go missing. This genuine Weber part will fit your 40 / 45 / 50 / 55 DCOE perfectly. Includes the round stamped steel cover, a captive M5x0.8 female wing-head screw, and the small gasket between the cover and screw. The larger Jet Cover Gasket (Part No. WC-41550.002) is sold separately.