Reese 580403, 580408, 63225, 63230 coupler locks will all work with this type of coupler. I have the 580408 and it works great with my Windjammer
Rick & Debbie; Brandy & Schnoodle Dexter & Fritz R.I.P. the Doxie "Kids"
2015 Jayco Pinnacle 36RSQS 5'er
2013 Chevy Silverado 3500HD LTZ, 6.6L Diesel Dually; B&W Goose Neck and Companion 5'er hitch