Fits Rockwell International: 18N 4 3731X, 18N4-3721, 18NYS38 27A, 18NYS38-16A, A-3260-C-1147. END YOKE W/SLINGER. Ending Soon. 1 Million+. Replaces OEM: 6.5-4-3731X. Corner & Edge Protectors. Inappropriate application will lead to the dismissal of the warranty.