R47465 rockguard Rear L/H Fits Case 450C, 455C, Long Track, 550One New Aftermarket Replacement Rear Left Hand Rock Guard for Case Crawler Dozers This aftermarket replacement rear left hand (L H) rock guard is designed to protect the undercarriage of Case crawler dozers. Rock guards shield the track frame and undercarriage components from rocks, debris, and ground material that can cause costly damage and accelerated wear during operation on rugged terrain. This is the rear position, left hand side guard verify