Parts catalog 4) Komatsu: XA3351 (4) INCLUDED IN XA3351 HIGH PRESSURE RELIEF VALVE Komatsu XA4077 (4) INCLUDED IN XA4077 UPPER SERVICE ASSEMBLY KIT. Komatsu XA4118 (4) INCLUDED IN XA4118 SEAL KIT. Komatsu XA4122 (4) INCLUDED IN XA4122 SEAL KIT. Komatsu XA4124 (4) INCLUDED IN XA4124 SEAL KIT. Komatsu XA5113 (4) INCLUDED IN XA5113 SPRING KIT. Komatsu XK0321 (4) INCLUDED IN XK0321 FRONT SUSPENSION KIT. Komatsu XK1301 (4) ORDER XK1301 SHOE RETAINER KIT. Komatsu 1 2 :