9X3977 - SEAL-RING 5K4500 Fits Caterpillar (Fits CAT) model-FC400R and is used in the

and is used in the engine ignition system to deliver reliable combustion across Fits John Deere 10-Series

Use the aluminum 8's for personal descent and the steel 8's in conjunction with a sling for light-duty rigging

Steering Shaft Teeth: 6

Replaces Part Number: 0417605

9X3977 - SEAL-RING 5K4500 Fits Caterpillar (Fits CAT) model-FC400R and is used in theOne New Aftermarket Replacement Backup Seal Ring Fits Caterpillar (Fits CAT) Wheel Loaders, Wheel Dozers, Underground Loaders, and Articulated Trucks This aftermarket replacement backup seal ring (9X3977) is used in hydraulic systems across a wide range of Fits Caterpillar (Fits CAT) construction equipment. Backup seal rings prevent O ring extrusion under high pressure hydraulic conditions, protecting the primary seal and extending the service life of