One New Aftermarket Qty 8: O-Ring SealTech Info:-Width: 1.50"-Depth: 0.24"Made to Fits Caterpillar:Bulldozer Models: 8S, 977AReplaces Part Number(s): 8M-4991,8M4991Engines Models: 1673B, 1693, 1674, D334, D333A, D333B, D333C, 3304, 3306, 3304B, D379A, D379B, D399, D349, D346, D348, D398A, D398B, D330C, D343, 3406, D320A, D398, D379, G343, G398, G399, G379A, G379Replaces Part Number(s): 8M-4991,8M4991Generator Models: SR4Replaces Part Number(s): 8M-4991,8M4991Hydraulic Control Models: 183BReplaces Part Number(s): 8M-4991,8M4991Landfill Compactor Models: 826BReplaces Part Number(s): 8M-4991,8M4991Motor Grader Models: 16, 12EReplaces Part Number(s): 8M-4991,8M4991Other (Truck) Models: 769, 773, 777, 769BReplaces Part Number(s): 8M-4991,8M4991Pipelayer Models: 583K, 561BReplaces Part Number(s): 8M-4991,8M4991Ripper Models: 8DReplaces Part Number(s): 8M-4991,8M4991Scraper Models: 666, 666B, 657, 657BReplaces Part Number(s): 8M-4991,8M4991Soil Compactor Models: 825BReplaces Part Number(s): 8M-4991,8M4991Track Loader Models: 977H, 977K, 963, 973, 963B, 983Replaces Part Number(s): 8M-4991,8M4991Track-Type Tractor Models: D8KReplaces Part Number(s): 8M-4991,8M4991Tractor Models: 772, 776, 768BReplaces Part Number(s): 8M-4991,8M4991Tractor Loader Models: 977KReplaces Part Number(s): 8M-4991,8M4991Vibratory Compactor Models: CB-534Replaces Part Number(s): 8M-4991,8M4991Wheel Dozer Models: 834, 824B, 824Replaces Part Number(s): 8M-4991,8M4991Wheel Loader Models: 988Replaces Part Number(s): 8M-4991,8M4991Wheel Tractor Models: 627, 621, 623, 637, 631C, 641, 633C, 651, 657Replaces Part Number(s): 8M-4991,8M4991