1456858 Seal-Exhaust Fits Caterpillar Models

One New Aftermarket Replacement Exhaust Valve Stem Seal for Caterpillar (Cat) 3054 / 3056 Engines

This aftermarket exhaust valve stem seal (also cataloged as 145-6858) services the cylinder head exhaust valves on Caterpillar 3054 and 3056 series diesel engines. A worn or leaking exhaust valve stem seal allows oil to enter the combustion chamber, resulting in blue smoke, increased oil consumption, and reduced engine performance. Replacing this seal restores proper valve stem lubrication control and engine efficiency.

Compatible Models

Caterpillar Asphalt Pavers: AP-600, AP-650B, AP-655C, AP-800C, BB-760, BG-225C, BG-2255C, BG-230

Caterpillar Backhoe Loaders: 416C, 416D, 420D, 424D, 426C, 428C, 428D, 430D, 432D, 436C, 438C, 438D, 442D

Caterpillar Excavators: 312B L, 312C, 315B L

Caterpillar Forestry / Forest Products: 550B, 554, 560B, 564, 574B

Caterpillar Paving Compactors: CB-434C, CB-534C, CB-535B, CP-323C, CP-433C, CP-433E, CP-563E, CP-573E, CP-663E, CS-323C, CS-431C, CS-433C, CS-433E, CS-563E, CS-573E, CS-583E, CS-663E, CS-683E, PF-290B, PF-300B, PS-150B, PS-200B, PS-300B, PS-360B

Caterpillar Telehandlers: TH62, TH63, TH82, TH83, TH103, TH350B, TH355B, TH360B, TH460B

Caterpillar Wheel Loaders: 908, 924G, 924GZ, 928G, 930G

Caterpillar Engines (Industrial / Marine / Generator Set): 3054, 3054B, 3056, 3056E

Replaces Part Number(s):

1456858, 145-6858

New aftermarket replacement part - not remanufactured, not used.