1678081 Cap-Cshft Fits Caterpillar Models

One New Aftermarket Replacement Crankshaft Bearing Cap for Caterpillar (Cat) Heavy Equipment

This crankshaft bearing cap (Cat part number 1678081, also formatted as 167-8081) secures the main crankshaft bearings within the engine block, holding the bearings in place and providing wear resistance across the rotating assembly. It is used in Caterpillar's 3406-family engines and a wide range of Cat heavy equipment including articulated trucks, excavators, motor graders, pipelayers, wheel tractor-scrapers, track-type tractors, wheel dozers, soil compactors, cold planers, and more.

Specifications

• Length: 215.9mm
• Weight: Approximately 7 lbs (3 kg)
• Engine Family: Caterpillar 3406 / 3406B / 3406C / 3406E / 3456

Compatible Models

Caterpillar Articulated Trucks: 735, 740, D350E, D350E II, D400E, D400E II

Caterpillar Excavators: 365C, 365C L, 365C L MH, 374D L, 374F L, 375, 375 L, 385B, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L, 390F L, 5080, 5090B

Caterpillar Motor Graders: 16G, 16H NA, 24M

Caterpillar Pipelayers: 578, 583R, 583T, 587R

Caterpillar Wheel Tractor-Scrapers: 621B, 621E, 621F, 621G, 623F, 623G, 627B, 627F, 627G, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 651B, 657E, 657G

Caterpillar Challengers: MT835, MT845

Also fits Cat articulated trucks, cold planers, landfill compactors, soil compactors, wheel dozers, wheel loaders, track-type tractors, reclaimer mixers, and generator sets powered by 3406-series and 3456 engines. Verify your engine serial number before ordering.

Replaces Part Number(s):

1678081, 167-8081, CA1678081

New aftermarket replacement part - not remanufactured, not used.