1669145 Gasket Fits Caterpillar Models

One New Aftermarket Replacement Cylinder Block Gasket for Caterpillar (Cat) 3408 and 3412 Series Engines

This aftermarket replacement cylinder block gasket (Cat part number 1669145 / 166-9145) seals the cylinder block on Caterpillar 3408 and 3412 series diesel engines. It is used across a wide range of Cat construction, mining, marine, and industrial equipment powered by these engine families.

Compatible Models

Caterpillar Engine Series: 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412D, 3412E

Caterpillar Gas and Marine Engines: G3408, G3408B, G3408C, G3412, G3412C, C30, C32

Caterpillar Gen Set / Industrial: 3408, 3408C, 3412, 3412C, G3412C, PM3412

Caterpillar Track-Type Tractors: D8L, D9L, D9N, D9R, D10N, D10R

Caterpillar Wheel Dozers: 834B, 844

Caterpillar Wheel Loaders: 988B, 988F, 988F II, 990, 990 II, 992C, 992D

Caterpillar Off-Highway Trucks: 69D, 769C, 769D, 771C, 771D, 773B, 773D, 773E, 775B, 775D, 775E

Caterpillar Wheel Scrapers / Tractors: 631D, 631E, 631G, 633E II, 637E, 637G, 651E, 657E

Caterpillar Motor Graders: 24H

Caterpillar Pipelayers: 589

Caterpillar Cold Planers: PM-565, PM-565B, PR-450C, PR-1000

Caterpillar Mining Excavators: 5110B

Caterpillar Landfill Compactors: 836

Replaces Part Number(s):

1669145, 166-9145, 1234207, 123-4207, 4N1625, 4W5599, FP-1669145, FP1669145, M-1669145, M1669145, P001232

New aftermarket replacement part - not remanufactured, not used.