1B4206 Nut Fits Caterpillar Models

One New Aftermarket Replacement Nut for Caterpillar (Cat) Equipment

This aftermarket replacement nut (OEM part number 1B4206) is a high-volume hardware fastener used across a wide range of Caterpillar (Cat) construction, industrial, and earthmoving equipment. Identified in OEM service documentation as an air chamber mounting nut with a 5/8-18 thread specification, it appears across numerous assemblies including ROPS, brake groups, torque converters, pump groups, mounting groups, and lighting groups on Cat machines spanning decades of production.

Specifications

• Thread: 5/8-18
• Weight: approx. 0.03 lbs

Compatible Models

Caterpillar Motor Graders: 12E, 12G, 14E, 14G, 16, 16G, 120, 120B, 120G, 130G, 140, 140B, 163

Caterpillar Track-Type Tractors (Dozers): D3B, D4D, D4E, D4E SR, D5, D5B, D5E, D6C, D6D, D6E, D6E SR, D6F SR, D6G SR, D7F, D7G, D7G2, D7H, D8H, D8K, D8L, D8N, D9E, D9G, D9H, D9L, D10

Caterpillar Wheel Loaders: 920, 926, 930, 930R, 936, 950, 950B, 966C, 966D, 966R, 980, 980B, 980C, 988, 988B, 992, 992C, 992D, G936

Caterpillar Wheel Tractor-Scrapers: 613C, 651E, 657E

Caterpillar Track-Type Skidders / Grapple Skidders: 125C, 518

Caterpillar Track-Type Loaders: 973C

Caterpillar Pipelayers: 561B, 561C, 561D, 589

Caterpillar Asphalt Pavers: AP-1000, AP-1050

Caterpillar Earthmoving Compactors: 815B, 826C

Caterpillar Engines (Industrial / Marine): 3054, 3054B, 3116, 3126, 3208, 3304, 3304B, 3306, 3406

Caterpillar Additional Models: 24, 25, 41, 44, 46, 50, 127, 129, 172, 173B, 183B, 206, 212, 215, 1676, 3S, 4S, 428

Replaces Part Number(s):

1B4206, 1B-4206

Aftermarket Interchange Numbers

5D3183, 8T4395, 6B6683, 1K9099, 01050620

New aftermarket replacement part - not remanufactured, not used.