4S8531 Shaft Assembly for Caterpillar

The 4S8531 Shaft Assembly is a pivot shaft component used in Caterpillar heavy equipment. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by SKU 4S8531 and is listed as a Pivot Shaft. The Caterpillar equipment applications include track-type tractors, wheel bulldozers, wheel-type loaders, pipe-layers, track loaders, and ground compactors for earthwork.

Fitment

• Track-type tractors: 153, 163, 5, 55, 5A, 5S, 6, D5, D5B.
• Wheel bulldozer: 814.
• Wheel-type loaders: 950, 966C.
• Pipe-layer: 561D.
• Track loaders: 955K, 955L, 977.
• Ground compactors for earthwork: 815, 816.

Compatibility is specified for the Caterpillar machine models listed above. The model designations are retained as provided for identifying the applicable equipment series and machine configuration.

The part is used across several Caterpillar equipment categories. The fitment group includes both tracked and wheeled machines, as well as equipment intended for pipe-laying and earthwork compaction.

Cross-reference numbers

Number 4S8531 is the primary identification number for this shaft assembly. The number 4S8530 is listed as an interchange reference for the same application group. The hyphenated form 4S-8531 refers to the same Caterpillar part number format.

When checking a replacement shaft assembly, compare the machine model and the applicable part number with the equipment parts information. The cross-reference data above is limited to the numbers provided for this product.

Specifications

The stated dimensions are length 5.8 cm, width 4.9 cm, and depth 6.1 cm. The listed weight is 0.4 lb. No additional information about material, thread specifications, mounting hardware, seals, or included components is provided for this shaft assembly.