1781688 Shim for Caterpillar Equipment

Shim 1781688 is a spacing and adjustment component used in Caterpillar engines and motor graders. It is listed for Caterpillar equipment models including 3116, 3126, 3126B, 3176C, 3306, C-9, C7, 120H, 120H ES, and 120H NA. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified as a shim for Caterpillar engine applications and Caterpillar motor grader applications. The available fitment information does not specify the exact installation location or assembly position, so these details should be verified against the equipment parts catalogue and the serial number of the machine or engine.

Fitment

• Equipment brand: Caterpillar
• Equipment type: Engine and machine applications
• Equipment type: Motor grader
• Engine model: Caterpillar 3116
• Engine model: Caterpillar 3126
• Engine model: Caterpillar 3126B
• Engine model: Caterpillar 3176C
• Engine model: Caterpillar 3306
• Engine model: Caterpillar C-9
• Engine model: Caterpillar C7
• Machine model: Caterpillar 120H
• Machine model: Caterpillar 120H ES
• Machine model: Caterpillar 120H NA

Cross-reference numbers

The part is supplied under the same number used for identification in the available equipment parts data. The following reference is associated with this shim:

• Equipment manufacturer reference number: 1781688
• CTP part number: 1781688

The reference number is also written in the short form 178-1688. These number formats identify the same part number shown in the product data.

Specifications

The listed dimensions and weight are the product data available for SKU 1781688. The source information does not specify the material, thickness, hole pattern, thread, coating, or exact assembly location. Fitment should therefore be confirmed by comparing the equipment model, serial number, and the reference number 1781688 before installation.