9W3120 Pin A for Caterpillar Equipment

9W3120 is a flag-type steel pin used on Caterpillar tracked bulldozers and the Caterpillar 931 track loader. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The part is supplied as a pin and has no puller hole for removal.

The part number is written in two commonly used formats: 9W3120 and 9W-3120. The equipment brand specified for this part is Caterpillar; Caterpillar refers to the manufacturer of the compatible machines.

Fitment

The 9W3120 Pin A is used on the following Caterpillar equipment models and series:

• Tracked bulldozers: 3P, 3S, 53, D3, D3B, D3C, D3C II, D4B and D4C.
• Track loader: 931.

Fitment is listed by machine model and series. The part is identified as Pin A for the specified equipment applications. The available model information does not specify a particular installation side, axle, linkage, bucket position or quantity required per machine.

Cross-reference numbers

• 9W-3120 — hyphenated part-number format.
• 9W3120 — non-hyphenated part-number format and SKU.

Both number formats identify the same 9W3120 Pin A application in the supplied parts information. No additional supplier or equipment-manufacturer reference numbers are specified.

Specifications

The listed dimensions include the finger diameter and overall length in inches, as well as the supplied package or part dimensions in centimetres. The available data does not identify a cotter pin, retaining ring, bush, washer or other installation hardware as included with the 9W3120 pin.