8C9129 Buffer Seal for Caterpillar Equipment

The 8C9129 Buffer Seal is a wiper rod seal used in equipment manufactured by Caterpillar. It is listed for Caterpillar engines, machines, and pipelayer equipment, including the 3406, 3406B, 3406C, 3408, 3408C, 3408E, 3412, 3508, 3508B, 578, and related equipment configurations identified by these model designations.

This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The part is identified by SKU 8C9129 and is supplied as a buffer seal for the applicable Caterpillar equipment.

Fitment

• Caterpillar 3406 engine and machine applications
• Caterpillar 3406B engine and machine applications
• Caterpillar 3406C engine and machine applications
• Caterpillar 3408 engine and machine applications
• Caterpillar 3408C engine and machine applications
• Caterpillar 3408E engine and machine applications
• Caterpillar 3412 engine and machine applications
• Caterpillar 3508 engine and machine applications
• Caterpillar 3508B engine and machine applications
• Caterpillar 578 equipment applications
• Caterpillar pipelayer equipment applications

Fitment depends on the specific machine configuration and the installed assembly. The model designations above are taken from the available application data for part 8C9129.

Cross-reference numbers

• 8C9129
• 8C-9129
• 1672216
• 8J4627
• 1306056
• 3119319

The listed numbers are used to identify the same seal or corresponding replacement application in equipment and supplier catalogues. Verify the part number against the seal being removed and the equipment parts documentation before installation.

Specifications

The dimensional data is listed as length, width, and depth for the supplied 8C9129 seal. The available product information does not specify the seal material, internal profile, installation position, rod diameter, groove dimensions, or any additional components included with the part.