6T8521 Split Master Link Bolts for Caterpillar Equipment

6T8521 is a split master link bolt used with Caterpillar equipment, including Caterpillar engines and track-type tractors. The part is listed for Caterpillar models and machine series 3508, 3508B, C32, 11SU, 11U, 11, D11N, D11R, and D11T. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified as a bolt-link component for the connection of a split master link. Its application is associated with the undercarriage or track assembly of Caterpillar track-type tractor equipment and with the listed Caterpillar engine-machine applications. The available product data does not specify the required installation torque, thread size, bolt grade, material, or the number of bolts supplied.

Fitment

• Caterpillar 3508
• Caterpillar 3508B
• Caterpillar C32
• Caterpillar 11SU
• Caterpillar 11U
• Caterpillar 11
• Caterpillar D11N
• Caterpillar D11R
• Caterpillar D11T

The listed applications include Caterpillar engine-machine equipment and Caterpillar track-type tractors. Model compatibility should be checked against the equipment serial number and the existing part identification before installation where a serial-number-specific parts configuration applies.

Cross-reference numbers

• 6T8521 — product SKU and unhyphenated part number format
• 6T-8521 — hyphenated part number format

6T8521 and 6T-8521 identify the same part number in different written formats. The available data does not provide additional supplier numbers or a separate replacement number.

Specifications