1L6957 Locknut for Caterpillar Equipment

1L6957 is a nylon locknut used on Caterpillar equipment, including track-type tractors, pipelayers, track skidders, vibratory compactors, industrial engines, cold planers and Challenger machines. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

The 1L6957 locknut is listed for the following Caterpillar equipment models and series:

• Challenger: 65C
• Cold planer: PR-1000
• Industrial engine: D343
• Pipelayer: 561M, 561N, 572R, 572R II, 578, 583R, 583T, 587R, 587T, PL83, PL87
• Track skidder: 517, 527, D4HTSK II, D4HTSK III, D5HTSK II
• Track-type tractor: 30/30, D4H, D4H XL, D5H, D5H XL, D5M, D5N, D5R LGP, D6H, D6H II, D6H XL, D6H XR, D6M, D6N, D6N LGP, D6N OEM, D6R, D6R II, D6R III, D6R STD, D6T, D6T LGP, D6T LGPPAT, D6T XL, D7H, D7R, D7R II, D7R XR, D8N, D8R, D8R II, D8T, DEUCE
• Vibratory compactor: CS-573C, CS-583, CS-583C

Specifications