8N5118 Nylon Locknut for Caterpillar

8N5118 is a nylon locknut used on Caterpillar equipment, including Caterpillar engines, generator sets, generators, and industrial engines. The listed equipment applications include the Caterpillar 3408, 3408B, 3408C, 3408E, and SR4 model series.

This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts). The part is identified in the supplied application data as a lock and nylon locknut under part number 8N5118.

Fitment

The 8N5118 nylon locknut is listed for the following Caterpillar equipment and model applications:

• Caterpillar 3408 engine
• Caterpillar 3408B engine
• Caterpillar 3408C engine
• Caterpillar 3408E engine
• Caterpillar SR4 generator
• Caterpillar engine-machine applications
• Caterpillar engine-generator set applications
• Caterpillar generator applications
• Caterpillar industrial engine applications

The model information provided for this part contains repeated entries for Caterpillar 3408, Caterpillar 3408B, Caterpillar 3408C, and SR4. These repeated entries are consolidated above without changing the listed equipment applications.

Cross-reference numbers

The following number is associated with the part in the supplied equipment and aftermarket application data:

• 8N5118 — Caterpillar part number listed for the lock and nylon locknut application
• 8N5118 — CTP aftermarket part number

Specifications

The listed dimensions and weight are reproduced from the available product data. The supplied information does not specify the thread size, nut material beyond the nylon-locknut designation, tightening torque, coating, or packaging contents.