9L1657 Studs - Taper Lock fit Caterpillar

9L1657 is a taper-lock threaded stud, also identified as part number 9L-1657, for Caterpillar equipment. It is used as a clamp cone stud in specified Caterpillar engines, generator sets, generators, industrial engines, and motor graders. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The stud has a threaded design for installation in a compatible threaded hole and is intended for applications where a taper-lock connection is specified. The available equipment data identifies both the applicable Caterpillar equipment categories and individual machine or engine models listed below.

Fitment

• Caterpillar engine-machine applications
• Caterpillar engine-generator set applications
• Caterpillar generators
• Caterpillar industrial engines
• Caterpillar motor graders

Listed Caterpillar equipment models:

• Caterpillar 3304
• Caterpillar 3304B
• Caterpillar SR4
• Caterpillar 120G

Cross-reference numbers

• 9L1657
• 9L-1657

Numbers 9L1657 and 9L-1657 designate the same part-number format, with or without the separator.

Specifications

The part is listed as a fully threaded or threaded-at-both-ends stud with straight, tapered, and locking thread sections. The supplied specification data identifies the 3/8-16 thread size for 9L1657; other thread sizes mentioned in the general locking-function description are not assigned to this part.