3S2666 Lock-Nut for Caterpillar Equipment

The 3S2666 lock-nut is a hardware component used in Caterpillar equipment, including Caterpillar engines and wheel tractor-scrapers. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by the Caterpillar equipment part number 3S2666 and is also written as 3S-2666 in the part designation. The available application data covers Caterpillar engine models and Caterpillar wheel tractor-scraper models listed below.

Fitment

• Caterpillar 3306 engine
• Caterpillar 3406 engine
• Caterpillar 3406B engine
• Caterpillar 3406C engine
• Caterpillar 3408 engine
• Caterpillar 3408C engine
• Caterpillar 3408E engine
• Caterpillar 621F wheel tractor-scraper
• Caterpillar 627E wheel tractor-scraper
• Caterpillar 657E wheel tractor-scraper

Fitment is specified for the Caterpillar engine-machine group and for Caterpillar wheel tractor-scraper applications. The model list includes both engine designations and complete machine model designations because the same lock-nut part number is listed for these equipment applications.

Cross-reference numbers

• Caterpillar equipment part number: 3S2666
• Caterpillar equipment part designation: 3S-2666
• CTP aftermarket part number: 3S2666

3S2666 is the SKU of this part. The 3S-2666 format represents the same part designation with a separator in the number. No additional supplier part numbers are provided in the available product data.

Specifications

The listed dimensions are length, width, and depth values supplied for the 3S2666 lock-nut. The available product data does not specify thread size, material, tightening torque, installation position, or additional components included with the part.