8N1721 Connecting Rod for Caterpillar Equipment

The 8N1721 connecting rod is an engine component that links the piston to the crankshaft and transfers the force produced during combustion to the crankshaft assembly. It fits Caterpillar equipment, including selected articulated dump trucks, Challenger machines, earthmoving compactors, and Caterpillar engine-machine applications. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by the Caterpillar-style number 8N-1721, which is also written without the hyphen as 8N1721. The supplied application data lists this connecting rod for Caterpillar machines equipped with the applicable engine and connecting-rod configuration.

Fitment

The following Caterpillar models and equipment applications are listed for the 8N1721 connecting rod:

• Caterpillar D250E articulated dump truck
• Caterpillar D250E II articulated dump truck
• Caterpillar D300E articulated dump truck
• Caterpillar D300E II articulated dump truck
• Caterpillar 65C Challenger
• Caterpillar 65D Challenger
• Caterpillar 816F earthmoving compactor
• Caterpillar 815B earthmoving compactor
• Caterpillar 815F earthmoving compactor
• Caterpillar 3304 engine-machine application

Fitment should be confirmed against the machine model, serial number, engine configuration, and the dimensions of the removed component before installation. The listed models represent the available application data for this part and do not replace the equipment manufacturer’s parts identification process.

Cross-reference numbers

The connecting rod is identified by the following number formats:

• 8N1721
• 8N-1721

8N1721 is the SKU and the unhyphenated form of the part number. 8N-1721 is the hyphenated part-number format used for the same component identification.

Specifications

The dimensions provided are listed as reference measurements for the connecting rod: length is given in both inches and centimetres, height is given in inches, and width and depth are given in centimetres. The stated weight is 7.6 lb. No additional information about the material, thread specifications, included hardware, or installation position is provided for this part.