3K2556 Internal Snap Ring for Caterpillar Equipment

The 3K2556 internal snap ring is a spiral retaining ring used in equipment manufactured by Caterpillar. It fits Caterpillar earthmoving compactors and Caterpillar engine-machine applications. This is a new aftermarket internal snap ring manufactured by CTP (Costex Tractor Parts).

The part is identified by SKU 3K2556 and is intended for internal retaining-ring applications. The supplied fitment data lists Caterpillar 826C, 836, 836G and 836H earthmoving compactors, together with Caterpillar 3306, 3406, 3406B, 3406C, 3406E and 3408 engine-machine applications.

Fitment

• Equipment manufacturer: Caterpillar
• Equipment type: Earthmoving compactor
• Equipment type: Engine-machine
• Model: Caterpillar 826C
• Model: Caterpillar 836
• Model: Caterpillar 836G
• Model: Caterpillar 836H
• Model: Caterpillar 3306
• Model: Caterpillar 3406
• Model: Caterpillar 3406B
• Model: Caterpillar 3406C
• Model: Caterpillar 3406E
• Model: Caterpillar 3408

Compatibility is listed by equipment family and model designation. The part should be matched with the machine model and the dimensions of the existing retaining-ring location before installation.

Cross-reference numbers

• 3K2556
• 3K-2556

3K2556 and 3K-2556 are the number formats provided for this internal snap ring. The first format corresponds to the product SKU, while the second format uses a hyphen between the prefix and the numeric designation.

Specifications

The dimensions supplied for the part are the hole diameter, free diameter and ring thickness. The hole diameter is specified as 4.50 inches, the free diameter as 4.77 inches and thickness B as 0.111 inches. Packaging dimensions are listed as 15.24 cm in length, 12.7 cm in width and 2.54 cm in depth.