8R3943 Collet for Caterpillar Equipment

The 8R3943 collet is a hardware component used with Caterpillar equipment, including Caterpillar engines, track-type loaders, and wheel-type loaders. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by SKU 8R3943 and is designed with a threaded center hole. The listed application data covers Caterpillar engine models 3306, 3406, 3406B, and 3406C, as well as Caterpillar 973, 973C, 980C, and 980F loader models.

Fitment

• Caterpillar 3306 engine
• Caterpillar 3406 engine
• Caterpillar 3406B engine
• Caterpillar 3406C engine
• Caterpillar 973 track-type loader
• Caterpillar 973C track-type loader
• Caterpillar 980C wheel-type loader
• Caterpillar 980F wheel-type loader

The supplied fitment information identifies the part for Caterpillar engine applications, Caterpillar track-type loader applications, and Caterpillar wheel-type loader applications. Compatibility should be checked against the equipment model and the dimensions of the removed part before installation.

Cross-reference numbers

• 8R3943
• 8R-3943

8R3943 is the SKU format used for this part. 8R-3943 is the hyphenated part-number format shown for the same collet.

Specifications

The collet has an outer diameter of 4.17 inches and a base diameter of 3.54 inches. Its overall listed length is 3.7 inches, with a threaded center hole using a 1 1/4-12 inch thread specification. The dimensional data also lists a length of 12.1 cm, a width of 12.1 cm, and a depth of 13.3 cm.

Listed equipment applications include the Caterpillar 3306, 3406, 3406B, and 3406C engines. Loader applications include the Caterpillar 973 and 973C track-type loaders and the Caterpillar 980C and 980F wheel-type loaders. The part weight is listed as 5.7 pounds.