4P3778 Clamp Fit Caterpillar

4P3778 is a tension-type clamp for the air-intake and exhaust stack systems of Caterpillar equipment. It is used with Caterpillar engine-machine applications and Caterpillar motor graders, including the equipment models listed below. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The clamp is designed to secure a pipe with a specified diameter of 4.25 inches. Its construction is identified as steel, and the specified fastening size is 3/8-16. The product data identifies the component as a clamp supplied under the 4P3778 part number and the formatted number 4P-3778.

Fitment

The part is listed for Caterpillar equipment in two application groups: engine-machine equipment and motor graders. The compatible Caterpillar models identified for this part are:

• Caterpillar 3304 engine-machine equipment
• Caterpillar 3306 engine-machine equipment
• Caterpillar C7 engine-machine equipment
• Caterpillar 120G motor grader
• Caterpillar 12G motor grader
• Caterpillar 12H motor grader
• Caterpillar 12H ES motor grader
• Caterpillar 12H NA motor grader
• Caterpillar 130G motor grader
• Caterpillar 140G motor grader

Fitment is stated for the listed Caterpillar engine-machine and motor grader models. The clamp should be matched to the equipment configuration and the pipe dimensions before installation, since the application data identifies a 4.25-inch pipe diameter and a 3/8-16 compatible bolt size.

Cross-reference numbers

The part is identified by the following number formats:

• 4P3778
• 4P-3778

4P3778 is the SKU for this clamp. The 4P-3778 format is shown as the corresponding hyphenated part-number format in the product identification data.

Specifications