1P2278 Ring for Caterpillar Equipment

1P2278 is a transmission seal ring used in Caterpillar equipment and engines. The listed applications include industrial engines, marine engines, track-type tractors, trucks, truck engines, and wheel tractors. This is a new aftermarket part manufactured by CTP (Costex Tractor Parts).

The part is identified by SKU 1P2278 and belongs to the Transmission Seal Rings category. The available application data associates this ring with the Caterpillar equipment models listed below. The application type and model designation should be matched with the equipment identification before installation.

Fitment

For industrial engine applications, the listed Caterpillar models are D348, D398, and D399. Marine engine applications include D348, D349, and D398A. The same part number is also listed for the D8K track-type tractor, 777 truck, 1693 truck engine, and 631C wheel tractor.

The fitment information identifies equipment by machine or engine type and model designation. It does not specify a production year, serial-number range, transmission configuration, or installation position. These details are therefore not included as confirmed application data.

Specifications

The specified dimensions are length 8.89 cm, width 15.24 cm, and depth 1.27 cm. The listed weight is 0.1 lb. No material grade, sealing compound, cross-section profile, inner diameter, outer diameter, thickness, thread specification, or installation hardware is provided in the available product data.