5M1990 Pilot-Clutch Piston for Caterpillar

The 5M1990 pilot-clutch piston is a component used in the steering clutch system of Caterpillar equipment. The supplied application information identifies it for Caterpillar 3306, 7, D7G, D7G2, D7, D7E, and D7F equipment designations. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified as a pilot-clutch piston and is associated with the steering clutch assembly. In the supplied data, the applicable equipment types are described as Caterpillar engine-machine equipment and Caterpillar track-type tractors. The equipment manufacturer referenced for fitment is Caterpillar; CTP is the manufacturer of this aftermarket replacement part.

Fitment

• Caterpillar 3306
• Caterpillar 7
• Caterpillar D7
• Caterpillar D7E
• Caterpillar D7F
• Caterpillar D7G
• Caterpillar D7G2

The listed applications include the D7-series track-type tractor designations D7, D7E, D7F, D7G, and D7G2. The supplied source also lists the 3306 and 7 designations in connection with this part. Confirm the machine identification and steering clutch configuration against the equipment parts documentation before installation, as the available application data does not provide production years, serial-number ranges, or assembly revisions.

Cross-reference numbers

Part number 5M1990 is the identification number for this pilot-clutch piston. The supplied cross-reference information also lists 2298233 and 5M1988 as interchangeable or associated aftermarket numbers for Caterpillar equipment. The available data does not specify whether each number applies to every model listed above, so number verification should be made using the machine serial number and the steering clutch assembly requirements.

Specifications

The supplied information does not include the piston diameter, overall height, bore dimensions, material specification, weight, seal configuration, or installation hardware. These parameters should be checked against the applicable Caterpillar parts documentation before the part is fitted to the machine.