3P0391 Valve for Caterpillar Equipment

3P0391 is an engine valve used in Caterpillar equipment, including track-type tractors, pipe-layers, and track loaders. The part belongs to the Engine Intake & Exhaust Valves category and is identified by the SKU 3P0391.

This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The valve is listed for the Caterpillar equipment models and machine series specified below. The applicable machine type is included with each model group to distinguish the intended equipment application.

Fitment

• Track-type tractors: 153, 163, 4, 55, 6A, 6S, D6C, D6D, D6E, D6G, D6G2 LGP, D6G2 XL, D7F, D7G, D7G2.
• Pipe-layers: 571G, 572G.
• Track loaders: 951, 955, 977K, 977L.

Fitment is stated by Caterpillar model designation. Before installation, the machine model and the number marked on the removed valve should be checked against the information below, particularly where several versions of the same equipment series are in service.

The listed applications cover three Caterpillar equipment groups: track-type tractors, pipe-layers, and track loaders. No additional machine models or equipment brands are specified for this part.

Cross-reference numbers

• 3P0391 — product SKU and part number designation.
• 3P-0391 — hyphenated part number format used for the same valve.

The two number formats identify the same part reference: 3P0391 and 3P-0391. The hyphen is a formatting difference in the written part number and does not indicate a separate model or specification.

Specifications

The dimensions supplied for the part are 10 cm in length, 8 cm in width, and 2 cm in depth. The stated weight is 0.2 lb. The available product information does not specify the valve material, stem diameter, head diameter, overall valve height, seat angle, thread details, or whether additional installation components are included.