3E4051 Engine Oil Filler Cap for Caterpillar Equipment

3E4051 is an engine oil filler cap used on Caterpillar articulated dump trucks. The part is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The catalog description also identifies this component as a cap-seal assembly under the Caterpillar part designation 3E-4051. The supplied application data covers several Caterpillar articulated dump truck models and model series listed below.

Fitment

• Caterpillar 725 articulated dump truck
• Caterpillar 730 articulated dump truck
• Caterpillar 735 articulated dump truck
• Caterpillar 740 articulated dump truck
• Caterpillar D250E articulated dump truck
• Caterpillar D250E II articulated dump truck
• Caterpillar D300E articulated dump truck
• Caterpillar D300E II articulated dump truck
• Caterpillar D350E articulated dump truck
• Caterpillar D350E II articulated dump truck

Fitment is specified by the model designation. The available product data does not include machine serial-number ranges, production years, or engine-specific application details. For equipment with multiple configurations, the part number should be checked against the identification plate or the installed component before replacement.

Cross-reference numbers

3E4051 is the product SKU and is also listed as the corresponding Caterpillar equipment part number in the supplied application data. The number 3E-4051 is the same designation written with a separator.

Specifications

The listed dimensions are length 1.2 cm, width 1.2 cm, and depth 2 cm. The stated weight is 0.1 lb. No information is provided for thread specification, sealing material, color, mounting method, or additional components supplied with the part; these parameters are therefore not specified here.