4B5441 Cap Assembly for Caterpillar Equipment

4B5441 is an engine oil filler cap assembly used on Caterpillar equipment, including earthmoving compactors and engine-machine applications. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified as a cap assembly for the engine oil filler system. Fitment is specified for the Caterpillar machine and engine models listed below. The applicable model designation should be checked against the equipment identification and the part number installed on the machine before replacement.

Fitment

The 4B5441 cap assembly is listed for the following Caterpillar equipment and engine applications:

• Caterpillar 826C earthmoving compactor
• Caterpillar 815B earthmoving compactor
• Caterpillar 3304 engine
• Caterpillar 3306 engine
• Caterpillar 3406 engine
• Caterpillar 3406B engine
• Caterpillar 3406C engine
• Caterpillar 3408 engine
• Caterpillar 3408C engine
• Caterpillar 3408E engine

The listed applications cover both complete Caterpillar machines and engine installations. The 826C and 815B designations are associated with Caterpillar earthmoving compactors, while the 3304, 3306, 3406, 3406B, 3406C, 3408, 3408C, and 3408E designations identify Caterpillar engine applications. Exact installation can depend on the machine configuration and the engine arrangement.

For service identification, compare the number marked on the removed cap assembly with the reference numbers below. Model names and engine series alone should not be used as the only identification method when several configurations are available.

Cross-reference numbers

The following numbers are listed as interchangeable or associated references for the 4B5441 cap assembly:

• 4B5441
• 3497059
• 4B5389
• 7X7700
• 1F6595
• 4A0059

4B5441 is the primary SKU for this product. The other references may appear in equipment parts documentation, service records, or supplier catalogues for the same cap assembly application. Cross-reference information should be matched with the machine model, engine arrangement, and the dimensions of the existing part before installation.

The listed cross-reference numbers identify the part by catalogue or supplier reference; they do not change the stated application of the cap assembly. When ordering or recording the part, retain the complete number, including any letters and numerals, because the references belong to different numbering systems.

Specifications

The stated dimensions are 5 cm in length, 5 cm in width, and 12 cm in depth. These measurements describe the supplied cap assembly as listed in the product data. The supplied item is the cap assembly identified by SKU 4B5441; no additional components or installation hardware are specified in the available product information.

No thread specification, material specification, seal composition, pressure rating, or separate component list is provided for this part. These parameters should therefore be confirmed from the machine documentation or by comparing the removed cap assembly when they are required for service identification.