7L4434 Tapered Roller Bearing

7L4434 is a tapered roller bearing, also identified as a cup-roller bearing, for Caterpillar equipment. It is used in Caterpillar engine and machine equipment, including the 3408, 3408C, 3408E, 3412, 3412E, 3508, 3508B, 3512, 3512B, and 3512C engine models. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The bearing is supplied under SKU 7L4434. The available application data identifies Caterpillar as the equipment manufacturer and lists the engine models below as compatible applications. Model designation should be checked against the machine or engine identification data before installation.

Fitment

• Caterpillar 3408
• Caterpillar 3408C
• Caterpillar 3408E
• Caterpillar 3412
• Caterpillar 3412E
• Caterpillar 3508
• Caterpillar 3508B
• Caterpillar 3512
• Caterpillar 3512B
• Caterpillar 3512C

The listed fitment covers the Caterpillar engine series specified in the product data. The application list includes standard and letter-suffix versions of the 3408, 3412, 3508, and 3512 engine families. No additional machine model, installation position, bearing arrangement, or associated component information is specified in the available data.

Cross-reference numbers

• 7L4434
• 7L-4434
• 28521

7L4434 and 7L-4434 are two written formats of the same listed part number. Number 28521 is identified as an interchange or cross-reference number for this bearing. These numbers are provided for part identification and catalog matching; they do not describe additional fitment beyond the applications listed above.

Specifications

The dimensions above are the overall length, width, and depth stated in the product data. Bore diameter, outside diameter, bearing height, cone and cup separation, material specification, clearance class, sealing arrangement, and lubrication requirements are not provided. The available data also does not specify whether additional bearing components, seals, or mounting hardware are included; the product is described as the bearing itself.