6R5257 Seal A for Caterpillar — SKU 6R5257

6R5257 Seal A is a mechanical seal for water pumps installed on Caterpillar equipment. It is used with Caterpillar backhoe loaders and wheeled excavators, including the models listed below. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by SKU and part number 6R5257. The product name specifies the component as Seal A, while the product category identifies it as a mechanical seal intended for water pump applications. The available fitment information covers Caterpillar backhoe loader models 416, 416B, 446, 446B, and 446D, as well as Caterpillar wheeled excavator models M312, M313C, M315, M315C, M316C, and M318.

Fitment

• Equipment brand: Caterpillar
• Equipment type: Backhoe loader
• Backhoe loader models: 416, 416B, 446, 446B, 446D
• Equipment type: Wheeled excavator
• Wheeled excavator models: M312, M313C, M315, M315C, M316C, M318

For backhoe loader applications, the listed compatibility includes the Caterpillar 416 and 446 model lines and their specified variants: 416B, 446B, and 446D. For wheeled excavator applications, the listed compatibility includes Caterpillar M312, M313C, M315, M315C, M316C, and M318. The available product data does not specify a separate machine serial-number range or production-year range.

The fitment information associates 6R5257 with the water pump mechanical seal position on the listed Caterpillar machines. The available data does not identify additional machine brands, other equipment series, or further model variants for this part.

Specifications

The dimensions provided for 6R5257 are 17.78 cm in length, 22.86 cm in width, and 2.54 cm in depth. The listed weight is 0.6 lbs. No material specification, thread specification, seal diameter, shaft diameter, installation hardware, or additional kit contents are provided in the available product data.