CAT 337-6251 Fuel Filter Group

CAT 337-6251 Fuel Filter Group

CAT 337-6251 Fuel Filter Group is identified by Caterpillar part number 337-6251. This component is used to separate water and contaminants from diesel fuel before they reach sensitive fuel-system components. The page below combines official CAT product identification, public technical specifications and major compatible models with practical ordering checks for B2B buyers. Final compatibility should always be confirmed by machine or engine serial number before shipment.

What This Part Does

Effective fuel/water separation helps protect injectors, pumps and other downstream fuel-system components.

Key Features

• Fuel/water separator with spin-on filter element
• Designed to protect heavy-duty fuel systems against water and contaminants
• CAT product page currently does not publish dimensional specifications

Technical Specifications

Major Compatible CAT Models

• Wheeled Excavators: M313D, M315D, M316D, M318D, M318D MH, M322D, M322D MH

These are major applications from Caterpillar public parts information, not a complete serial-number fitment list. Additional CAT arrangements may use the same part number.

Before Ordering

• Confirm CAT part number 337-6251 and whether the complete fuel-filter group is required.
• Check the existing filter-head/housing arrangement, not only the spin-on element.
• Provide the M313D/M315D/M318D/M322D machine model and serial number where applicable.
• Send a photo of the existing filter group if mounting configuration is uncertain.

RUIPO Supply & Fitment Support

RUIPO Spare Parts supplies Caterpillar parts for international B2B customers. Send the part number, required quantity, destination country, engine or machine model and serial number. When possible, include a clear photo of the old part or CAT label. We can help verify the part number, check current stock, confirm packing requirements and prepare an export quotation.