ATP Parts B-446 Transmission Oil Filter

Transmission Filter Overview

ATP Parts Premium Replacement transmission oil filter B-446 is built to keep transmission fluid clean and help protect internal hydraulic components from wear debris. It is a cartridge-style filter for select Mercedes-Benz applications, including CLA250 and B250 models.

Key Features

• Cartridge-style transmission oil filter for routine fluid service
• Helps trap debris created by normal transmission wear
• Supports cleaner fluid flow through the valve body and related components
• Premium Replacement line from ATP Parts
• Part number B-446 for easy identification

Detailed Description

The ATP Parts B-446 transmission oil filter is intended for drivers servicing a Mercedes-Benz CLA250 or Mercedes-Benz B250 with the specified fitment. Clean transmission fluid is essential for hydraulic control, and a clogged filter can restrict flow and contribute to shifting concerns or internal wear. Replacing the filter during service helps maintain fluid cleanliness and supports the transmission’s long-term operation. This part cross-references Mercedes-Benz numbers 246 377 04 95 and 246 377 23 00 for the same application.

Common Service Issues

• Restricted transmission fluid flow from debris buildup
• Contamination reaching the valve body
• Shifting problems related to dirty fluid
• Increased wear from neglected filter service
• Costly repairs tied to poor transmission maintenance

Installation Notes and Tips

Verify the vehicle application before installation and follow the service procedure specified for the transmission. Replace the filter during fluid service and inspect the pan, seals, and fluid condition as part of the maintenance process. Use the part number B-446 to confirm the correct filter before ordering.

Quality Assurance

ATP Parts positions the Premium Replacement line as a service-focused OE-style offering for maintenance applications. The B-446 is identified for select Mercedes-Benz fitments and is supported by the manufacturer’s guidance on transmission fluid cleanliness and filter replacement.