Wix 46977 Engine Crankcase Breather Element

Wix 46977 Engine Crankcase Breather Element

The Wix 46977 engine crankcase breather element is a synthetic-media breather filter built for light-duty emission control service. It is sized for direct replacement use on select Ford trucks and vans, including Bronco, E-150 Econoline, E-250 Econoline, E-350 Econoline, F-150, F-250, and F-350 applications from 1994-1996.

Key Features

• Breather filter style for crankcase ventilation service
• Synthetic media for consistent filtration performance
• Closed top design
• Dimensions: 2.769 in. height, 4.39 in. length, 1.26 in. width
• Light-duty class C construction
• Direct replacement part number: Wix 46977

Detailed Description

Wix 46977 is an engine crankcase breather element used in emission control systems to help manage airflow through the crankcase while filtering incoming contaminants. The synthetic filter media is selected for filtration-focused maintenance service, and the compact breather-filter form factor supports OE-style replacement on the listed Ford applications. This part cross-references Ford F4TE9D695AA and Motorcraft FA1603 for the same application. It is a practical replacement choice for 1994-1996 Ford Bronco, 1994-1996 Ford E-150 Econoline, and 1994-1996 Ford F-150 service needs where the original breather element has reached the end of its service life.

What It Helps Address

• Restricted crankcase ventilation from a loaded breather element
• Contaminant buildup in the breather path
• Service issues related to worn or clogged emission control filtration
• Replacement needs on aging Ford Bronco, Econoline, and F-Series applications
• Maintenance intervals where the original breather filter no longer performs as intended

Installation Notes and Tips

Verify the existing breather filter dimensions and style before installation. Confirm the vehicle application against the listed fitment for 1994-1996 Ford Bronco, E-150 Econoline, E-150 Econoline Club Wagon, E-250 Econoline, E-350 Econoline, E-350 Econoline Club Wagon, F-150, F-250, and F-350. The closed-top, synthetic-media design should be matched to the original configuration for proper fit and function. For best results, inspect the surrounding crankcase ventilation components during service and replace any damaged seals or housings as needed.

Quality Assurance

Wix filtration products are built around maintenance-focused filtration standards, with supplemental items and filter components developed to support service life and installation accuracy. The 46977 breather element follows that filtration-first approach for emission control applications.