Bosch 5451WS Engine Air Filter

Bosch Workshop Air Filter 5451WS

Bosch 5451WS is an engine air filter built for older Ford, Lincoln, and Mercury applications that need clean intake airflow and dependable filtration. It uses a high-pleat cellulose media and a radial shape to help keep outside particles out of the engine while maintaining proper air delivery.

The Bosch Workshop Air Filter line focuses on consistent sealing and filtration performance for service replacement needs. For vehicles such as the Ford F-150, Ford Bronco, and Mercury Marquis, this filter supports routine maintenance on classic carbureted and early fuel-injected engines.

Key Features

• Radial engine air filter design
• High-pleat cellulose cured media for particle capture
• 98% filtration efficiency per manufacturer data
• Polyurethane seal helps maintain surface integrity
• Seal material adds elasticity and resistance to water and heat
• Built for workshop replacement use on select Ford, Lincoln, and Mercury models

Detailed Description

Bosch part number 5451WS is an engine air filter engineered to help protect the intake system from dust and debris. The pleated media increases available filtering surface, while the polyurethane sealing edge helps maintain a consistent fit in the air cleaner housing. This combination supports clean airflow for strong engine protection and stable performance in service applications. It is a direct-fit style replacement for many classic Ford, Lincoln, and Mercury vehicles, including the Ford LTD Crown Victoria, Ford E-150 Econoline, and Mercury Grand Marquis.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Restricted airflow caused by a dirty or clogged engine air filter
• Dust and road debris entering the intake system
• Loss of filtration surface from worn sealing material
• Maintenance needs on older Ford, Lincoln, and Mercury air cleaner systems
• Service replacement for vehicles with radial air filter housings

Installation Notes and Fitment

Compatible With select 1972-1991 Ford, Lincoln, and Mercury vehicles. Fits 1987-1991 Ford LTD Crown Victoria, N/A; Fits 1976-1989 Mercury Grand Marquis, N/A; Fits 1972-1986 Ford LTD, N/A; Fits 1978-1985 Ford Bronco, N/A; Fits 1975-1985 Ford E-150 Econoline, N/A; Fits 1975-1985 Ford E-150 Econoline Club Wagon, N/A; Fits 1975-1985 Ford E-250 Econoline, N/A; Fits 1975-1985 Ford E-250 Econoline Club Wagon, N/A; Fits 1975-1985 Ford E-350 Econoline, N/A; Fits 1977-1985 Ford E-350 Econoline Club Wagon, N/A; Fits 1975-1985 Ford F-150, N/A; Fits 1977-1985 Ford F-250, N/A; Fits 1974 Ford F-250, N/A; Fits 1974-1985 Ford F-350, N/A; Fits 1985 Ford Thunderbird, N/A; Fits 1983-1985 Lincoln Continental, N/A; Fits 1977-1980 Lincoln Continental, N/A; Fits 1984-1985 Lincoln Mark VII, N/A; Fits 1981-1985 Lincoln Town Car, N/A; Fits 1983-1985 Mercury Cougar, N/A; Fits 1974-1979 Mercury Cougar, N/A; Fits 1972 Mercury Cougar, N/A; Fits 1973-1983 Ford E-100 Econoline, N/A; Fits 1975-1983 Ford E-100 Econoline Club Wagon, N/A; Fits 1975-1983 Ford F-100, N/A; Fits 1980-1983 Lincoln Mark VI, N/A; Fits 1982 Ford Mustang, N/A; Fits 1972 Ford Mustang, N/A; Fits 1982 Mercury Capri, N/A; Fits 1976-1982 Mercury Marquis, N/A; Fits 1973 Mercury Marquis, N/A; Fits 1977-1980 Lincoln Versailles, N/A; Fits 1975-1980 Mercury Monarch, N/A; Fits 1972-1976 Mercury Montego, N/A; Fits 1972-1973 Ford F-250, N/A, with 10 in Air Filter Housing; Fits 1972-1973 Ford F-350, N/A, with 10 in Air Filter Housing; Fits 1972-1973 Mercury Colony Park, N/A; Fits 1972 Ford Mustang, N/A, for models without ram air.

Quality Assurance

Bosch Workshop Air Filter components are built around high-pleat media and a sealing design intended to maintain filtration efficiency and housing contact during service use. Bosch 5451WS is specified for direct replacement applications across multiple Ford, Lincoln, and Mercury platforms.