Opparts XA11979 Engine Air Filter - Main or Secondary

Engine Air Filter for Ford Super Duty

The Opparts ECOGARD XA11979 engine air filter is built for direct-fit service on select Ford Super Duty trucks. It is an engine air filter with a special shape and compact dimensions that match the listed applications for dependable airflow management.

Compatible With 2020-2026 Ford F-250 Super Duty and Ford F-350 Super Duty applications, this filter is listed for both main and secondary positions depending on model year and engine air intake setup. The ECOGARD product line focuses on installation-tested fit, form, and function for straightforward replacement service.

Key Features

• Part number XA11979 for easy identification
• Engine air filter for air and fuel delivery service
• Special-shaped filter element
• Height: 1.81 in.
• Side A Length: 10.79 in.
• Side B Length: 3.35 in.
• Non-reusable design
• Listed for main and secondary filter positions

Detailed Description

Opparts ECOGARD XA11979 is an engine air filter engineered for select Ford Super Duty trucks, including the Ford F-250 Super Duty and Ford F-350 Super Duty. The ECOGARD line is installation tested to verify correct fit, form, and function, helping ensure the filter seats properly in the airbox and supports consistent engine intake service. The special shape and measured dimensions are important for applications that require a precise replacement filter rather than a universal part.

For buyers searching for a Ford F-250 Super Duty engine air filter or a Ford F-350 Super Duty air filter by part number, XA11979 provides a direct reference for the listed 2020-2026 applications. This part number is also useful when matching the correct main or secondary filter position on the specified trucks.

What It Helps Address

• Restricted airflow from a dirty or clogged engine air filter
• Incorrect filter fitment in the airbox
• Service replacement for the listed Ford Super Duty intake setup
• Loss of filtration performance from a worn filter element
• Confusion when ordering by part number XA11979

Installation Notes and Tips

Verify the vehicle year, model, and filter position before ordering. Fits 2020-2022 Ford F-250 Super Duty, Main. Fits 2020-2022 Ford F-350 Super Duty, Main. Fits 2023-2026 Ford F-250 Super Duty, Secondary, Foam. Fits 2023-2026 Ford F-350 Super Duty, Secondary, Foam. Confirm whether your truck uses the main or secondary air filter location, since the listed fitment changes by year and position.

Part number XA11979 should be matched against the existing filter and airbox configuration before installation. This part cross-references no listed interchange numbers for the same application.

Quality Assurance

ECOGARD air filters are installation tested for correct fit, form, and function. That product-line focus supports accurate replacement selection for Ford F-250 Super Duty and Ford F-350 Super Duty service work.