Keep clean, filtered air moving to your heavy-duty diesel with the WIX Corrugated Style Engine Air Filter 49666 — a direct-fit replacement for the listed applications, including the 2008-2013 and 2015 Ford F-650 and F-750 [L6-6.7L, L6-7.2L], 2015-2019 Freightliner B2, 2011-2024 Freightliner MT45 and 2012-2022 MT55 [V8-6.0L], 2012-2013 and 2019-2020 IC Corporation RE Commercial and RE School Bus [L6-7.6L, L6-8.9L], plus a wide range of off-highway AGCO, Challenger and Caterpillar equipment. See the Buyer's Guide tab for the full list of 137 applications.
This is a PRIMARY air filter that traps airborne dust and debris before it reaches the engine, helping restore proper airflow for normal engine performance.
- Cellulose filtration media: WIX HD-grade media backed by pleat stabilization beads to help hold the pleats stable in service.
- Oval corrugated element: corrugated-style, oval-shape design with a closed top.
- HD build: polyurethane or high-strength corrosion-resistant end caps and an expanded metal body for a durable, long-lasting filter.
- OE-interval service: recommended for OEM air filter change intervals.
Approximate element size: 13.48 in length x 8.44 in width x 7.35 in height. Made in the United States. Manufacturer part number 49666.
Frequently Asked Questions
What is the WIX 49666?
It is a WIX HD corrugated-style, oval PRIMARY engine air filter that traps dust and debris before it reaches the engine, helping keep airflow clean on the listed heavy-duty and off-highway applications.
What vehicles and equipment does it fit?
It fits applications such as the 2008-2013 and 2015 Ford F-650/F-750, Freightliner B2, MT45 and MT55, IC Corporation buses, and AGCO, Challenger and Caterpillar off-highway equipment. See the Buyer's Guide tab for all 137 listings.
What is the filter media made of?
The 49666 uses cellulose filtration media with pleat stabilization beads, high-strength corrosion-resistant end caps and an expanded metal body for durable service.
When should I replace this air filter?
Signs it may need replacing include a visibly dirty or clogged element and reduced airflow. WIX recommends replacing it at your OEM air filter change interval.
Where is the WIX 49666 made?
Its country of origin is the United States.
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