Instruction Sheets for Part Number KNN-85-2003
Air Filter Element, Replacement, Insert, Foam Material, Dry, Black, 4.30 in. Long, 3.00 in. Wide, 8.75 In. Tall, Ford, F250, F450, 6.7L, Diesel, Each
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Estimated Ship Date: Nov 9, 2026 Would you rather pick it up?
Overview
K&N Air Filter Foam Inserts
K&N air filter foam inserts are replacement blocks for your diesel's factory airbox. The OEM foam blocks are glued to the factory filters, making them unusable when wanting to replace your filter with a high-flowing K&N model. These pre-cut air filter foam inserts are ready to install for a perfect factory fit and finish. Plus they are washable and reusable.
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Some parts are not legal for use in California or other states with similar laws / regulations
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