K&N Series 77 High Flow Performance Cold Air Intake (97-03 4.6L F-150)

The K&N Series 77 High Flow Performance Cold Air Intake for the 1997-2003 Ford F-150 with a 4.6L V8 engine is a premium aftermarket intake system designed to boost engine power, fuel efficiency, and throttle response with no additional tuning required. It features a large 9-inch high conical air filter made from oiled cotton gauze layered with two aluminum epoxy-coated screens for durability and long service life. The filter is washable and reusable, typically needing cleaning only after 100,000 miles under normal conditions.

The intake tube is made of aerodynamically polished aluminum with mandrel bends to increase airflow and reduce turbulence. The system includes a heat shield with EPDM foam sealing strips to block engine heat and supply cooler air for improved combustion. It accepts the factory MAF sensor and includes fittings for EVAP and crankcase vent hoses to maintain proper engine function.

Installation is simple and requires only basic hand tools, with no drilling or custom modifications necessary. The system is made in the USA and backed by a 1 million mile warranty. It is CARB-certified, making it legal for street use in all 50 states. Performance gains include an increase of up to 9.7 horsepower and 11.44 ft-lbs of torque.

This cold air intake is an efficient, durable, and legal upgrade for the 1997-2003 Ford F-150 4.6L V8, enhancing overall engine performance and longevity.​