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The K&N roto‑molded cold air intake for 2003–2004 Ford Thunderbird V8‑3.9L increases airflow using a high‑density polyethylene tube and includes a washable, reusable High‑Flow oiled cotton air filter. The oversized conical filter design can allow extended service intervals—up to 100,000 miles under normal highway driving—and a custom heat shield helps protect intake air. The system is backed by K&N’s lifetime limited warranty.
K&N 03-04 Ford Thunderbird V8-3.9L Performance Intake Kit
