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The K&N roto‑molded cold air intake system for 2003–2004 Chevrolet TrailBlazer and GMC Envoy V8‑5.3L increases airflow with a high‑density polyethylene intake tube paired with a washable, reusable High‑Flow oiled cotton filter to help boost horsepower and torque. The oversized conical filter allows extended service intervals—up to 100,000 miles under normal highway driving—and the system includes a custom heat shield and is protected by K&N's No‑Hassle Lifetime Limited Warranty.
K&N 03-04 Chevrolet Trailblazer V8-5.3L / 03-04 GMC Envoy V8-5.3L Performance Intake Kit
