Is your Duramax struggling with rough idle, poor throttle response, or check engine codes tied to intake pressure readings? The Walker MAP Sensor restores accurate manifold pressure feedback to your engine computer, enabling it to correctly calculate air‑to‑fuel ratios and manage boost, fueling, and timing. A failing MAP sensor can lead to hesitation, reduced fuel economy, and unpredictable performance. Still, this direct‑fit replacement brings dependable pressure data back online, helping your truck run smoothly whether you’re on the highway or towing heavy loads.

Built to meet or exceed OEM standards, this sensor features precision internal electronics and a rugged housing designed to withstand heat, vibration, and contaminants in the intake system. With an OE‑style connector and straightforward plug‑and‑play installation, it delivers consistent, accurate readings that help your ECM optimize fueling and emissions strategy. Engineered and tested for long service life, it provides dependable performance mile after mile and helps eliminate intake pressure–related fault codes for reliable operation.