Intake Manifold Switching Flap Sensor SIERRA 118-4458

Compatible Engines

The original SIERRA 118-4458 intake manifold switching flap is a critical component of the air intake system, responsible for optimizing airflow and enhancing outboard motor performance. Its precise engineering ensures rapid, reliable response to RPM changes, resulting in smoother operation and improved handling. Important: This part is not universal. Due to the absence of a specific compatibility list in the source data, we recommend verifying fitment by comparing the manufacturer's catalog number (118-4458) or the original OE number with your engine's technical documentation. If you have any doubts regarding compatibility, please contact our customer support to select the correct part.

Installation and Maintenance

• Quality Guarantee – The original SIERRA product ensures long service life.
• Performance Optimization – Improves throttle response and RPM stability.
• Easy Replacement – Simple design facilitates the removal of the old part.
• Fitment Check – Verify the OE number before purchasing.

During installation, pay close attention to connection seals. Improper installation can lead to vacuum leaks and power loss. Regular inspection of the flap condition extends engine life.