Replacement REPM545401 Intake Manifold Runner Valve

The Replacement REPM545401 is a direct-fit Intake Manifold Runner Valve designed to restore proper intake airflow control on compatible Mazda vehicles. The intake manifold runner valve — also known as an intake manifold runner control (IMRC) valve — regulates airflow through the intake manifold runners to optimize engine torque, throttle response, and fuel efficiency across the RPM range. A faulty runner valve commonly triggers a P2004, P2006, or P2008 diagnostic trouble code and can result in rough idle, reduced power, and poor fuel economy.

This replacement unit is engineered to match OEM fit, form, and function, allowing for a straightforward, no-modification installation. It is a reliable aftermarket alternative to original equipment part numbers 2M1414, IRS106, LF15-18-741, and RCS106.

Key Features:

• Direct OEM replacement — no modifications required
• Restores proper intake air distribution and throttle response
• Helps resolve P2004, P2006, and P2008 fault codes
• Manufactured to OEM specifications for reliable, long-lasting performance
• Replaces OEM part numbers: 2M1414, IRS106, LF15-18-741, RCS106

This intake manifold runner valve is a cost-effective solution for restoring factory engine performance and emissions compliance on the covered Mazda platforms.