Genuine KL19-18-74X EGR Vacuum Solenoid Valve for Mazda

The Genuine KL19-18-74X is an OEM exhaust gas recirculation (EGR) vacuum solenoid valve designed for select Mazda vehicles. This electronic vacuum control valve regulates engine vacuum distribution to the EGR system based on engine control module commands, playing a critical role in emissions control and engine performance.

Key Features:

• OEM Mazda replacement part ensures exact fit and function
• Controls vacuum signal to EGR valve for proper exhaust gas recirculation
• Operates electronically via pulse-width modulation from the ECM
• Constructed with durable materials for reliable long-term performance
• Direct replacement for failed or malfunctioning original equipment

This solenoid valve works by distributing intake manifold vacuum to the EGR valve when commanded by the engine computer. When the EGR system is activated during part-throttle cruise conditions, the solenoid opens to allow vacuum to reach the EGR valve diaphragm. A failed solenoid can result in poor engine performance, rough idle, stalling, or illuminated check engine lights with EGR-related trouble codes. Genuine Mazda parts are manufactured to strict OEM specifications to restore proper emissions system function.