Genuine Denso EGR Valve DEG0122

Ensure optimal engine performance and emissions compliance with the Denso EGR Valve DEG0122 (SKU 23-181). This premium OEM-quality exhaust gas recirculation valve is engineered by Denso to precisely control exhaust gas flow back into the intake system, reducing nitrogen oxide (NOx) emissions while maintaining optimal engine performance. Designed for Mazda CX-5 and Mazda6, this EGR valve ensures dependable emissions control system performance and long service life for your Mazda.

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Key Features & Benefits

• Genuine Denso Quality - OEM-grade component built to exacting standards
• Mazda Application - Designed for CX-5 and Mazda6 models
• Precise EGR Control - Accurately controls exhaust gas recirculation
• Emissions Compliance - Reduces NOx emissions for cleaner operation
• Optimal Performance - Maintains engine power and efficiency
• Reduced Engine Temperatures - Lowers combustion temperatures
• Better Fuel Economy - Proper EGR operation improves efficiency
• Prevents Carbon Buildup - Quality construction resists carbon deposits
• Reliable Operation - Consistent performance in all conditions
• Long Service Life - Durable construction for extended reliability

Technical Specifications

• Denso Part Number: DEG0122
• SKU: 23-181
• Component Type: EGR Valve (Exhaust Gas Recirculation)
• Primary Application: Mazda CX-5, Mazda6
• Weight: 1.5 kg (approximate)

Vehicle Compatibility

This Denso EGR valve is compatible with the following Mazda models:

• Mazda CX-5
• Mazda6

Always verify fitment for your specific vehicle and engine configuration.

CLICK HERE TO CHECK IF THIS FITS YOUR VEHICLE.

OEM Part Number Cross-Reference

This Denso EGR valve replaces the following OEM part numbers:

• DEG0122 (Denso)
• SH0120300A (Mazda)
• EGR-181 / EGR181

Common Symptoms of Faulty EGR Valves

• Check engine light with EGR codes (P0400, P0401, P0402, P0403, P0404, P0405)
• Rough idle or engine stalling
• Loss of power during acceleration
• Poor fuel economy
• Black smoke from exhaust
• Engine knocking or pinging
• Failed emissions test
• Increased engine temperatures
• Hesitation or stumbling under load

What Does an EGR Valve Do?

The EGR (Exhaust Gas Recirculation) valve is a critical emissions control component that recirculates a portion of exhaust gases back into the engine's intake system. By reintroducing inert exhaust gases into the combustion chamber, the EGR system lowers peak combustion temperatures, which significantly reduces the formation of harmful nitrogen oxide (NOx) emissions. The engine control unit (ECU) precisely controls the EGR valve opening based on engine speed, load, and temperature to balance emissions reduction with optimal engine performance. The EGR system is essential for meeting strict emissions standards while maintaining power output and fuel efficiency.

Why Choose Genuine Denso EGR Valves?

Genuine Denso EGR valves are designed to meet or exceed original equipment specifications, ensuring precise exhaust gas control, reliable operation, and long service life. As a world-leading automotive supplier and original equipment manufacturer for Mazda and other major automakers, Denso engine management components are built to exacting standards with precision engineering and quality materials. Using genuine Denso EGR valves ensures proper fitment, maintains your vehicle's emissions control system integrity, prevents premature carbon buildup, and provides the reliability you need for worry-free driving.

Installation Notes

Professional installation is recommended for best results. EGR valve replacement requires disconnecting the battery, locating the EGR valve (typically on the intake manifold), disconnecting the electrical connector and vacuum hoses (if equipped), removing the EGR cooler connections (if applicable), and removing the mounting bolts. Clean the mounting surfaces thoroughly to remove carbon deposits. Install the new EGR valve with new gaskets and torque the mounting bolts to manufacturer specifications. Reconnect all electrical connectors and hoses. Clear any diagnostic trouble codes and test drive to verify proper operation. Consider cleaning the intake manifold and EGR cooler during replacement to ensure optimal system performance.

Why Choose LM15 Motorsport?

We supply genuine Denso engine management components with fast shipping across Australia. Every EGR valve is carefully inspected to ensure you receive an authentic Denso component for reliable emissions control system performance. Our team has extensive experience with Mazda vehicles and can provide expert advice on emissions system maintenance and troubleshooting.

Need help with fitment or installation? Contact our expert team for advice specific to your Mazda CX-5 or Mazda6 EGR valve requirements.