DJ Rock EV469 Engine Exhaust Valve

Engine Exhaust Valve for Mazda Applications

DJ Rock EV469 is a premium nitride-coated engine exhaust valve built for direct-fit replacement in select Mazda engines. It is engineered for the exhaust side, where high heat and repeated cycling demand stable sealing, accurate dimensions, and durable materials.

• Nitride-coated surface for improved wear resistance and corrosion protection
• 30 mm valve head diameter
• 104.6 mm overall length
• 5.96 mm stem diameter
• 1 lock groove design
• Premium-grade exhaust valve for engine valve train service

Detailed Product Overview

Part number EV469 is an engine exhaust valve designed to release burnt gases from the combustion chamber into the exhaust system. The valve uses heat-resistant alloy construction with a nitride-coated finish to help maintain structural stability under exhaust heat and mechanical stress. Its application-specific dimensions support proper fitment and consistent valve train operation in Mazda 3, Mazda CX-7, and Mazda 6 engines listed below. EV469 is a direct replacement choice for exhaust valve service where accurate head diameter, stem diameter, and overall length are critical.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Compatible With

• Fits 2007-2013 Mazda 3, Exhaust; Nitride Coated; 1 Groove; 30mm Head Dia., 5.96mm Stem Dia., 104.6mm O.A.L.
• Fits 2007-2012 Mazda CX-7, Exhaust; Nitride Coated; 1 Groove; 30mm Head Dia., 5.96mm Stem Dia., 104.6mm O.A.L.
• Fits 2006-2007 Mazda 6, Exhaust; Nitride Coated; 1 Groove; 30mm Head Dia., 5.96mm Stem Dia., 104.6mm O.A.L.

Common Service Issues

• Exhaust valve wear from prolonged high-temperature operation
• Loss of sealing at the valve face
• Valve stem wear or dimensional mismatch during rebuilds
• Reduced engine breathing from damaged exhaust valves
• Corrosion or heat-related fatigue in the valve train

Installation Notes and Tips

Verify valve head diameter, stem diameter, overall length, and lock groove count before installation. Match the exhaust-side application exactly to the engine being serviced, and inspect related valvetrain components such as guides and stem seals during cylinder head work. For Mazda 3, Mazda CX-7, and Mazda 6 repairs, confirm the listed exhaust-valve specifications against the original part before assembly.

Quality Assurance

DJ Rock EV469 is manufactured to meet or exceed OEM quality standards and uses heat-resistant materials with a nitride-coated finish for durability in demanding exhaust-valve service.