DJ Rock EV407 Engine Exhaust Valve

Engine Exhaust Valve for Kia Rio

DJ Rock EV407 is a premium exhaust valve built for 2001-2002 Kia Rio applications. It is engineered with a nitride-coated surface, a 24.9 mm valve head diameter, a 5.5 mm stem diameter, and a 95.6 mm overall length for direct-fit replacement in the exhaust side of the valvetrain.

Key Features

• Fits 2001-2002 Kia Rio, exhaust position
• Nitride coated for improved wear resistance and corrosion protection
• 24.9 mm valve head diameter
• 5.5 mm stem diameter
• 95.6 mm overall length
• Premium-grade exhaust valve construction
• Single lock groove design

Detailed Description

The DJ Rock EV407 exhaust valve is a direct-fit engine valve for the Kia Rio, designed to control the release of burned gases from the combustion chamber into the exhaust system. Proper exhaust valve operation is critical for cylinder sealing, exhaust flow, and stable engine breathing. The nitride-coated finish adds surface hardness and helps the valve withstand the high heat and mechanical stress common in exhaust service. For buyers searching for a 2001 Kia Rio exhaust valve or a 2002 Kia Rio exhaust valve, EV407 provides the specified dimensions needed for accurate replacement. This part cross-references no listed aftermarket part numbers for the same application.

What It Helps Address

• Burnt or pitted exhaust valve faces
• Loss of compression from poor valve sealing
• Exhaust leakage at the cylinder head
• Valve wear from high-temperature operation
• Reduced engine efficiency caused by damaged valvetrain components

Installation Notes and Tips

Verify valve head diameter, stem diameter, overall length, and lock groove count before installation. Match the exhaust-side application to the cylinder head specifications for the 2001-2002 Kia Rio. Professional machine-shop inspection of the valve seats, guides, and stem seals is recommended during cylinder head service. Clean all mating surfaces and confirm proper valve lash or valvetrain adjustment after assembly.

Quality Assurance

DJ Rock EV407 is manufactured to meet or exceed OEM quality standards using heat-resistant alloy construction and a nitride-coated surface for durability in exhaust-valve service.