DJ Rock EV489 Engine Exhaust Valve

Engine Exhaust Valve for Kia Spectra and Sephia

DJ Rock EV489 is a premium nitride-coated engine exhaust valve built for direct-fit replacement in select Kia applications. It is specified with a 28 mm valve head diameter, 6 mm stem diameter, 102 mm overall length, and a single lock groove for the listed exhaust-valve applications.

Key Features

• Nitride-coated valve surface for added wear resistance and corrosion protection
• 28 mm valve head diameter for the listed Kia exhaust-valve applications
• 6 mm stem diameter and 102 mm overall length
• Single lock groove design
• Premium-grade replacement valve for engine valve train service
• Compatible with 2000-2004 Kia Spectra exhaust applications
• Compatible with 1998-2001 Kia Sephia exhaust applications

Detailed Product Overview

The DJ Rock EV489 exhaust valve is engineered for controlled release of combustion gases from the cylinder head into the exhaust system. Its nitride-coated construction helps the valve withstand high exhaust temperatures, reduce friction, and maintain structural stability under repeated thermal cycling. This part number, EV489, is a direct-fit exhaust valve for the specified Kia Spectra and Kia Sephia engine applications, making it a practical choice for valve train repair and cylinder head service.

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

Common Problems This Part Addresses

• Burnt or recessed exhaust valve conditions
• Loss of compression from worn valve sealing surfaces
• Exhaust leakage caused by valve face wear or heat damage
• Valve sticking from heat-related deposits or surface wear
• Reduced engine performance tied to damaged exhaust-valve components

Installation Notes and Tips

Verify valve head diameter, stem diameter, overall length, and lock groove count before installation. This EV489 exhaust valve is listed for the exhaust position only, so confirm cylinder head specifications and match the valve to the correct Kia Spectra or Kia Sephia engine application. Professional cylinder head inspection, valve seat checking, and proper valve stem clearance measurement are recommended during service.

Quality Assurance

DJ Rock specifies this valve as a premium replacement built to meet or exceed OEM quality expectations for the listed applications. The nitride-coated finish and heat-resistant material selection are used to support durability in high-temperature exhaust service.