DJ Rock EV971 Engine Exhaust Valve

Engine Exhaust Valve for Toyota and Lexus V8 Applications

DJ Rock EV971 is a premium nitride-coated engine exhaust valve built for direct-fit replacement in select Toyota and Lexus engines. With a 29 mm valve head diameter, 5.5 mm stem diameter, and 95.1 mm overall length, it matches the specified exhaust-valve dimensions for a wide range of 4Runner, Tundra, Sequoia, Land Cruiser, GX470, LX470, LS430, GS430, GS400, LS400, SC400, and SC430 applications.

Use EV971 when you need a precision exhaust valve for engine breathing, combustion sealing, and consistent exhaust-gas control in high-heat valvetrain environments.

Key Features

• Nitride-coated exhaust valve for improved surface durability
• 29 mm valve head diameter
• 5.5 mm stem diameter
• 95.1 mm overall length
• 1 lock groove design
• Premium-grade replacement part
• Direct-fit specification for select Toyota and Lexus engines

Detailed Description

The DJ Rock EV971 exhaust valve is engineered for the exhaust side of the valvetrain, where it manages the release of burned gases from the combustion chamber into the exhaust system. Its nitride-coated surface adds wear resistance and corrosion protection, while the heat-resistant valve construction supports stable operation under repeated thermal cycling. This part number EV971 is specified for vehicles including the Toyota 4Runner, Tundra, Sequoia, Land Cruiser, and Lexus GX470, LX470, LS430, GS430, GS400, LS400, SC400, and SC430. For buyers searching for a Toyota 4Runner exhaust valve or Lexus LS430 exhaust valve replacement, EV971 provides the listed OE-style dimensions needed for proper fitment.

This part cross-references no listed aftermarket part numbers in the provided data.

What This Part Helps Address

• Burnt or damaged exhaust valves
• Loss of compression from valve sealing issues
• Exhaust leakage caused by worn valve faces or stems
• Excessive valvetrain wear from heat and friction
• Restoration of proper exhaust flow in rebuilt engines

Installation Notes and Tips

Verify valve head diameter, stem diameter, overall length, and lock groove count before installation. EV971 is listed for exhaust-valve applications only, so confirm cylinder-head and engine-code requirements for your specific Toyota or Lexus model before assembly. Professional cylinder-head service, including inspection of guides, seats, and seals, is recommended during engine rebuild or valve replacement work.

Quality Assurance

DJ Rock EV971 is manufactured to meet or exceed OEM quality standards using heat-resistant materials and a nitride-coated finish for added durability in demanding exhaust-valve service.