DJ Rock EV3140 Engine Exhaust Valve

Engine Exhaust Valve for GM 4.2L Applications

DJ Rock EV3140 is a nitride-coated engine exhaust valve built for direct-fit replacement in select GM and related applications. It is engineered with a 33.5 mm valve head diameter, 5.95 mm stem diameter, 107.8 mm overall length, and a 3-groove lock design for the specified exhaust-valve applications.

Use EV3140 when you need a precision exhaust valve for Chevrolet Colorado, GMC Canyon, and other listed vehicles with the matching engine codes and dimensions.

Key Features

• Nitride-coated exhaust valve for improved surface durability
• 33.5 mm valve head diameter
• 5.95 mm stem diameter
• 107.8 mm overall length
• 3-groove lock groove design
• Premium-grade replacement part
• Direct-fit application-specific design

Detailed Description

The DJ Rock EV3140 exhaust valve is designed to control the release of burned gases from the combustion chamber into the exhaust system, helping maintain proper engine breathing and combustion efficiency. Its heat-resistant construction and nitride-coated surface are selected for exhaust-side thermal load, wear resistance, corrosion protection, and reduced friction under repeated high-temperature operation. This part cross-references V3046 for the same application.

Compatible With 2007-2012 Chevrolet Colorado, exhaust; 2007-2012 GMC Canyon, exhaust; 2007-2010 Hummer H3, exhaust; 2009-2010 Hummer H3T, exhaust; 2006-2009 Chevrolet Trailblazer, exhaust; 2006-2009 GMC Envoy, exhaust; 2006-2009 Saab 9-7x, exhaust; 2006-2008 Isuzu Ascender, exhaust; 2007-2008 Isuzu i-290, exhaust; 2007-2008 Isuzu i-370, exhaust; 2006-2007 Buick Rainier, exhaust; 2006 Chevrolet Trailblazer EXT, exhaust; and 2006 GMC Envoy XL, exhaust.

What This Part Helps Address

• Burnt or damaged exhaust valve surfaces
• Loss of compression from valve sealing issues
• Exhaust-side valve wear from high heat exposure
• Corrosion or friction-related valve deterioration
• Incorrect valve dimensions during engine repair

Installation Notes and Tips

Verify valve head diameter, stem diameter, overall length, and lock groove count before installation. Match the engine code and exhaust-valve application listed for your vehicle, including Chevrolet Colorado, GMC Canyon, and other supported models. Professional cylinder head service, including inspection of guides, seals, and valve seats, is recommended during installation.

Quality Assurance

DJ Rock EV3140 is manufactured to meet or exceed OEM quality standards using heat-resistant alloy construction and a nitride-coated finish for durability in exhaust-valve service.