Standard Ignition V491 PCV Valve

PCV Valve for Select GM Applications

Standard Ignition V491 is a direct-fit PCV valve for select Buick, Chevrolet, Pontiac, and Saturn applications. It restores crankcase ventilation control with OE-style air flow calibration for engines that need a precise replacement valve.

Built with a spring-loaded valve and sliding pintle, this PCV valve is made to regulate crankcase vapors under normal engine operating conditions. The 3/8 in. hose connector and straight nipple orientation support a clean replacement on the listed vehicles.

Key Features

• Direct-fit PCV valve replacement for OE damaged units
• Spring-loaded valve with sliding pintle for controlled air flow
• Constructed from industrial-grade materials for oil and heat resistance
• 1 hose connector, 3/8 in. hose size, 10 mm hose size
• Straight nipple orientation for listed applications
• Standard Ignition V491 replacement part number

Detailed Description

Standard Ignition V491 is engineered for crankcase ventilation service on vehicles such as the 2013-2016 Buick Verano, 2011-2013 Buick Regal, 2008-2010 Chevrolet Cobalt, 2008-2010 Chevrolet HHR, 2007-2010 Saturn Sky, and 2007-2008 Pontiac Solstice. It is manufactured and tested to match OE fit, form, and function, helping maintain proper crankcase-to-intake manifold flow control. This part cross-references AC Delco 12589440 for the same application.

What It Helps Address

• Rough idle caused by a worn or sticking PCV valve
• Excess crankcase pressure from restricted ventilation flow
• Oil vapor buildup in the intake system
• Check engine concerns related to crankcase ventilation performance
• Unstable air flow control in the crankcase ventilation circuit

Installation Notes and Tips

Verify hose size, connector count, and nipple orientation before installation. This V491 PCV valve uses a 3/8 in. hose connection and straight nipple layout, so it should be matched to the original routing on the vehicle. Confirm the application by year, make, and model before replacing the existing valve.

Quality Assurance

Standard Ignition manufactures and tests this PCV valve to meet OE quality expectations for fit, form, and function. The internal spring-loaded design and durable material construction are selected to withstand oil exposure and elevated engine temperatures.