Dorman Engine Valve Cover for GM 4-Cylinder (264-968) — Polymer, Includes Gasket & Bolts

The Dorman 264-968 Engine Valve Cover is a direct-fit replacement valve cover that arrives with a new gasket and bolts to restore sealing and PCV function on compatible GM 4-cylinder engines.

This injection-molded polymer valve cover is engineered to match the original equipment part’s fit and heat tolerance while supplying everything needed for a one-part repair. It addresses leaks and PCV diaphragm issues that can arise with worn or damaged covers and is quality-tested for fit and durability. Before ordering, confirm compatibility by entering your vehicle’s make, model, and trim into the fitment tool.

How does this valve cover restore engine sealing and PCV performance?

Replacing a cracked or warped valve cover eliminates oil leaks and restores the proper crankcase ventilation path when the PCV diaphragm is replaced or integrated. The included gasket and mounting bolts ensure a consistent seal and correct clamping force across the cover flange.

• Injection-molded polymer matches OEM contours for consistent sealing.
• New gasket provided to replace hardened or damaged seals.
• Included bolts prevent reuse of stretched or corroded fasteners.

Will this part fit my vehicle and how do I confirm fitment?

This valve cover fits multiple GM compact and subcompact models across several years, but trim-level differences can affect compatibility. Use the site’s garage or fitment tool to enter exact year, make, model, and trim before purchasing to ensure correct match.

• Compatible with select Buick, Cadillac, Chevrolet models listed on the product page.
• Check engine code and sub-model (e.g., Cruze, Sonic, Trax) in the fitment tool.
• Contact customer support if you have nonstandard engine options or modifications.

What materials and testing back this replacement valve cover?

The cover is made from injection-molded polymer chosen for heat resistance and dimensional stability, and it undergoes try-on and material tests to verify fit and long-term service. These processes reduce installation surprises and improve the likelihood of a durable repair.

• Polymer construction resists engine bay heat and vibration.
• Try-on testing confirms bolt hole alignment and flange conformity.
• Material testing checks for toughness and thermal aging resistance.

Are there related repairs to consider when replacing this valve cover?

Valve cover failures can coincide with intake or PCV system issues; inspect the intake manifold and PCV valve when replacing the cover. If the intake manifold is missing a PCV valve or shows damage, replace it to prevent repeat issues and ensure correct crankcase ventilation.

• Inspect intake manifold for a functioning PCV valve or port.
• Replace any brittle hoses or damaged PCV diaphragms during the job.
• Torque new bolts to manufacturer specs to avoid leaks or distortion.

Who is this for: The Dorman 264-968 Engine Valve Cover is aimed at DIY enthusiasts and professional technicians repairing leaks or PCV-related performance issues on compatible Buick, Cadillac, and Chevrolet 4-cylinder engines. It’s ideal if you need a complete, ready-to-install replacement with new sealing components and tested fitment—particularly when the original cover is cracked, warped, or its diaphragm has failed.