Dorman Plastic Intake Manifold for Buick/Chevrolet — 615-380 OE-FIX Kit with Gaskets & Patented PCV Retaining Pin

If your vehicle’s original intake manifold has caused high oil use or check-engine lights due to a loose PCV valve, this Dorman replacement was engineered to fix that exact failure. Manufactured in the United States from a durable nylon polymer, the assembly arrives as a complete kit with the gaskets, O-rings, and screws needed for installation, helping you avoid sourcing multiple parts.

What design change prevents the original PCV valve failure?

Dorman addressed the common failure by adding a dedicated retaining pin that secures the internal PCV valve, stopping it from becoming dislodged and causing oil consumption issues. The redesigned mounting geometry and robust polymer construction reduce stress points that led to cracking and warping in earlier parts.

• Patented retaining pin secures the PCV valve in place
• Improved internal routing to minimize oil passage into intake
• Tough nylon polymer resists heat-related distortion
• Factory-matched mounting points for straightforward fitment

Which vehicles and years does this part fit?

This manifold is compatible with a range of Buick and Chevrolet models across multiple years; always verify fitment with your vehicle trim before purchasing. Use the garage tool on the product page and confirm the fitment bar; if an information icon appears, hover to review additional notes that might affect compatibility.

• Buick Encore: 2013–2021 model years
• Chevrolet Cruze and Cruze Limited: 2011–2016 model years depending on trim
• Chevrolet Sonic: 2012–2020 model years
• Chevrolet Tracker and Trax: select 2013–2021 model years

What comes in the kit and what do I need for installation?

The Dorman kit is supplied with the essential gaskets and seals so you can complete the intake manifold swap without ordering extra components. It includes the throttle body gasket, port gaskets, fuel injector O-rings, MAP sensor O-ring, and mounting screws, which simplifies the repair and reduces the chance of leaks from reused seals.

• Throttle body gasket and intake port gaskets included
• Fuel injector O-rings and MAP sensor O-ring supplied
• Mounting screws are packaged with the manifold for one-stop installation
• Recommended: inspect valve cover PCV diaphragm and replace if damaged

How durable is the replacement compared to original equipment?

Dorman builds this manifold in the U.S. from a reinforced nylon polymer engineered to withstand heat cycles and engine bay stresses better than the original design. The reinforced material and revised construction lower the risk of cracking and warping that can lead to vacuum leaks and performance issues.

• Engineered and manufactured in the United States
• Nylon polymer resists thermal deformation and impact
• Improved structural ribs and sealing surfaces for longer life
• Backed by Dorman’s OE FIX engineering improvements

Who is this for: The Dorman 615-380 is aimed at owners and technicians replacing a failed intake manifold on compatible Buick and Chevrolet models who want a one-package solution that addresses a known PCV valve failure. It’s ideal for DIY mechanics and repair shops that prefer a direct-fit replacement with updated design features and all required gaskets and fasteners included. Before ordering, enter your vehicle details in the product’s garage tool to confirm exact fitment for your trim and year.