Dorman Intake Manifold Replacement Kit for Buick/Chevrolet 1.4L — 615-380 Nylon, Includes Gaskets & PCV Retainer

The Dorman 615-380 is a redesigned plastic intake manifold kit that replaces the original unit and includes gaskets and O-rings, featuring a built-in retaining solution to prevent PCV valve dislodgement.

This intake manifold addresses a known failure mode in certain Buick and Chevrolet 1.4L engines where the factory manifold allowed the internal PCV valve to become dislodged, often causing elevated oil consumption and poor performance. Dorman’s OE FIX redesign uses an improved retaining feature and arrives as a complete installation kit, saving time and reducing the chance of repeated failure when compared with the original equipment piece.

How does the redesigned manifold prevent PCV valve issues?

The 615-380 replaces the original housing with a redesigned internal geometry and a retaining pin that secures the PCV valve in place. This change helps keep the valve correctly seated under engine vacuum and thermal cycling, reducing the risk of valve migration that can lead to oil consumption.

• Integrated retaining pin to lock the PCV valve position
• Reinforced mounting points to withstand vibration
• Engineered flow paths to maintain correct crankcase ventilation

What comes in the complete installation kit?

Along with the intake manifold, Dorman ships the 615-380 as a full repair kit so you receive the necessary gaskets and seals for a proper install. That minimizes the chance of vacuum leaks or installation errors and reduces the need to source additional components separately.

• Throttle body gasket and port gaskets included
• Fuel injector O-rings, MAP sensor O-ring, and mounting screws
• Everything packaged to replace common wear items during manifold service

Is this manifold durable and where is it made?

Dorman’s intake manifold is molded from a high-strength nylon polymer designed to resist cracking and warping from heat and vibration. It is engineered and manufactured in the United States to provide consistent fit and material properties compared with aging OEM plastic parts.

• Tough nylon polymer resists thermal degradation
• Quality control and manufacturing based in the U.S.
• Designed to match original mounting and vacuum ports

Will I need any other parts when replacing the manifold?

While the kit covers most common consumables, related components like a damaged valve cover PCV diaphragm can cause repeated issues and may require replacement at the same time. Use the vehicle fitment tool to confirm compatibility and check for any fitment notes before purchasing.

• Inspect the valve cover and PCV diaphragm for damage
• Confirm fitment using the online garage tool for your trim and year
• Replace any cracked hoses or worn fasteners during installation

Who is this for: The Dorman 615-380 intake manifold kit is intended for DIY mechanics and professional technicians servicing select Buick Encore, Chevrolet Cruze, Sonic, Tracker, and Trax models with the affected 1.4L engines. It’s especially useful for vehicles experiencing elevated oil consumption or known PCV-valve-related manifold failures, and for anyone who wants a ready-to-install replacement that reduces the risk of repeat warranty repairs.