Dorman 615-284 Engine Intake Manifold - Lower

Overview of Dorman Engine Intake Manifold 615-284

The Dorman 615-284 engine intake manifold is designed for reliable performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Constructed from durable aluminum, this intake manifold supports efficient air flow and engine operation for models such as the Chevrolet Malibu and Pontiac Grand Am.

• Material: Aluminum for lightweight durability
• Dimensions: 18.5 inches length, 12 inches width, 5 inches height
• Mounting: 8 mounting holes with 9.3 mm diameter
• Port Quantity: 6 ports with outlet dimensions of 51 mm and 33 mm
• EGR Ready design for emissions compliance
• Compatible with multiple GM models including Buick Century and Chevrolet Impala
• Street legal for on-road use

Detailed Product Description

This Dorman engine intake manifold (part number 615-284) is crafted from aluminum, providing a balance of strength and weight reduction. Its regular grade type construction ensures consistent performance under normal operating conditions. The manifold features six ports with specific outlet dimensions (51 mm and 33 mm) to optimize air distribution to the engine cylinders. With a uniform height of 5 inches across front, center, and rear sections, it maintains proper fitment and clearance within the engine bay.

Designed without integrated mounts for the air conditioning compressor or alternator, this intake manifold focuses solely on air intake functionality. The EGR-ready feature supports compatibility with exhaust gas recirculation systems, helping maintain emissions standards. This part does not include a gasket or seal, so those components should be sourced separately during installation.

Compatible Vehicles and Applications

This intake manifold is compatible with a range of GM vehicles, including:

• Buick Alero and Century
• Chevrolet Malibu, Impala, Monte Carlo, Montana
• Oldsmobile Silhouette
• Pontiac Grand Am, Aztek, Rendezvous

It is suitable for engine repairs or replacements where the original intake manifold is damaged, worn, or malfunctioning.

Common Issues Addressed by This Intake Manifold

• Air leaks causing rough engine idle or misfires
• Reduced engine performance due to intake manifold cracks or warping
• Failure of EGR system integration affecting emissions
• Corrosion or damage from prolonged use
• Replacement of worn or damaged intake manifold to restore engine efficiency

Installation Notes and Tips

Installation of the Dorman 615-284 intake manifold requires removal of the existing manifold and proper cleaning of the mounting surface. Since this part does not include a gasket or seal, ensure to obtain the correct gasket compatible with your vehicle model. Verify all eight mounting holes align correctly and torque bolts to manufacturer specifications to prevent leaks. Consult vehicle-specific service manuals for detailed installation procedures.

Quality Assurance and Warranty

Dorman manufactures this intake manifold to meet or exceed OEM standards for fit, form, and function. The aluminum construction provides corrosion resistance and durability. While installation instructions are not included, the part is designed for straightforward replacement in compatible GM vehicles. Warranty details should be confirmed through the point of purchase or Dorman's official resources.