Dorman 306-012 Secondary Air Injection Pump

Overview of the Dorman Secondary Air Injection Pump 306-012

The Dorman Secondary Air Injection Pump 306-012 is designed to support emission control systems in select Buick, Chevrolet, and GMC vehicles. This air injection pump helps reduce harmful emissions by supplying fresh air to the exhaust stream during cold starts.

• Compatible with Buick Envoy, Envoy XL, Chevrolet Trailblazer, Trailblazer EXT, and GMC Rainier
• Inside hose diameters of 0.91 and 1.206 inches for precise fitment
• Includes an 8.5-inch wiring harness with two wires and a female connector
• Constructed with durable plastic housing for corrosion resistance
• Blade-type terminals with two male terminals for secure electrical connection
• Equipped with two hose connectors and one connector for efficient air flow
• Does not include pulley or mounting hardware

Detailed Product Description

The Dorman 306-012 Secondary Air Injection Pump is engineered to meet the specifications required by emission control systems in Buick Envoy, Envoy XL, Chevrolet Trailblazer, Trailblazer EXT, and GMC Rainier models. Featuring a plastic housing, this pump is lightweight yet durable, designed to withstand the under-hood environment. The pump’s two hose connectors accommodate hoses with outside diameters of 1.131 and 1.359 inches, ensuring a proper seal and efficient air delivery. The wiring harness length of 8.5 inches with blade-type terminals and a female connector simplifies installation and electrical integration. This pump does not include a pulley or mounting hardware, so existing components should be reused or sourced separately.

Common Applications and Issues Addressed

• Restores proper secondary air injection to reduce cold start emissions
• Resolves check engine light codes related to air injection pump failure
• Eliminates rough idle or poor engine performance caused by faulty air injection
• Prevents failed emissions tests due to malfunctioning secondary air system
• Addresses unusual noises or pump operation failures in the air injection system

Installation Notes and Tips

• Verify compatibility with Buick Envoy, Envoy XL, Chevrolet Trailblazer, Trailblazer EXT, or GMC Rainier before installation
• Reuse existing mounting hardware or acquire appropriate fasteners as none are included
• Ensure proper connection of the blade terminals and secure wiring harness to avoid electrical issues
• Inspect hoses for wear and replace if necessary to maintain airtight seals
• Follow vehicle-specific service manual instructions for removal and installation procedures

Quality Assurance and Warranty

Dorman manufactures the 306-012 Secondary Air Injection Pump to meet or exceed OEM standards for fit, form, and function. The plastic housing and electrical components are designed for durability in demanding automotive environments. While mounting hardware and pulley are not included, the pump is tested for reliable operation. Please consult Dorman’s warranty policy for coverage details on this part.