Dorman 977-309 Fuel Injection Throttle Body

Overview of Dorman Fuel Injection Throttle Body 977-309

The Dorman 977-309 Fuel Injection Throttle Body is designed for precise air and fuel delivery in Volkswagen vehicles. Engineered with an electronic throttle body type, it supports optimal engine performance for Volkswagen Cabrio, Golf, and Jetta models.

• Compatible with Volkswagen Cabrio, Golf, and Jetta
• Electronic throttle body design for accurate throttle control
• Constructed from durable aluminum with a gray finish
• 60mm bore diameter with flanged inlet and non-flanged outlet
• Designed for gas fuel injection systems

Detailed Product Features and Specifications

This throttle body features a 60mm bore diameter and inlet diameter, ensuring consistent airflow for gas fuel systems. The inlet is flanged (Embridado) for secure attachment, while the outlet is non-flanged, designed for a single hose assembly. Made from aluminum, the throttle body offers durability and heat resistance, finished in gray to resist corrosion. The electronic throttle body type provides precise throttle response without manual adjustment, as it is non-adjustable. This part does not include mounting hardware, gaskets, seals, fuel injectors, idle air control motor, or throttle body spacer.

Applications and Common Issues Addressed

• Restores proper throttle response in Volkswagen Cabrio, Golf, and Jetta models
• Resolves rough idling or stalling caused by faulty throttle bodies
• Improves fuel injection efficiency and engine performance
• Eliminates hesitation or poor acceleration due to throttle body wear
• Addresses check engine light codes related to throttle position sensor or airflow

Installation Notes and Tips

Installation requires removal of the existing throttle body and careful alignment of the 60mm flanged inlet. Since mounting hardware and gaskets are not included, ensure you have the correct components before installation. Proper torque specifications should be followed to avoid air leaks. Electronic connections must be securely attached to maintain throttle control functionality. It is recommended to perform a throttle body relearn procedure after installation to ensure optimal engine performance.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 977-309 throttle body undergoes rigorous quality control to ensure durability and reliable operation in Volkswagen vehicles. Warranty coverage details should be confirmed with the parts provider, as Dorman typically offers limited warranties on their components.