Continental 408-237-221-004Z Fuel Injection Throttle Body Assembly

Overview of Continental Fuel Injection Throttle Body Assembly

The Continental 408-237-221-004Z Fuel Injection Throttle Body Assembly is designed for precise air intake control in select Audi and Volkswagen models. This electric throttle body assembly supports optimal engine performance and responsiveness for vehicles such as the Audi A4, A4 Quattro, A6, A6 Quattro, and Volkswagen Passat.

• Voltage: 12V electric throttle body
• Housing Material: Durable aluminum construction
• Throttle Bore Shape: Circular with 69.72 mm maximum air intake port diameter
• Terminal Type: 7 male blade terminals with oval connector shape
• Includes Idle Air Control Motor and Throttle Position Sensor
• Mounting hardware and gasket/seal not included
• Color: Silver matte finish

Technical Details and Features

This throttle body assembly features a 12-volt electric throttle control system, ensuring accurate throttle response and improved fuel injection management. The aluminum housing provides strength and heat resistance, while the circular throttle bore with a 69.72 mm diameter allows for efficient air flow. The assembly includes an integrated idle air control motor and throttle position sensor, which are essential for maintaining stable idle speeds and precise throttle position feedback to the engine control unit (ECU). The connector is oval-shaped with seven male blade terminals, designed for secure electrical connections. Note that mounting hardware and gaskets or seals are not included with this part.

Compatible Vehicles and Applications

This Continental throttle body assembly is compatible with the following vehicles:

• Audi A4 and A4 Quattro
• Audi A6 and A6 Quattro
• Volkswagen Passat

It is specifically engineered to meet the air and fuel delivery requirements of these models, ensuring proper fitment and function when replacing the original throttle body.

Common Issues Addressed by This Throttle Body

• Erratic or unstable idle speeds
• Reduced engine performance or throttle response
• Check engine light related to throttle position sensor faults
• Engine stalling or hesitation during acceleration
• Air intake inconsistencies affecting fuel injection

Installation Notes and Tips

Installation of the Continental 408-237-221-004Z throttle body assembly requires careful handling to avoid damage to the integrated sensors and motor. Ensure the electrical connector matches the oval shape with seven male blade terminals. Since mounting hardware and gaskets are not included, reuse existing components if in good condition or source replacements separately. Proper torque specifications should be followed to prevent air leaks or mechanical issues. It is recommended to perform a throttle body relearn procedure after installation to calibrate the idle air control motor and throttle position sensor with the vehicle’s ECU.

Quality Assurance and Warranty

Continental manufactures this throttle body assembly to meet OEM standards for durability and performance. The aluminum housing and integrated sensors are tested for reliability under typical operating conditions. While specific warranty details may vary, Continental parts generally come with a limited warranty covering defects in materials and workmanship. Verify warranty terms with the supplier or manufacturer documentation prior to installation.