Dorman 918-129 Engine Variable Valve Timing (VVT) Solenoid

Reliable Engine Variable Valve Timing Solenoid for Audi Models

The Dorman 918-129 Engine Variable Valve Timing (VVT) Solenoid is designed to restore proper engine timing control in select Audi vehicles. Engineered with a durable plastic housing and a 12-volt electromagnetic activation system, this solenoid ensures consistent performance for your Audi A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, Q5, S4, and S5 models.

Key Features of the Dorman 918-129 VVT Solenoid

• Voltage: 12 volts for standard automotive electrical systems
• Single connector with male plug and socket design for secure electrical connection
• Two terminal quantity ensuring reliable signal transmission
• Durable plastic housing material for corrosion resistance and longevity
• Electromagnetic solenoid activation type for precise valve timing control
• Standard replacement grade suitable for maintaining factory specifications
• Package includes one engine variable timing solenoid

Detailed Product Description

The Dorman 918-129 VVT solenoid is a critical component in the variable valve timing system of compatible Audi vehicles. It operates by using electromagnetic activation to adjust the timing of the engine valves, optimizing engine performance and fuel efficiency. The solenoid features a plastic housing that protects internal components from heat and contaminants, while the plug and socket electrical connector with two terminals ensures a secure and stable connection to the vehicle’s wiring harness. This part is a standard replacement designed to meet OEM specifications, making it a reliable choice for maintaining the performance of your Audi A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, Q5, S4, and S5.

Common Applications and Issues Addressed

• Restores proper variable valve timing function in Audi engines
• Resolves engine performance issues such as rough idling or reduced power
• Eliminates check engine light codes related to VVT solenoid failure
• Improves fuel efficiency by ensuring accurate valve timing
• Prevents engine stalling or hesitation caused by faulty solenoid operation

Installation Notes and Tips

• Ensure the vehicle is turned off and cooled before installation
• Disconnect the battery to prevent electrical shorts during replacement
• Locate the existing VVT solenoid on the engine and disconnect the electrical connector
• Remove mounting bolts carefully and replace with the Dorman 918-129 solenoid
• Reconnect the electrical connector securely to avoid loose connections
• Clear any diagnostic trouble codes after installation to reset the engine control module

Quality Assurance and Warranty

Dorman provides this engine variable valve timing solenoid as a standard replacement part manufactured to meet or exceed OEM quality standards. The 918-129 solenoid undergoes rigorous testing to ensure durability and reliable operation in demanding engine environments. This part is backed by Dorman’s limited warranty, offering coverage against defects in material and workmanship for a specified period, providing confidence in your purchase.