Standard Ignition TH451 Throttle Position Sensor

Reliable Throttle Position Sensor for Lexus and Toyota Vehicles

The Standard Ignition TH451 Throttle Position Sensor is designed to provide accurate throttle position readings for select Lexus and Toyota models. This sensor helps maintain optimal engine performance and fuel efficiency by delivering precise data to the vehicle's engine control unit.

• Compatible with Lexus GS400, LS400, SC300, SC400, LX470
• Fits Toyota Land Cruiser, Sequoia, Tundra models
• OEM-quality replacement part number TH451
• Ensures accurate throttle position feedback for engine management
• Durable construction for long-lasting performance

Product Details and Compatibility

The Standard Ignition TH451 throttle position sensor is engineered to meet the specifications of original equipment for Lexus and Toyota vehicles. It is compatible with a range of models including the Lexus GS400, LS400, SC300, SC400, LX470, and Toyota Land Cruiser, Sequoia, and Tundra. This sensor monitors the position of the throttle valve and sends this information to the engine control module, which adjusts fuel injection and ignition timing accordingly. Using the correct sensor ensures smooth acceleration, improved fuel economy, and reduced emissions.

Common Applications and Problem Resolution

• Corrects erratic idle or stalling issues
• Resolves hesitation or poor acceleration
• Eliminates check engine light related to throttle position sensor faults
• Improves throttle response and drivability
• Prevents transmission shifting problems linked to throttle input

Installation Notes and Tips

Installation of the TH451 throttle position sensor requires basic automotive tools and mechanical knowledge. Before installation, disconnect the vehicle battery to prevent electrical shorts. Ensure the throttle body is clean and free of debris. Align the sensor properly with the throttle shaft and secure it firmly to avoid misalignment. After installation, clear any diagnostic trouble codes and perform a throttle position sensor relearn procedure if required by the vehicle’s service manual.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and fitment. The TH451 throttle position sensor undergoes rigorous quality control testing to maintain consistency and durability. This part is backed by a limited warranty against defects in material and workmanship, providing confidence in its long-term use.