Hitachi TPS0008 Throttle Position Sensor

Hitachi TPS0008 Throttle Position Sensor

The Hitachi TPS0008 throttle position sensor provides OE-style throttle angle feedback for precise engine management. It is a direct-fit emission control sensor for select Subaru and Suzuki applications, including Legacy, Forester, Impreza, Esteem, and Vitara models.

Key Features

• Throttle Position Sensor for emission control and engine control input
• Hitachi TPS0008 OE-style replacement
• 3-terminal, blade-style male terminals
• 1 connector, two-bolt mount design
• Actual OE grade construction for listed applications
• Cross-references Hitachi TPS0008 with 13420-77E00 and 22620-4P220 for the same application

Detailed Description

The Hitachi TPS0008 is built to report throttle opening accurately to the vehicle’s engine control system, helping maintain proper fuel delivery, idle response, and throttle-related diagnostics. This throttle position sensor is listed for 1998 Subaru Forester, 1998 Subaru Impreza, 1998-1999 Subaru Legacy, 1999 Suzuki Esteem, and 2004 Suzuki Vitara, with OE-style fitment details that include a two-bolt mount, three terminals, and a single connector. If you are replacing a throttle position sensor on a Subaru Legacy, Subaru Forester, or Suzuki Vitara, TPS0008 is the part number to verify against your original unit.

What It Helps Address

• Throttle position signal errors
• Rough or unstable idle related to throttle input
• Delayed throttle response
• Check engine lights tied to TPS circuit faults
• Driveability issues caused by incorrect throttle angle readings

Installation Notes and Tips

Confirm connector style, terminal count, and two-bolt mounting pattern before installation. Compare the original sensor’s shape and indexing to the Hitachi TPS0008 and verify vehicle year, make, and model against the listed fitment. After installation, clear any stored diagnostic trouble codes and perform throttle relearn or calibration procedures if required by the vehicle.

Quality Assurance

Hitachi supplies OE-grade emission control components for the listed applications, and TPS0008 is specified as Actual OE for the vehicles shown. Verify part number TPS0008 against the original sensor and the vehicle’s service information before ordering.