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Standard Ignition TH451 Throttle Position Sensor
| Brand | Standard Ignition TH451 |
|---|---|
| Connector Gender | Female |
| Connector Type | Plug In |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Fits | Toyota and Lexus · 31 vehicles |
Plug-in connector. Simplifies installation with a direct electrical connection.
Female connector. Uses a secure mating style for reliable sensor hookup.
4 blade terminals. Provides a straightforward, factory-style electrical interface.
Cross-references Autotecnica TY0319792, Dorman - HELP 75432 and Standard Ignition TH451 for the same application. See all 11.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Throttle Position Sensor for Toyota and Lexus
Standard Ignition TH451 is a throttle position sensor built for select Toyota and Lexus applications with a lever-style throttle linkage. It uses a female plug-in connector, male blade terminals, and a 4-terminal layout for direct electrical connection.
Key Features
- Throttle position sensor for emission control and engine management systems
- Female connector with plug-in design for straightforward harness connection
- 4 male blade terminals for the specified application
- Built for lever-equipped throttle assemblies
- Direct replacement part number TH451
Application Details
This Standard Ignition TH451 throttle position sensor is used to report throttle angle to the engine control system, helping maintain proper fuel delivery, idle response, and transmission shift behavior. It is a fit for select Lexus LX470, GS400, LS400, SC300, and SC400 models, plus Toyota Sequoia, Tundra, and Land Cruiser applications with lever-style throttle linkage. This part cross-references Dorman - HELP 75432 for the same application.
What It Helps Address
- Erratic or delayed throttle signal output
- Rough idle or unstable engine response
- Hesitation during acceleration
- Check engine light related to throttle position sensor faults
- Driveability issues tied to incorrect throttle angle feedback
Installation Notes
- Fits 2004 Lexus LX470, N/A
- Fits 2001-2003 Toyota Sequoia, N/A, w/ Lever
- Fits 2000-2003 Toyota Tundra, N/A, w/ Lever
- Fits 1998-2002 Toyota Land Cruiser, N/A, w/ Lever
- Fits 1998-2000 Lexus GS400, N/A, w/ Lever
- Fits 1997-2000 Lexus LS400, N/A, w/ Lever
- Fits 1998-2000 Lexus LX470, N/A, w/ Lever
- Fits 1997-2000 Lexus SC300, N/A, w/ Lever
- Fits 1997-2000 Lexus SC400, N/A, w/ Lever
Verify connector style, terminal count, and lever-style throttle linkage before installation. Confirm the sensor orientation and electrical connection match the original unit on your Toyota Tundra, Toyota Sequoia, or Lexus LX470 application.
Quality Assurance
Standard Ignition replacement sensors are built to match the specified connector and terminal configuration for the listed applications. Part number TH451 is identified for direct-fit use on the vehicles shown above.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Lexus | LX470 | 4.7L | V8 | N/A | — |
| 2003 | Toyota | Sequoia | — | — | N/A | w/ Lever |
| 2003 | Toyota | Tundra | 4.7L | V8 | N/A | w/ Lever |
| 2002 | Toyota | Land Cruiser | — | — | N/A | w/ Lever |
| 2002 | Toyota | Sequoia | — | — | N/A | w/ Lever |
| 2002 | Toyota | Tundra | 4.7L | V8 | N/A | w/ Lever |
| 2001 | Toyota | Land Cruiser | — | — | N/A | w/ Lever |
| 2001 | Toyota | Sequoia | — | — | N/A | w/ Lever |
| 2001 | Toyota | Tundra | 4.7L | V8 | N/A | w/ Lever |
| 2000 | Lexus | GS400 | — | — | N/A | w/ Lever |
| 2000 | Lexus | LS400 | — | — | N/A | w/ Lever |
| 2000 | Lexus | LX470 | — | — | N/A | w/ Lever |
| 2000 | Lexus | SC300 | — | — | N/A | w/ Lever |
| 2000 | Lexus | SC400 | — | — | N/A | w/ Lever |
| 2000 | Toyota | Land Cruiser | — | — | N/A | w/ Lever |
| 2000 | Toyota | Tundra | 4.7L | V8 | N/A | w/ Lever |
| 1999 | Lexus | GS400 | — | — | N/A | w/ Lever |
| 1999 | Lexus | LS400 | — | — | N/A | w/ Lever |
| 1999 | Lexus | LX470 | — | — | N/A | w/ Lever |
| 1999 | Lexus | SC300 | — | — | N/A | w/ Lever |
| 1999 | Lexus | SC400 | — | — | N/A | w/ Lever |
| 1999 | Toyota | Land Cruiser | — | — | N/A | w/ Lever |
| 1998 | Lexus | GS400 | — | — | N/A | w/ Lever |
| 1998 | Lexus | LS400 | — | — | N/A | w/ Lever |
| 1998 | Lexus | LX470 | — | — | N/A | w/ Lever |
| 1998 | Lexus | SC300 | — | — | N/A | w/ Lever |
| 1998 | Lexus | SC400 | — | — | N/A | w/ Lever |
| 1998 | Toyota | Land Cruiser | — | — | N/A | w/ Lever |
| 1997 | Lexus | LS400 | — | — | N/A | w/ Lever |
| 1997 | Lexus | SC300 | — | — | N/A | w/ Lever |
| 1997 | Lexus | SC400 | — | — | N/A | w/ Lever |
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