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Spectra OS5501 Oxygen Sensor - Downstream Left or Downstream Right
Spectra OS5501 Oxygen Sensor for Lexus LS430 and SC430
The Spectra OS5501 oxygen sensor is an OE-style emission control replacement for select Lexus applications. It is built with engineering, manufacturing, and quality control processes aimed at meeting or exceeding original equipment performance.
Key Features
- Direct replacement oxygen sensor for emission control service
- OE-level performance focus for accurate exhaust feedback
- Built by Spectra for select Lexus LS430 and Lexus SC430 applications
- Cross-references Delphi ES20372 for the same application
- Part number OS5501 for catalog and fitment lookup
Detailed Description
Use the Spectra OS5501 when replacing a worn or failing oxygen sensor on 2001-2006 Lexus LS430 and 2002-2005 Lexus SC430 models. This sensor supports the engine management system by monitoring exhaust oxygen content so the vehicle can maintain proper fuel control and emissions performance. The OS5501 is a practical choice for drivers servicing a Lexus LS430 downstream sensor or a Lexus SC430 downstream sensor with OE-style fitment requirements.
This part cross-references Delphi ES20372 for the same application. The OS5501 part number is also useful when verifying catalog listings for downstream left or downstream right sensor positions on these Lexus models.
What It Helps Address
- Check engine light related to oxygen sensor faults
- Rough fuel control caused by inaccurate exhaust readings
- Emissions test failures tied to sensor performance
- Slow sensor response from age or contamination
- Incorrect downstream oxygen sensor readings on Lexus LS430 and SC430
Installation Notes and Tips
Confirm the exact position before ordering: Fits 2001-2006 Lexus LS430, Downstream Right; Fits 2001-2006 Lexus LS430, Downstream Left; Fits 2002-2005 Lexus SC430, Downstream Right; Fits 2002-2005 Lexus SC430, Downstream Left. Compare the connector, sensor location, and original part number before installation. Clear diagnostic trouble codes after replacement and verify system operation with a scan tool if required.
Quality Assurance
Spectra Premium states that its engineering, manufacturing technology, and quality control processes are used to produce oxygen sensors that meet or exceed the performance of the original equipment they replace.
This part fits 20 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2006 | Lexus | LS430 | 4.3L | V8 | Downstream Right | |
| 2006 | Lexus | LS430 | 4.3L | V8 | Downstream Left | |
| 2005 | Lexus | LS430 | 4.3L | V8 | Downstream Right | |
| 2005 | Lexus | LS430 | 4.3L | V8 | Downstream Left | |
| 2005 | Lexus | SC430 | 4.3L | V8 | Downstream Right | |
| 2005 | Lexus | SC430 | 4.3L | V8 | Downstream Left | |
| 2004 | Lexus | LS430 | 4.3L | V8 | Downstream Right | |
| 2004 | Lexus | LS430 | 4.3L | V8 | Downstream Left | |
| 2004 | Lexus | SC430 | 4.3L | V8 | Downstream Right | |
| 2004 | Lexus | SC430 | 4.3L | V8 | Downstream Left | |
| 2003 | Lexus | LS430 | 4.3L | V8 | Downstream Right | |
| 2003 | Lexus | LS430 | 4.3L | V8 | Downstream Left | |
| 2003 | Lexus | SC430 | 4.3L | V8 | Downstream Right | |
| 2003 | Lexus | SC430 | 4.3L | V8 | Downstream Left | |
| 2002 | Lexus | LS430 | 4.3L | V8 | Downstream Right | |
| 2002 | Lexus | LS430 | 4.3L | V8 | Downstream Left | |
| 2002 | Lexus | SC430 | 4.3L | V8 | Downstream Right | |
| 2002 | Lexus | SC430 | 4.3L | V8 | Downstream Left | |
| 2001 | Lexus | LS430 | 4.3L | V8 | Downstream Right | |
| 2001 | Lexus | LS430 | 4.3L | V8 | Downstream Left |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.