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Denso 234-4211 Oxygen Sensor - Upstream
| Brand | Denso 234-4211 |
|---|---|
| Position | Upstream |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 9.84 |
| Product line | OE Style |
| Fits | Lexus · 9 vehicles |
OE style replacement. Precision-built for an exact, first-time fit.
Heated sensor. Helps support efficient engine performance and fuel use.
Aluminum oxide trap layer. Protects the ceramic element for longer service life.
Cross-references ACDelco 213-1455, BorgWarner OS1437 and BorgWarner OS1449 for the same application. See all 12.
OE-Style Oxygen Sensor for Lexus Upstream Applications
This Denso OE Style oxygen sensor is a direct-fit, heated replacement built for precise signal control and reliable exhaust monitoring. It is engineered for specific-fit applications on Lexus SC400 and Lexus LS400 models with upstream placement.
Key Features
- Heated oxygen sensor for faster operating response
- Specific-fit design for direct replacement
- 4-wire configuration with male connector
- Threaded mounting type for OE-style installation
- 9.84-inch wiring harness length
- 0.708-inch thread diameter
OE-Style Design and Denso Construction
Denso’s OE Style line is built to match original equipment fit and function, with precision manufacturing for accurate replacement on the first installation. The sensor uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management, fuel efficiency, and long service life. Part number 234-4211 is a direct replacement choice for drivers servicing upstream oxygen sensor locations on Lexus SC400 and Lexus LS400 vehicles.
This part cross-references Bosch 13470 and Toyota 8946524050 for the same application.
What This Oxygen Sensor Helps Address
- Check engine light caused by oxygen sensor fault codes
- Incorrect air-fuel ratio readings from a worn upstream sensor
- Reduced fuel economy from slow or inaccurate sensor response
- Rough idle or drivability issues tied to exhaust feedback errors
- Failed emissions testing related to sensor performance
Installation Notes and Fitment
Fits 1992-1995 Lexus SC400, Upstream. Fits 1990-1994 Lexus LS400, Upstream. Confirm connector style, thread diameter, and harness length before installation. Use the threaded mounting point and specific-fit configuration to match the original sensor location. Part number 234-4211 is intended for upstream placement only on the listed Lexus applications.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for consistent fit and performance. The OE Style design supports first-time fitment on the listed Lexus applications, including Lexus SC400 and Lexus LS400 upstream sensor positions.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1995 | Lexus | SC400 | Upstream | OE Style |
| 1994 | Lexus | LS400 | Upstream | OE Style |
| 1994 | Lexus | SC400 | Upstream | OE Style |
| 1993 | Lexus | LS400 | Upstream | OE Style |
| 1993 | Lexus | SC400 | Upstream | OE Style |
| 1992 | Lexus | LS400 | Upstream | OE Style |
| 1992 | Lexus | SC400 | Upstream | OE Style |
| 1991 | Lexus | LS400 | Upstream | OE Style |
| 1990 | Lexus | LS400 | Upstream | OE Style |
| No rows match your filter. | ||||