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NTK 24549 Oxygen Sensor - Downstream or Upstream
Overview of NTK Direct Fit Oxygen Sensor 24549
The NTK Direct Fit Oxygen Sensor 24549 is designed specifically for select Lexus and Toyota models, including the GS300, Highlander, and RAV4. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.
- Heated oxygen sensor for faster warm-up and improved efficiency
- Specific fit for Lexus GS300, Toyota Highlander, and Toyota RAV4
- 29.5-inch wiring harness length for convenient installation
- Threaded mounting type with 18mm thread diameter
- Four-wire configuration for reliable signal transmission
Details on the Direct Fit Oxygen Sensor Product Line
The NTK Direct Fit Oxygen Sensor line is engineered to provide exact replacement sensors tailored to specific vehicle applications. This product line focuses on delivering sensors that match OEM specifications, ensuring compatibility and performance without the need for modifications. The 24549 sensor maintains the integrity of the original emission control system for the Lexus GS300 and Toyota models it supports.
Technical Description and Features
This oxygen sensor features a heated design, which allows it to reach operating temperature quickly, reducing emissions during cold starts. The 29.5-inch wiring harness length offers flexibility during installation, while the four-wire setup supports both the sensor signal and heater circuit. The threaded mounting type with an 18mm diameter ensures a secure and proper fit in the exhaust system. Being a specific fit sensor, it is engineered to match the exact requirements of the Lexus GS300, Toyota Highlander, and Toyota RAV4 models, providing reliable data for engine control units.
Common Applications and Issues Addressed
- Replacement for faulty or failing oxygen sensors in Lexus GS300, Toyota Highlander, and RAV4
- Helps resolve engine performance issues related to incorrect air-fuel mixture
- Reduces emissions by ensuring accurate oxygen level readings
- Addresses check engine light triggers related to oxygen sensor faults
- Improves fuel efficiency by maintaining proper combustion control
Installation Notes and Tips
When installing the NTK Direct Fit Oxygen Sensor 24549, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. The 29.5-inch harness length provides sufficient reach for most installation scenarios. Confirm the sensor’s threaded mounting matches the exhaust port and torque to manufacturer specifications. Verify electrical connections are secure to maintain sensor functionality.
Quality Assurance and Warranty
NTK oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The Direct Fit Oxygen Sensor 24549 undergoes rigorous testing to ensure durability and accurate performance. While specific warranty details are not provided here, NTK typically offers coverage against defects in materials and workmanship. Refer to the product packaging or NTK documentation for exact warranty terms.
| Brand | NTK |
| Part Number | 24549 |
| Position | Direct Fit Oxygen Sensor, Upstream |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 18.000 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 29.5000 |
This part fits 20 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Lexus | GS300 | 3.0L | L6 | Upstream | Cylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2004 | Lexus | GS300 | 3.0L | L6 | Upstream | Cylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2003 | Lexus | GS300 | 3.0L | L6 | Upstream | Cylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2003 | Toyota | Highlander | 2.4L | L4 | Downstream | Cyls. 1 & 4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2003 | Toyota | Highlander | 2.4L | L4 | Downstream | Cyls. 2 & 3; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2003 | Toyota | RAV4 | 2.0L | L4 | Downstream | Cyls. 2 & 3; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2003 | Toyota | RAV4 | 2.0L | L4 | Downstream | Cyls. 1 & 4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2002 | Lexus | GS300 | 3.0L | L6 | Upstream | Cylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2002 | Toyota | Highlander | 2.4L | L4 | Downstream | Cyls. 2 & 3; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2002 | Toyota | Highlander | 2.4L | L4 | Downstream | Cyls. 1 & 4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2002 | Toyota | RAV4 | 2.0L | L4 | Downstream | Cyls. 2 & 3; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2002 | Toyota | RAV4 | 2.0L | L4 | Downstream | Cyls. 1 & 4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2001 | Lexus | GS300 | 3.0L | L6 | Upstream | Cylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2001 | Toyota | Highlander | 2.4L | L4 | Downstream | Cyls. 2 & 3; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2001 | Toyota | Highlander | 2.4L | L4 | Downstream | Cyls. 1 & 4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2001 | Toyota | RAV4 | 2.0L | L4 | Downstream | Cyls. 2 & 3; B2S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2001 | Toyota | RAV4 | 2.0L | L4 | Downstream | Cyls. 1 & 4; B1S2; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2000 | Lexus | GS300 | 3.0L | L6 | Upstream | Cylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1999 | Lexus | GS300 | 3.0L | L6 | Upstream | Cylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1998 | Lexus | GS300 | 3.0L | L6 | Upstream | Cylinders 1-3, Bank 1 Sensor 1, OE Equivalent Design; Direct Fit Oxygen Sensor |
* 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.