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NTK 24573 Oxygen Sensor - Downstream Front, Downstream Left or Downstream Right
Overview of NTK Direct Fit Oxygen Sensor 24573
The NTK Direct Fit Oxygen Sensor 24573 is designed specifically for select INFINITI and Nissan models, including the I35, Maxima, Pathfinder, QX4, and Sentra. 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 sensor type for faster response times
- Specific fit for INFINITI and Nissan vehicles
- 35.5-inch wiring harness length for easy 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 direct compatibility, eliminating the need for modifications during installation. The 24573 sensor maintains factory specifications, ensuring proper fit and function for the supported INFINITI and Nissan models.
Technical Description and Features
This oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving emission control efficiency shortly after engine start. The 35.5-inch wiring harness length offers flexibility during installation, while the four-wire design supports both the sensor signal and heater circuit. The threaded mounting type with an 18mm diameter matches OEM standards, ensuring secure and leak-free installation.
Common Applications and Issues Addressed
- Helps maintain optimal air-fuel ratio for efficient combustion
- Reduces harmful emissions by providing accurate oxygen level data
- Prevents engine performance issues related to faulty sensors
- Resolves check engine light triggers caused by oxygen sensor faults
- Improves fuel economy by enabling precise engine adjustments
Installation Notes and Tips
When installing the NTK 24573 oxygen sensor, ensure the vehicle is cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the wiring harness length and connector match the vehicle’s specifications before installation. Thread the sensor by hand initially to prevent cross-threading, then tighten to the manufacturer’s torque specifications.
Quality Assurance and Warranty
NTK oxygen sensors undergo rigorous testing to meet OEM standards for durability and performance. The Direct Fit Oxygen Sensor 24573 is manufactured to provide reliable operation under normal driving conditions. Please refer to NTK’s warranty policy for specific coverage details.
| Brand | NTK |
| Part Number | 24573 |
| Position | Direct Fit Oxygen Sensor, Downstream Left |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 18.000 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 35.5000 |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | INFINITI | I35 | 3.5L | V6 | Downstream Left | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
| 2003 | INFINITI | I35 | 3.5L | V6 | Downstream Left | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
| 2003 | INFINITI | QX4 | 3.5L | V6 | Downstream Right | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2003 | Nissan | Maxima | 3.5L | V6 | Downstream Front | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
| 2002 | INFINITI | I35 | 3.5L | V6 | Downstream Left | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
| 2002 | INFINITI | QX4 | 3.5L | V6 | Downstream Right | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2002 | Nissan | Maxima | 3.5L | V6 | Downstream Front | Oxygen Sensor B2S2 placement designed to OE specifications.; Direct Fit Oxygen Sensor |
| 2002 | Nissan | Pathfinder | 3.5L | V6 | Downstream Right | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2002 | Nissan | Sentra | 1.8L | L4 | Downstream Right | B2S2; Exc. Clean Air Vehicle; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2001 | INFINITI | QX4 | 3.5L | V6 | Downstream Right | B1S2; 2001.5 Model Year; From 8/2/00; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2001 | Nissan | Pathfinder | 3.5L | V6 | Downstream Right | B1S2; 2001.5 Model Year; From 8/2/00; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 2001 | Nissan | Sentra | 1.8L | L4 | Downstream Right | B2S2; Exc. Clean Air Vehicle; Green Connector; 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.