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NTK 24525 Oxygen Sensor - Upstream Left or Upstream Right
Overview of NTK Direct Fit Oxygen Sensor 24525
The NTK Direct Fit Oxygen Sensor 24525 is designed specifically for select INFINITI and Nissan models, including the I30, J30, and Maxima. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance by providing precise air-fuel mixture data.
- Heated sensor type for faster response times
- Specific fit for INFINITI I30, J30 and Nissan Maxima
- Threaded mounting type with 18mm thread diameter
- 29.75-inch wiring harness length for direct installation
- Three-wire configuration for reliable signal transmission
About the NTK Direct Fit Oxygen Sensor Product Line
The Direct Fit Oxygen Sensor line by NTK is engineered to provide exact replacement sensors tailored to specific vehicle applications. This product line focuses on delivering sensors with precise wiring harness lengths, thread sizes, and mounting types to match original equipment specifications. The 24525 sensor exemplifies this approach by offering a direct fit solution for INFINITI and Nissan models, reducing installation time and ensuring compatibility.
Detailed Product Description
The NTK 24525 oxygen sensor features a heated sensor element that accelerates the sensor’s readiness after engine start, improving emissions control and fuel efficiency. Its 29.75-inch wiring harness length allows for a direct connection without the need for extensions or modifications. The sensor’s threaded mounting type with an 18mm diameter ensures secure installation in the exhaust system. With three wires, this sensor supports both the heating element and signal output, maintaining accurate oxygen level readings for the engine control unit.
Common Applications and Issues Addressed
- Restores proper air-fuel ratio monitoring in INFINITI I30, J30, and Nissan Maxima
- Resolves check engine light triggers related to oxygen sensor faults
- Improves fuel economy by providing accurate emissions data
- Reduces exhaust emissions by enabling precise engine adjustments
- Eliminates rough idling or engine hesitation caused by faulty sensors
Installation Notes and Tips
- Ensure vehicle compatibility with INFINITI I30, J30, or Nissan Maxima before installation
- Use appropriate tools for removing the old sensor to avoid damage to the exhaust manifold
- Verify the 18mm threaded mounting fits securely without cross-threading
- Check wiring harness length of 29.75 inches to confirm proper routing and connection
- Follow vehicle manufacturer torque specifications when installing the sensor
Quality Assurance and Warranty
NTK oxygen sensors are manufactured to meet or exceed OEM standards for durability and performance. The Direct Fit Oxygen Sensor 24525 undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, NTK typically offers coverage against defects in materials and workmanship to support long-term use.
| Brand | NTK |
| Part Number | 24525 |
| Position | Direct Fit Oxygen Sensor, Upstream Left |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 18.000 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 3 |
| Wiring Harness Length | 29.7500 |
This part fits 21 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1999 | INFINITI | I30 | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1999 | INFINITI | I30 | 3.0L | V6 | Upstream Left | B2S1 Federal Emissions OE Equivalent Design Oxygen Sensor; Direct Fit Oxygen Sensor |
| 1999 | Nissan | Maxima | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1999 | Nissan | Maxima | 3.0L | V6 | Upstream Left | B2S1 Federal Emissions OE Equivalent Design Oxygen Sensor; Direct Fit Oxygen Sensor |
| 1998 | INFINITI | I30 | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1998 | INFINITI | I30 | 3.0L | V6 | Upstream Left | Compatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit Oxygen Sensor |
| 1998 | Nissan | Maxima | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1998 | Nissan | Maxima | 3.0L | V6 | Upstream Left | B2S1; To 6/98; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1998 | Nissan | Maxima | 3.0L | V6 | Upstream Left | B2S1; From 6/98; Federal Emissions; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1997 | INFINITI | I30 | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1997 | INFINITI | I30 | 3.0L | V6 | Upstream Left | Compatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit Oxygen Sensor |
| 1997 | INFINITI | J30 | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1997 | Nissan | Maxima | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1997 | Nissan | Maxima | 3.0L | V6 | Upstream Left | Compatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit Oxygen Sensor |
| 1996 | INFINITI | I30 | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1996 | INFINITI | I30 | 3.0L | V6 | Upstream Left | Compatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit Oxygen Sensor |
| 1996 | INFINITI | J30 | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1996 | Nissan | Maxima | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1996 | Nissan | Maxima | 3.0L | V6 | Upstream Left | Compatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit Oxygen Sensor |
| 1995 | Nissan | Maxima | 3.0L | V6 | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1995 | Nissan | Maxima | 3.0L | V6 | Upstream Left | Compatible with downstream oxygen sensor designed to meet OE specifications.; 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.