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NTK 24598 Oxygen Sensor - Downstream
Overview of NTK Direct Fit Oxygen Sensor 24598
The NTK Direct Fit Oxygen Sensor 24598 is designed specifically for Subaru vehicles including the Baja, Legacy, and Outback models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the engine management system.
- Heated oxygen sensor for faster response times
- Specific fit for Subaru Baja, Legacy, and Outback
- 17.5-inch wiring harness length for easy installation
- Threaded mounting type with 18mm thread diameter
- Four-wire design for reliable signal transmission
Direct Fit Oxygen Sensor Product Line Details
The NTK Direct Fit Oxygen Sensor line is engineered to provide exact replacement sensors that match OEM specifications. This product line focuses on direct compatibility, eliminating the need for modifications or additional adapters. The 24598 sensor maintains the integrity of the vehicle’s emission system by fitting precisely and functioning reliably within Subaru’s emission control framework.
Detailed Product Description
The NTK 24598 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions sooner after engine start. Its four-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The 17.5-inch wiring harness length provides sufficient reach for straightforward installation without excess slack. The threaded mounting type with an 18mm diameter ensures a secure and leak-free fit in the exhaust system of Subaru Baja, Legacy, and Outback models.
Common Applications and Issues Addressed
- Restores accurate air-fuel ratio readings for improved engine performance
- Helps resolve check engine light triggers related to oxygen sensor faults
- Reduces emissions by ensuring proper catalytic converter function
- Improves fuel economy by providing precise sensor data
- Eliminates rough idling or hesitation caused by faulty oxygen sensors
Installation Notes and Tips
- Compatible specifically with Subaru Baja, Legacy, and Outback models—verify vehicle year and engine type before installation
- Use appropriate tools to avoid damaging the 18mm threaded sensor during removal or installation
- Ensure wiring harness is routed away from hot exhaust components to prevent damage
- Apply anti-seize compound on threads if recommended by vehicle manufacturer
- Check for proper sensor connector engagement to avoid signal interruptions
Quality Assurance and Warranty
NTK oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The Direct Fit Oxygen Sensor 24598 undergoes rigorous testing to ensure durability and reliable performance in Subaru emission systems. Warranty coverage details should be confirmed with the product documentation or supplier.
| Brand | NTK |
| Part Number | 24598 |
| Position | Direct Fit Oxygen Sensor, Downstream |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 18.000 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 17.5000 |
This part fits 16 vehicles. Search below:
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2006 | Subaru | Baja | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor | |
| 2005 | Subaru | Baja | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor | |
| 2004 | Subaru | Baja | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor | |
| 2004 | Subaru | Legacy | 2.5L | H4 | Downstream | B1S2, Federal Emissions, OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 2004 | Subaru | Outback | 2.5L | H4 | Downstream | B1S2, Federal Emissions, OE Equivalent Design; Direct Fit Oxygen Sensor | |
| 2003 | Subaru | Baja | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor | |
| 2003 | Subaru | Legacy | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor | |
| 2003 | Subaru | Outback | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor | |
| 2002 | Subaru | Legacy | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor | |
| 2002 | Subaru | Outback | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor | |
| 2001 | Subaru | Legacy | Automatic | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2001 | Subaru | Outback | Automatic | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2000 | Subaru | Legacy | Automatic | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 2000 | Subaru | Outback | Automatic | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor |
| 1999 | Subaru | Legacy | 2.5L | H4 | Downstream | Downstream oxygen sensor with original equipment equivalent design; Direct Fit Oxygen Sensor | |
| 1999 | Subaru | Legacy | 2.2L | H4 | Downstream | B1S2, Federal Emissions, 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.