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NTK 24440 Oxygen Sensor - Downstream Rear
| Brand | NTK 24440 |
|---|---|
| Position | Downstream Rear |
| Wiring Harness Length | 21.5000 |
| Sensor Type | Heated |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Thread Diameter | 18.000 |
| Mounting Type | Threaded |
| Product line | Direct Fit Oxygen Sensor |
| Fits | Acura · 4 vehicles |
Direct fit design. Application-specific replacement for straightforward sensor service.
Heated sensor. Built for faster operating response and stable exhaust feedback.
OE-level testing. Manufactured to meet or exceed original equipment specifications.
Cross-references Baldwin 18031, DENSO Auto Parts 234-4351 and 36542RKGA01 for the same application. See all 3.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Direct Fit Oxygen Sensor
NTK Oxygen Sensor 24440 is a specific-fit, heated sensor built for emission control applications. It is engineered with a threaded mounting design and a 4-wire configuration for reliable signal delivery and OE-style fitment.
Key Features
- Heated oxygen sensor for faster operating response
- Specific-fit design for direct replacement use
- Threaded mounting type for secure installation
- 4-wire construction for signal and heater circuit operation
- 18 mm thread diameter and 21.5 in. wiring harness length
Detailed Description
NTK 24440 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific coverage and OE-style fit, form, and function. As an oxygen sensor for the Acura RL, this unit is built to match the original configuration used in 2009-2012 models with downstream rear placement. NTK draws on its role as a major OE oxygen sensor supplier and uses manufacturing controls that emphasize consistency and reliability. Part number 24440 is a practical replacement choice when restoring proper exhaust feedback and emissions system performance.
This part cross-references DENSO Auto Parts 234-4351 and Baldwin 18031 for the same application.
What It Is Used For
- Replacing a worn or slow-responding oxygen sensor
- Restoring accurate exhaust gas feedback to the engine control system
- Addressing emissions-related fault codes tied to sensor performance
- Correcting drivability issues caused by incorrect air-fuel feedback
- Maintaining proper emissions system operation on the Acura RL
Installation Notes and Tips
Fits 2009-2012 Acura RL, downstream rear. Verify connector style, thread size, and harness routing before installation. The threaded mounting design supports a direct-fit replacement process, and the 21.5-inch harness length should be checked against the original sensor layout. Part number 24440 should be matched to the vehicle’s original sensor location and configuration before service.
Quality Assurance
NTK tests these oxygen sensors during manufacturing to meet or exceed OE specifications. The brand’s OE-supplier background and ceramic manufacturing expertise support consistent fit and function across the application range for part number 24440.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2012 | Acura | RL | 3.7L | V6 | Downstream Rear | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
| 2011 | Acura | RL | 3.7L | V6 | Downstream Rear | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
| 2010 | Acura | RL | 3.7L | V6 | Downstream Rear | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
| 2009 | Acura | RL | 3.7L | V6 | Downstream Rear | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
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