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NTK 27041 Air / Fuel Ratio Sensor - Upstream Rear
| Brand | NTK 27041 |
|---|---|
| Position | Upstream Rear |
| Wiring Harness Length | 10.63 |
| Sensor Type | Heated |
| Thread Length | 0.38 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 5 |
| Thread Diameter | 18.000 |
| Mounting Bracket Included | No |
| Product line | Direct Fit 5-Wire A/F Sensor |
| Fits | Acura · 5 vehicles |
Direct-fit design. Application-specific replacement sensor for OE-style fit and function.
Heated 5-wire sensor. Built for fast response and precise exhaust feedback.
OE-spec testing. Extensively tested during manufacturing to meet or exceed OE requirements.
Cross-references 36541R9SJ01 for the same application. See all 1.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Overview
NTK 27041 is a direct-fit air/fuel ratio sensor built for specific applications that require a heated, 5-wire design. It is engineered for accurate exhaust feedback and OE-style fit, form, and function.
Key Features
- Direct-fit air/fuel ratio sensor for specific applications
- Heated sensor design for faster operating response
- 5-wire configuration for precise signal delivery
- 18.000 mm thread diameter with 0.38 thread length
- 10.63 wiring harness length for application-specific routing
- No mounting bracket included
Detailed Description
NTK 27041 is part of the Direct Fit 5-Wire A/F Sensor line, a product line focused on application-specific replacement sensors with OE-style fit and function. As an air/fuel ratio sensor, it monitors exhaust oxygen content so the engine control system can maintain the proper mixture for drivability and emissions control. This part cross-references Honda 36541R9SJ01 for the same application. Fits 2016-2020 Acura RLX, upstream rear. Fits 2016-2020 Acura RLX, upstream rear, Bank 1 Sensor 1 oxygen sensor. For Acura RLX service work, NTK 27041 provides the correct heated 5-wire configuration for the listed application.
Common Uses
- Replacing a failed sensor that triggers mixture-related fault codes
- Restoring accurate exhaust feedback for fuel control
- Addressing rough idle, poor fuel economy, or emissions concerns tied to sensor output
- Correcting drivability issues caused by slow or inaccurate sensor response
Installation Notes
Verify connector style, wire count, thread size, and harness length before installation. This sensor uses a specific-fit design, so match the application details to the vehicle service information before replacement. The mounting bracket is not included.
Quality Assurance
NTK states that its oxygen sensors are extensively tested during manufacturing and built to meet or exceed OE specifications. The brand also draws on OE-supplier experience and ceramic manufacturing expertise to support fit, form, and function.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2020 | Acura | RLX | 3.5L | V6 | GAS | Upstream Rear | Bank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor |
| 2019 | Acura | RLX | 3.5L | V6 | GAS | Upstream Rear | Bank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor |
| 2018 | Acura | RLX | 3.5L | V6 | GAS | Upstream Rear | Bank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor |
| 2017 | Acura | RLX | 3.5L | V6 | GAS | Upstream Rear | Bank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor |
| 2016 | Acura | RLX | 3.5L | V6 | GAS | Upstream Rear | Bank 1 Sensor 1 Oxygen Sensor; Direct Fit 5-Wire A/F Sensor |
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