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NTK 24678 Oxygen Sensor - Intermediate or Upstream
| Brand | NTK 24678 |
|---|---|
| Position | Upstream and Intermediate |
| Wiring Harness Length | 32.0000 |
| 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 | Mazda · 4 vehicles |
Direct fit design. Application-specific replacement for streamlined service and OE-style fit.
Heated sensor. Built for faster operating response in emission-control systems.
OE-focused engineering. NTK applies original equipment sensor expertise and extensive testing.
Cross-references BBB Industries 13962, Continental 13621 and DENSO Auto Parts 234-4147 for the same application. See all 11.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Direct Fit Oxygen Sensor
NTK 24678 is a direct fit heated oxygen sensor built for specific emission-control applications. It uses a threaded mounting design, a 4-wire configuration, and a 32-inch harness length for a precise replacement setup.
Compatible With Mazda 6 and Mazda MPV applications, this NTK oxygen sensor is engineered for accurate signal response and OE-style fitment. The NTK 24678 part number is backed by the brand’s focus on original equipment sensor technology.
Key Features
- Heated oxygen sensor for faster operating response
- Specific-fit design for direct replacement applications
- Threaded mounting type for secure installation
- 4-wire configuration with 32-inch wiring harness length
- 18 mm thread diameter for listed applications
Detailed Description
NTK 24678 is part of the Direct Fit Oxygen Sensor line, which focuses on OE-style replacement sensors with application-specific fitment. NTK is known for original equipment oxygen sensor manufacturing, and this part reflects that approach with a direct fit design, heated sensing element, and threaded installation style. The 24678 part number is used for emission-control service where accurate exhaust feedback is required.
This part cross-references Continental 13621 and DENSO Auto Parts 234-4147 for the same application. Fits 2005 Mazda 6, intermediate. Fits 1996-1998 Mazda MPV, upstream.
What It Is Used For
- Replacing a worn oxygen sensor that can trigger emissions faults
- Restoring exhaust feedback for fuel-control operation
- Addressing sensor response issues in heated oxygen sensor circuits
- Correcting direct-fit service needs on listed Mazda applications
Installation Notes and Tips
Verify the connector style, harness length, thread diameter, and sensor position before installation. Use the vehicle’s listed fitment notes to confirm the correct bank and sensor location. The threaded design supports a straightforward replacement on the specified applications.
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 original equipment sensor manufacturing experience and ceramic technology used from raw material through finished product.
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2005 | Mazda | 6 | Automatic | 2.3L | L4 | Intermediate | Center Sensor; Located After Primary Catalyst; B1S2; Calif. Emissions; OE Equivalent Design; Direct Fit Oxygen Sensor |
| 1998 | Mazda | MPV | — | 3.0L | V6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1997 | Mazda | MPV | — | 3.0L | V6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
| 1996 | Mazda | MPV | — | 3.0L | V6 | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit Oxygen Sensor |
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