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NTK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, NTK uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.
NTK OE Type Oxygen Sensor
Switching Oxygen Sensor: 4 Wire, 41.25″ Long, Heated, Direct Fit
O2 Sensor
| Brand |
NTK Oxygen Sensors |
|---|---|
| Part Number (MPN) |
21531 |
| SKU |
21531 |
| UPC / GTIN |
087295215319 / 00087295215319 |
| Condition |
New |
| Position |
Downstream, Downstream Left |
| Disclaimer |
WARNING/Precaución: Cancer and Reproductive Harm – Cáncer y daño al sistema reproductivo – |
| Connector Gender |
Female |
| Connector Shape |
Rectangular |
| Grade Type |
Standard Replacement |
| Heated |
Yes |
| Hex Size |
7/8″ (22mm) |
| Mounting Type |
Threaded |
| PADB ID 557 |
18.00 |
| Sensor Type |
Narrow-Band |
| Technology |
Switching Zirconia Type |
| Terminal Gender |
Male |
| Terminal Quantity |
4 |
| Terminal Type |
Blade |
| Thread Size |
M18.0 x 1.5 |
| UPC |
00087295215319 |
| Wire Quantity |
4 |
| Wiring Harness Length |
41.25 |
| Wrench Size |
7/8″ (22mm) |
| Year |
2011 |
| Make |
Saab |
| Model |
9-3 |
| Body & Trim |
Aero |
| Engine & Transmission |
2.0L L4 – Gas |
| ACDelco |
213-3010, 213-3086, 213-3897 |
| Airtex |
5S10088, 5S3894, 5S3907, 5S4279, 5S6297, 5S9955 |
| BWD |
OS1827, OS1844, OS2359 |
| Beck Arnley |
156-4403 |
| BorgWarner |
OS1827, OS1844, OS2359, OS2361 |
| Bosch |
16064, 16175, 16200, 16447, 16624, 16146 |
| Carquest |
75-2714, 75-2729, 75-2735, 75-3554 |
Vehicle Fitment
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