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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, 16.5″ Long, Heated, Direct Fit
O2 Sensor
| Brand |
NTK Oxygen Sensors |
|---|---|
| Part Number (MPN) |
21546 |
| SKU |
21546 |
| UPC / GTIN |
087295215463 / 00087295215463 |
| Condition |
New |
| Position |
Upstream Left, Upstream Right, Downstream Left, Downstream Right, Upstream Front, Upstream Rear, Upstream |
| Disclaimer |
WARNING/Precaución: Cancer and Reproductive Harm – Cáncer y daño al sistema reproductivo – |
| Connector Gender |
Female |
| Connector Shape |
Square |
| 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 |
00087295215463 |
| Wire Quantity |
4 |
| Wiring Harness Length |
17.25 |
| Wrench Size |
7/8″ (22mm) |
| Year |
2009 |
| Make |
Buick |
| Model |
LaCrosse |
| Body & Trim |
CX |
| Engine & Transmission |
3.8L V6 – Gas |
| ACDelco |
213-1530, 213-1568, 213-1615, 213-1687, 213-1693, 213-1699, 213-1702, 213-2827, 213-3237, 213-3528, 213-3541, 213-3628, 213-3866, 213-4157, 213-4195, 213-4403, 2131688, 213-3919 |
| Airtex |
5S4402 |
| BWD |
OS1656, OS2239, OS2240, OS2249 |
| BorgWarner |
OS1656, OS2239, OS2240, OS2249, OS2462, OS2470, OS2692, OS2694 |
| Bosch |
13779, 13786, 15133, 15135, 15152, 15155, 15156, 15161, 15200, 15201, 15284, 15548, 15564, 13735 |
| Carquest |
75-2539, 75-3032, 75-3047, 75-3384, 75-3387, 75-3686, 75-3702, 75-3705, 75-3706, 75-3872, 75-3873 |
| DELPHI |
ES20007, ES20013 |
Vehicle Fitment
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