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NGK 21543 NTK Oxygen Sensor - Heated 4-Wire Narrow-Band O2 Sensor

(Chevrolet Suburban 1500 2000, Tahoe 1996-99, C1500 1996-99, K1500 1996-99, K2500 1996-2000, Express 3500 1996-2002, Express 2500 1996-2002 + 28 more models)

Manufacturer

Picture for manufacturer NGK Spark Plugs

Part Number

21543
7 reviews
Sale Price

$40.21

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The NGK NTK 21543 oxygen sensor (also called an O2 sensor or lambda sensor) is an OE-identical replacement. It monitors exhaust gas oxygen and sends feedback to the engine control unit (ECU). The ECU uses that signal to regulate the air-fuel ratio, which supports fuel economy, engine performance and lower emissions. It also helps the on-board diagnostic system detect fuel delivery or catalytic converter problems.

Key Features:

  • Heated, narrow-band switching zirconia sensor design
  • 4-wire configuration with blade-type terminals and an oval, male OE-style connector
  • Threaded mounting with an M18 x 1.5 thread and a 7/8" (22 mm) hex
  • Dual-coated platinum interface and a thinner ceramic element for fast light-off and response
  • 3-stage contaminant-resistant plasma jet and deposit trap overcoat to protect the sensing element from poisoning
  • OE-specified water-resistant connector and harness hardware for straightforward installation
  • Tested during development and manufacturing, including vibration and thermal shock testing

NTK is the world's largest supplier of original equipment oxygen sensors. This sensor is built to meet or exceed OEM specifications for fit, form and function.

Cross-references: Bosch 13027, Delphi ES10008, ES10084, ES20028, DENSO 234-4019, ACDelco AFS93, AFS136, BWD OS822, OS1074, Spectra Premium OS5049, CARQUEST 75-1733.

Products specifications

Fits

Chevrolet Suburban 1500 2000, Tahoe 1996-99, C1500 1996-99, K1500 1996-99, K2500 1996-2000, Express 3500 1996-2002, Express 2500 1996-2002, C3500 1996-2000, Silverado 2500 1999-2000, Suburban 2500 2000, C2500 1996-2000 + 24 more models

Perfect transaction. Perfectly satisfied. Best price anywhere, same-day shipping. Couldn't be happier. Thanks Autoplicity.

Best prices, fast shipping, good service. Thank you!

Was looking online for the best price on a part and found that autoplicity had the lowest price and free shipping on it. I ordered it and it was shipped the next day along with tracking number. I will be ordering a few more parts from autoplicity. Order Number: 27769

The cheapest price on the net and very fast shipping. I received my items in 3 days and they were delivered on a Saturday to make things even better. <br><br>Will be using these guys again real soon.

I have placed orders with Autoplicity 3 times in the last 2 months, and have received excellent delivery, pricing and customer service in every instance. Thanks!

I ordered a Flowmaster cat back system for my 2012 F-150. The order arrived the day they said it would and the product came at a fair price. Well done.

** Update 4/18/2012<br>Everything arrived in several different shipments. I did experience a problem with some FelPro Headbolts that I had ordered. I ordered two and only received one, but after a short phone call with Paul from shipping, the problem was fixed and my second set of bolts were shipped.<br><br>They had the cheapest price that I could find on several products. I did not like the order confirmations on there website as I had to copy and paste to search for my tracking number. I am supposed to receive my order today and I am scared because the two weights do not match up. Autoplicity says 37.7 pounds and fedex says 3.8 pounds. Maybe there is more than one tracking number and I just do not know.

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