My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

NGK 21546 Oxygen Sensor O2 Sensor 4-Wire Heated Narrow Band 18mm

(Chevrolet Silverado 1500 2003-05, 2007-11, Suburban 1500 2003-05, 2008-11, Corvette 2004, Silverado 2500 HD 2007-11, Tahoe 2003-05, 2008-11 + 55 more models)

Manufacturer

Picture for manufacturer NGK Spark Plugs

Part Number

21546
4 reviews
Sale Price

$49.99

In Stock (10+)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The NGK 21546 oxygen sensor (also called an O2 sensor or lambda sensor) is an NTK-built, OE-type replacement. It monitors the oxygen content of the exhaust so the engine computer can keep the air-fuel mixture correct. A fresh sensor can help lower emissions, improve fuel economy and extend catalytic converter life.

Key Features:

  • Heated, narrow-band (0-1 V) zirconia sensing element
  • 4-wire design with a pin-type terminal and OE-style connector
  • Screw-on mounting with an 18 x 1.5 mm thread
  • Wire length of about 16.5 in. (420 mm)
  • Wiring harness included
  • Ceramic heater for fast light-off and quick response
  • Dual-coated platinum element interface
  • 3-stage contaminant-resistant overcoat protects the element against poisoning
  • Water-resistant connector helps guard against moisture-related failures
  • Vibration and thermal shock tested during development
  • Meets or exceeds emission standards

Oxygen sensor bung not included. The part is backed by a limited 1-year warranty.

Products specifications

Fits

Chevrolet Silverado 1500 2003-05, 2007-11, Suburban 1500 2003-05, 2008-11, Corvette 2004, Silverado 2500 HD 2007-11, Tahoe 2003-05, 2008-11, Impala 2006-11, Malibu 2004-11, Equinox 2005-09, Trailblazer 2005, Monte Carlo 2006-07 + 50 more models

Not completely sure of product description

Excellent, enough information

3/13/2012<br>Order #6330 (3/12/3012)<br>Autoplicity had the cheapest price on the web for the Thule Raceway 3 Bike Rack...great customer service and speedy delivery.<br>Thanks...Mike P. NY

I searched everywhere. Autoplicity has the best price.

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy