21548 - NTK Oxygen (O2) Sensor


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Part #: 21548
Notes: OE Type Oxygen Sensor
MSRP: $216.51
Your Price: $73.68

Specs

Mounting Type Threaded
Sensor Type Heated
Thread Diameter 18.000
Universal Or Specific Fit Specific
Wire Harness Length 22.7500
Wire Quantity 4

All Fitments

CADILLAC
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2003 - 2003 ESCALADE ALL V8 6.0 ALL ALL ALL Position: Downstream Left; Calif. Emissions; Sport Utility;
2003 - 2003 ESCALADE ESV ALL V8 6.0 ALL ALL ALL Position: Downstream Left; Calif. Emissions; Sport Utility;
2004 - 2006 ESCALADE ESV ALL V8 6.0 ALL ALL ALL Position: Downstream Left; Sport Utility;
CHEVROLET
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2002 - 2006 SILVERADO 1500 HD ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2007 - 2007 SILVERADO 1500 HD CLASSIC ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2002 - 2004 SILVERADO 2500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2002 - 2006 SILVERADO 2500 HD ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2007 - 2007 SILVERADO 2500 HD ALL V8 6.0 ALL ALL ALL Position: Downstream Left; Cab & Chassis;
2007 - 2007 SILVERADO 2500 HD CLASSIC ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2002 - 2006 SILVERADO 3500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2007 - 2007 SILVERADO 3500 CLASSIC ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2007 - 2007 SILVERADO 3500 HD ALL V8 6.0 ALL ALL ALL Position: Downstream Left; Cab & Chassis;
2002 - 2006 SUBURBAN 2500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2003 - 2003 SUBURBAN 2500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left; Calif. Emissions
GMC
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2002 - 2002 SIERRA 1500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2002 - 2006 SIERRA 1500 HD ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2007 - 2007 SIERRA 1500 HD CLASSIC ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2002 - 2004 SIERRA 2500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2002 - 2006 SIERRA 2500 HD ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2007 - 2007 SIERRA 2500 HD ALL V8 6.0 ALL ALL ALL Position: Downstream Left; Cab & Chassis;
2007 - 2007 SIERRA 2500 HD CLASSIC ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2002 - 2006 SIERRA 3500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2007 - 2007 SIERRA 3500 CLASSIC ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2007 - 2007 SIERRA 3500 HD ALL V8 6.0 ALL ALL ALL Position: Downstream Left; Cab & Chassis;
2002 - 2006 YUKON XL 1500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2003 - 2003 YUKON XL 1500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left; Calif. Emissions
2002 - 2006 YUKON XL 2500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left
2003 - 2003 YUKON XL 2500 ALL V8 6.0 ALL ALL ALL Position: Downstream Left; Calif. Emissions
PONTIAC
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2007 - 2007 G6 ALL V6 3.6 ALL ALL ALL Position: Downstream Right
2007 - 2007 G6 ALL V6 3.9 ALL ALL ALL Position: Downstream Right; Standard Trans;
SATURN
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2007 - 2007 AURA ALL V6 3.6 ALL ALL ALL Position: Downstream Right

Product Description

Oxygen (O2) Sensors are used in modern automobiles to control the fuel and ignition systems to optimize a car’s performance in the areas of emissions and fuel economy. Sensors are located before and after the catalytic converter to check on the amount of oxygen in the exhaust. The sensor sends signals to the car’s on-board computer, which then can adjust several variables, including air/fuel ratio and timing, in order to bring the engine into the optimum operating range.

Each NTK Oxygen (O2) Sensor is:

  • Extensively Tested During Manufacture to Guarantee Quality and Reliability
  • Supplied With a Factory-Fitted OEM Connector for Easy Installation
  • Precision manufactured with a sensing element incorporating NTK’s premier technical ceramics

Oxygen (O2) Sensors should be tested at each tune-up. Failed or worn out oxygen sensors can cause:

  • Failed Emission Tests
  • Increased Fuel Consumption
  • Failed Catalytic Converters
  • Poor Driveability
  • Increased Emissions

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