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NGK Spark Plugs 21539

NTK Oxygen Sensor

NGK Spark Plugs 21539
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Product images may differ from actual product appearance.

739-21539

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Estimated ship date 10/30/17 if Ordered Today
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NGK Spark Plugs 21539 NTK Oxygen Sensor $34.99
NTK Oxygen Sensor

Specifications:

Number of Wires
4
Wiring Harness Included
Yes
Oxygen Sensor Bung Included
No
Quantity
Sold individually
Voltage Range
0-1 V
Mounting Style
Thread-in

The NTK Air-Fuel Ratio Monitor (AFRM) offers the most affordable wideband system to date. A flexible and rugged system complete with everything needed to get you tuning. The kit comes with a digital display control module, 13' wiring harness, wideband air-fuel ratio sensor, exhaust boss and plug, and a comprehensive tuning manual. The tuning manual includes installation instructions and contains a detailed guide to performance air-fuel ratio tuning.

The AFRM measures and displays air-fuel ratio (AFR) from 9.00 to 20.00:1. It demonstrates superb response and accuracy within 0.1 AFR. The air-fuel ratio information can then be utilized by the user to make fuel delivery adjustments to the vehicle's carburetor, mechanical fuel injection, or programmable electronic fuel injection system. The desired air-fuel ratio can be achieved depending on the performance requirements of the engine or race application. This is an exceptionally useful tool for carbureted engines, where there is a lot of freedom in tuning as well as a great need for proper adjustment.

Features:
  • LED Display Shows AFR or Lambda
  • Simplified Free Air Calibration
  • Reads 9.0-20.0:1 AFR (.062-1.37 Lambda)
  • 0-5 Volt Analog Output Signal
  • Adjustable Sampling Rate Display Speed
  • Dedicated Wide Band Sensor for AFRM
  • New Compact Design

  • Does NGK Spark Plugs 21539 fit your vehicle?

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    1998-1999 CADILLAC ELDORADO

    • EngineType: ALL
    • SubModel: ALL

    1999 CHEVROLET EXPRESS 2500

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2000-2001 CHEVROLET SUBURBAN 1500

    • CC: 5328
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    1999-2002 CHEVROLET SILVERADO 1500

    • EngineType: ALL
    • SubModel: LS

    1997-2003 BUICK LESABRE

    • EngineType: ALL
    • SubModel: ALL

    2001 GMC YUKON XL 2500

    • CC: 5967
    • Liter: 6.0
    • SubModel: SLE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    1996-1997 GMC K3500 PICKUP

    • Liter: 7.4
    • SubModel: SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1998 GMC K2500 PICKUP

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1996-1997 CHEVROLET EXPRESS 3500

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2000 CHEVROLET SUBURBAN 2500

    • EngineType: ALL
    • SubModel: LS

    2002 CADILLAC ESCALADE

    • CC: 5328
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    1996 GMC G3500 VAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1996-1997 GMC K3500 PICKUP

    • Liter: 5.7
    • SubModel: SIERRA XC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1998 GMC C1500

    • EngineType: ALL
    • SubModel: ALL

    1996-1997 GMC K2500 PICKUP

    • Liter: 5.7
    • SubModel: SIERRA XC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1997-2003 BUICK REGAL

    • EngineType: ALL
    • SubModel: ALL

    1999 CHEVROLET P30 VAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2003 CHEVROLET IMPALA

    • CC: 3800
    • Liter: 3.8
    • SubModel: LS SPORT
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    1997 OLDSMOBILE CUTLASS SUPREME

    • EngineType: ALL
    • SubModel: ALL

    1996 GMC K1500

    • Liter: 5.7
    • SubModel: SIERRA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2001 GMC SIERRA 3500

    • Liter: 6.0
    • SubModel: BASE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2001-2002 PONTIAC GRAND PRIX

    • CC: 3800
    • Liter: 3.8
    • SubModel: SE
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    2001 CHEVROLET EXPRESS 3500

    • Liter: 5.7
    • SubModel: LS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1997-1999 BUICK RIVIERA

    • EngineType: ALL
    • SubModel: ALL

    2001 CHEVROLET SILVERADO 1500 HD

    • EngineType: ALL
    • SubModel: LS

    1996-2002 GMC SAVANA 2500

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    2000-2001 CHEVROLET TAHOE

    • EngineType: ALL
    • SubModel: LT

    1998-2000 GMC C3500 PICKUP

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1996 CHEVROLET G30 VAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2002 CHEVROLET AVALANCHE 1500

    • EngineType: ALL
    • SubModel: BASE

    1996-1997 GMC C1500

    • Liter: 5.0
    • SubModel: SIERRA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1999-2000 CHEVROLET VENTURE

    • EngineType: ALL
    • SubModel: LS

    1997-2000 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: ALL

    1996-1997 CHEVROLET C1500

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1997-1999 CADILLAC DEVILLE

    • EngineType: ALL
    • SubModel: CONCOURS

    1996-1999 GMC P35/P3500 VAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1997 OLDSMOBILE SILHOUETTE

    • EngineType: ALL
    • SubModel: BASE

    1996-1997 CHEVROLET K1500

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    2002 GMC YUKON XL 1500

    • EngineType: ALL
    • SubModel: SLE

    1996-1997 GMC YUKON

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2000-2003 CHEVROLET IMPALA

    • CC: 3800
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    2001-2002 GMC SAVANA 2500

    • Liter: 5.0
    • SubModel: SLT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1999 CHEVROLET C1500 SUBURBAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2001 CHEVROLET SUBURBAN 2500

    • CC: 5967
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2000 PONTIAC GRAND AM

    • Liter: 3.4
    • Aspiration: N
    • SubModel: SE
    • Engine Vin: E
    • CUI: 207
    • EngineType: V6 ( 3.4 L / 207 )

    2000-2001 GMC YUKON XL 1500

    • EngineType: ALL
    • SubModel: ALL

    2000 GMC YUKON XL 2500

    • EngineType: ALL
    • SubModel: ALL

    1998-2000 GMC SAVANA 2500

    • Liter: 5.7
    • SubModel: SLE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2001-2003 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: SS

    1996-1997 GMC K2500 PICKUP

    • Liter: 5.7
    • SubModel: SIERRA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1996-1999 CHEVROLET C2500 SUBURBAN

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1999-2000 GMC C2500 PICKUP

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1999 CHEVROLET C1500 SUBURBAN

    • Liter: 5.7
    • SubModel: LS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2001-2002 GMC SAVANA 3500

    • Liter: 5.7
    • SubModel: SLT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1998-2000 CHEVROLET EXPRESS 3500

    • Liter: 5.7
    • SubModel: LS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1997-2001 PONTIAC GRAND PRIX

    • CC: 3800
    • Liter: 3.8
    • SubModel: GTP
    • CUI: 231
    • EngineType: V6 ( 3.8 L / 231 )

    1996 GMC G3500 VAN

    • Liter: 5.7
    • SubModel: VANDURA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2001 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Liter: 6.0
    • SubModel: BASE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2000 CHEVROLET VENTURE

    • EngineType: ALL
    • SubModel: LT

    1996-2002 GMC SAVANA 3500

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2003 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: SS HIGH SPORT

    2000 CHEVROLET VENTURE

    • EngineType: ALL
    • SubModel: VALUE

    1998-2002 CHEVROLET EXPRESS 1500

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1997-2000 PONTIAC GRAND PRIX

    • Liter: 3.1
    • SubModel: SE
    • CUI: 189
    • EngineType: V6 ( 3.1 L / 189 )

    1998-2002 CHEVROLET EXPRESS 1500

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2002 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: SS DALE EARNHARDT SIGNATURE EDITION

    1996 GMC G3500 VAN

    • Liter: 5.7
    • SubModel: SPECIAL
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1996-2000 CHEVROLET EXPRESS 3500

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1997-1998 GMC C2500 PICKUP

    • Liter: 5.0
    • SubModel: SIERRA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    2000-2002 CHEVROLET EXPRESS 2500

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1996-1998 GMC C2500 PICKUP

    • Liter: 7.4
    • SubModel: SIERRA XC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    2002 GMC SIERRA 1500

    • EngineType: ALL
    • SubModel: WT

    1996-1997 GMC K3500 PICKUP

    • Liter: 7.4
    • SubModel: SIERRA XC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1996 GMC K1500 PICKUP

    • Liter: 5.7
    • SubModel: SIERRA XC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2003 CHEVROLET IMPALA

    • EngineType: ALL
    • SubModel: LS

    1999-2002 CHEVROLET SILVERADO 1500

    • CC: 5328
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    1996-1999 CHEVROLET K2500 SUBURBAN

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    2001-2002 GMC SAVANA 2500

    • Liter: 4.3
    • SubModel: SLT
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    2000-2001 CHEVROLET TAHOE

    • CC: 5328
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    1996 GMC C1500

    • EngineType: ALL
    • SubModel: SIERRA XC

    1997-1998 GMC K1500

    • Liter: 4.3
    • SubModel: SIERRA XC
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1997-2000 CHEVROLET MALIBU

    • Liter: 3.1
    • SubModel: LS
    • CUI: 189
    • EngineType: V6 ( 3.1 L / 189 )

    1996-1999 GMC C2500 SUBURBAN

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1999-2000 GMC SIERRA 1500

    • EngineType: ALL
    • SubModel: ALL

    2001-2002 GMC SIERRA 1500

    • EngineType: ALL
    • SubModel: BASE

    2000-2001 CHEVROLET TAHOE

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 294
    • EngineType: V8 ( 4.8 L / 294 )

    1996-1999 CHEVROLET P30 VAN

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1998 CHEVROLET LUMINA

    • EngineType: ALL
    • SubModel: BASE

    2000-2003 PONTIAC BONNEVILLE

    • EngineType: ALL
    • SubModel: ALL

    1996-1999 CHEVROLET K2500 SUBURBAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1996-2000 GMC SAVANA 3500

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1996-2000 CHEVROLET K3500 PICKUP

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1997 BUICK SKYLARK

    • Liter: 3.1
    • SubModel: LIMITED
    • CUI: 189
    • EngineType: V6 ( 3.1 L / 189 )

    2000 CHEVROLET IMPALA

    • Liter: 3.4
    • SubModel: BASE
    • CUI: 207
    • EngineType: V6 ( 3.4 L / 207 )

    1996 CHEVROLET G30 VAN

    • Liter: 7.4
    • SubModel: SPORTVAN
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    2001 GMC YUKON XL 2500

    • Liter: 6.0
    • SubModel: BASE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    1996-1998 CHEVROLET C2500 PICKUP

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1996 GMC C1500 PICKUP

    • Liter: 5.7
    • SubModel: SIERRA XC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1996-1999 OLDSMOBILE AURORA

    • EngineType: ALL
    • SubModel: ALL

    2001 CHEVROLET SILVERADO 1500 HD

    • CC: 5967
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )
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