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NGK Spark Plugs 21539

NTK Oxygen Sensor

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

739-21539

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Estimated to ship on 04/30/18
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NGK Spark Plugs 21539 NTK Oxygen Sensor $51.99
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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    1997 GMC C1500

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

    2001-2002 GMC SAVANA 3500

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

    1998-2000 OLDSMOBILE SILHOUETTE

    • EngineType: ALL
    • SubModel: ALL

    2001 GMC SIERRA C3

    • EngineType: ALL
    • SubModel: ALL

    1996-1999 GMC K2500 SUBURBAN

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

    1999-2000 GMC SIERRA 1500

    • EngineType: ALL
    • SubModel: ALL

    2001 CHEVROLET SILVERADO 1500 HD

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

    1998-2000 GMC SAVANA 2500

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

    1996-2002 CHEVROLET EXPRESS 2500

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

    1999-2002 GMC YUKON

    • EngineType: ALL
    • SubModel: ALL

    1996 CHEVROLET P30 VAN

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

    2000 PONTIAC GRAND AM

    • Liter: 3.4
    • SubModel: SE2
    • CUI: 207
    • EngineType: V6 ( 3.4 L / 207 )

    1999-2002 CHEVROLET SILVERADO 1500

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

    1999 CHEVROLET EXPRESS 2500

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

    1997 BUICK SKYLARK

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

    1998 GMC K1500

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

    2001-2002 GMC SAVANA 2500

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

    2000 PONTIAC GRAND AM

    • Liter: 3.4
    • SubModel: GT1
    • CUI: 207
    • EngineType: V6 ( 3.4 L / 207 )

    1996 CHEVROLET P30 VAN

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

    1996-1999 GMC P35/P3500 VAN

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

    1999 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    2000 CHEVROLET TAHOE

    • Liter: 5.3
    • SubModel: Z71
    • CUI: 323
    • EngineType: V8 ( 5.3 L / 323 )

    1998-2000 GMC SAVANA 2500

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

    1999 CHEVROLET C1500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1996-2000 CHEVROLET K2500 PICKUP

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

    1996-1998 GMC C2500 PICKUP

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

    1999 CHEVROLET P30 VAN

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

    2000-2001 GMC YUKON XL 1500

    • EngineType: ALL
    • SubModel: ALL

    1998-1999 PONTIAC BONNEVILLE

    • EngineType: ALL
    • SubModel: SE

    1998-2000 GMC K3500 PICKUP

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

    2001-2002 CHEVROLET SUBURBAN 1500

    • EngineType: ALL
    • SubModel: LS

    2002 CHEVROLET SILVERADO 1500

    • EngineType: ALL
    • SubModel: WT

    1999 CHEVROLET C1500 SUBURBAN

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

    1997-1999 PONTIAC BONNEVILLE

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

    1998 GMC K1500

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

    1996-1999 CHEVROLET P30 VAN

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

    1996-1999 GMC P35/P3500 VAN

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

    1997-1999 OLDSMOBILE LSS

    • EngineType: ALL
    • SubModel: ALL

    2001 GMC YUKON XL 2500

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

    1996-1999 CHEVROLET K2500 SUBURBAN

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

    1997-1998 CHEVROLET P30 VAN

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

    1996-1997 GMC C1500

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

    2000 CHEVROLET VENTURE

    • EngineType: ALL
    • SubModel: LT

    1996-1998 GMC C2500 PICKUP

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

    1997 PONTIAC BONNEVILLE

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

    1996 GMC K1500

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

    1996 GMC G3500 VAN

    • Liter: 7.4
    • SubModel: VANDURA
    • 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 GMC SAVANA 1500

    • EngineType: ALL
    • SubModel: BASE

    1997-1998 GMC C2500 PICKUP

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

    1999-2002 CHEVROLET CAMARO

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

    2000-2002 CHEVROLET EXPRESS 2500

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

    2002 GMC YUKON XL 1500

    • EngineType: ALL
    • SubModel: SLE

    2001 CHEVROLET EXPRESS 3500

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

    2001 GMC SIERRA 1500 HD

    • EngineType: ALL
    • SubModel: ALL

    1998-2000 GMC SAVANA 2500

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

    1998-2002 CHEVROLET EXPRESS 1500

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

    1996-1999 GMC K1500 SUBURBAN

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

    1996 GMC C1500 PICKUP

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

    1999-2002 CHEVROLET SILVERADO 1500

    • EngineType: ALL
    • SubModel: LS

    1998-2002 CHEVROLET EXPRESS 3500

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

    1996 CHEVROLET G30 VAN

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

    2001 GMC YUKON XL 2500

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

    1996-1997 CHEVROLET ASTRO

    • EngineType: ALL
    • SubModel: ALL

    1998-2002 CHEVROLET EXPRESS 2500

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

    2001-2002 GMC SAVANA 2500

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

    1996-1997 GMC K3500 PICKUP

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

    1997-1999 CADILLAC DEVILLE

    • EngineType: ALL
    • SubModel: CONCOURS

    2000-2001 CHEVROLET SUBURBAN 1500

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

    1999-2000 GMC C2500 PICKUP

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

    2001 GMC SIERRA 3500

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

    1999-2000 CADILLAC ESCALADE

    • EngineType: ALL
    • SubModel: ALL

    1998-1999 OLDSMOBILE INTRIGUE

    • EngineType: ALL
    • SubModel: ALL

    2000 CHEVROLET VENTURE

    • EngineType: ALL
    • SubModel: WARNER BROS.

    1997-1999 OLDSMOBILE 88

    • EngineType: ALL
    • SubModel: ALL

    2000 GMC YUKON XL 2500

    • EngineType: ALL
    • SubModel: ALL

    1998-2000 CHEVROLET EXPRESS 3500

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

    2001 CHEVROLET SUBURBAN 2500

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

    2003 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: SS PACE CAR

    1996-1997 CHEVROLET C1500

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

    2002 CHEVROLET MONTE CARLO

    • EngineType: ALL
    • SubModel: SS 35TH ANNIVERSARY EDITION

    1996-1999 CADILLAC SEVILLE

    • Liter: 4.6
    • Aspiration: N
    • SubModel: STS
    • Engine Vin: 9
    • CUI: 281
    • EngineType: V8 ( 4.6 L / 281 )

    1997 CADILLAC DEVILLE

    • EngineType: ALL
    • SubModel: D-ELEGANCE

    1999-2001 CHEVROLET SILVERADO 2500

    • EngineType: ALL
    • SubModel: BASE

    1996-1997 CHEVROLET EXPRESS 3500

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

    1997-1998 OLDSMOBILE REGENCY

    • EngineType: ALL
    • SubModel: ALL

    1998 GMC C1500

    • EngineType: ALL
    • SubModel: ALL

    1996-2000 CHEVROLET K3500 PICKUP

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

    2002 CHEVROLET TAHOE

    • EngineType: ALL
    • SubModel: BASE

    1998 CHEVROLET LUMINA

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

    2000 CHEVROLET TAHOE

    • EngineType: ALL
    • SubModel: LIMITED

    1996-2002 GMC SAVANA 2500

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

    1996 GMC K1500 PICKUP

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

    2002 CHEVROLET SUBURBAN 1500

    • Liter: 5.3
    • SubModel: BASE
    • CUI: 323
    • EngineType: V8 ( 5.3 L / 323 )

    1997-1998 OLDSMOBILE ACHIEVA

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

    1997 CHEVROLET K2500 PICKUP

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

    1996-1998 GMC C2500 PICKUP

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

    1996-1997 GMC C3500 PICKUP

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

    1999-2000 PONTIAC MONTANA

    • EngineType: ALL
    • SubModel: ALL

    1996-1997 GMC YUKON

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )
    Some parts are not legal for use in California or other states with similar laws / regulations