Direct Fit Oxygen Sensor
Fits Buick, Pontiac, Cadillac & more — 50 vehicle applications
In stock — order by phone
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Call 1-866-461-2787 to orderQuote part 21539
Review shipping eligibility for this region
- Canadian Owned
NTK 21539 Vehicle Fitment
Fits 50 vehiclesThis Direct Fit Oxygen Sensor fits Buick, Pontiac, Cadillac, Chevrolet and 1 more makes vehicles.
2002 Chevrolet Avalanche 1500
2002 Chevrolet Avalanche 1500
2001 Chevrolet Silverado 1500 HD
2001 Chevrolet Silverado 2500 HD
2001 Chevrolet Silverado 3500
2000-2002 Chevrolet Suburban 1500
2000-2002 Chevrolet Suburban 1500
2000-2001 Chevrolet Suburban 2500
1999-2002 Chevrolet Silverado 1500
1999-2002 Chevrolet Silverado 1500
1999-2001 Chevrolet Silverado 2500
1999-2000 Chevrolet Silverado 2500
1997-2000 Chevrolet Venture
1996-2002 Chevrolet Tahoe
1996-2002 Chevrolet Tahoe
1996-2000 Chevrolet C2500
1996-2000 Chevrolet C2500
1996-2000 Chevrolet C3500
1996-2000 Chevrolet C3500
1996-1999 Chevrolet C1500
1996-1999 Chevrolet C1500
1996-1999 Chevrolet C1500
1996-1999 Chevrolet C1500 Suburban
1996-1999 Chevrolet C1500 Suburban
NTK 21539 Specifications
NTK 21539 Product Description
Direct Fit Oxygen Sensor
About NTK
Shop NTK Oxygen Sensor at Autrex with vehicle fitment details, current pricing, and checkout options for the NTK 21539. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Seller reviews
What customers say about buying from Autrex — service, shipping and support. These are reviews of the store, not of this specific part.
- July 2026
Couldn't locate the parts for 2013 Civic Si Sedan. Front struts are an Anomaly found them at Capital autoparts. Great service and great parts. Shipping by CanPar sucked however
- July 2026
Great customer service. I placed an order for wheels and tires and it was an easy transaction. Make sure you read the expected lead times for delivery however. I misread that part, but the order did arrive in the correct timeframe stated. The Hostile rims and Hercules tires look great. Thank you
- July 2026
Awesome
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Frequently Asked Questions — NTK 21539
What vehicles does the NTK 21539 fit?
The NTK 21539 fits 50 vehicle applications including 1997-2003 Buick LeSabre, 1997-2003 Buick Park Avenue, 1997-2003 Buick Regal, 1997-2003 Pontiac Grand Prix, 1999-2002 Cadillac Escalade and 45 more. Check the full fitment list above to confirm your vehicle.
How do I confirm the NTK 21539 fits my vehicle?
Select your year, make, model and engine in the vehicle selector on this page to see a fit or does-not-fit result for the NTK 21539. If your vehicle has options that change the part (for example brake package or axle), the result lists the questions to check. A parts specialist can also confirm fitment at 1-866-461-2787.
What are the shipping options for the NTK 21539?
Shipping options for the NTK 21539 are shown during checkout and may vary by item, address, and availability. Eligible orders over $99 may qualify for free shipping, with some exceptions. Call 1-866-461-2787 if you need help confirming shipping or pickup before ordering.
How much does the NTK 21539 cost?
The NTK 21539 is currently listed at $79.00 CAD at Autrex. Final price, shipping, taxes, and availability are confirmed during checkout. Call 1-866-461-2787 if you need help before ordering.
Is the Direct Fit Oxygen Sensor a direct fit replacement?
Fit depends on the vehicle and its configuration. Select your vehicle and review the fitment result for the Direct Fit Oxygen Sensor before ordering.