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ACDelco AFS105 GM Original Equipment Heated Oxygen Sensor

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410 ratings

| 47 answered questions

Amazon's Choice in Automotive Replacement Oxygen Sensors by GM

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Detect oxygen content in the exhaust gases to optimize emissions and fuel economy
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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		ACDelco AFS106 GM Original Equipment Heated Oxygen Sensor	Denso 234-4018 Oxygen Sensor	Denso 234-4668 Oxygen Sensor	Denso OXYGEN SENSOR

Customer Rating	(410)	(413)	(334)	(1478)	(209)
Price	$36.41	$41.59	$23.79	$28.66	$37.88
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Item Dimensions	7.6 x 2 x 2.3 inches	7.6 x 2 x 2.3 inches	0 x 0 x 0 inches	0 x 0 x 0 inches	0 x 0 x 0 inches

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Product information

Technical Details

Manufacturer

ACDelco

Brand

Item Weight

3.2 ounces

Product Dimensions

7.6 x 2 x 2.3 inches

Item model number

AFS105

Is Discontinued By Manufacturer

Manufacturer Part Number

AFS105

OEM Part Number

19178918

Additional Information

ASIN

B0013FWACW

Customer Reviews

410 ratings

4.8 out of 5 stars

Best Sellers Rank

#44,588 in Automotive (See Top 100 in Automotive)
#92 in Automotive Replacement Oxygen Sensors

Date First Available

October 10, 2007

Warranty & Support

Product Warranty: For warranty information about this product, please click here. [PDF ]

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Product guides and documents

Product Documentation (PDF)

Product description

An ACDelco GM Original Equipment Oxygen (O2) Sensor is a GM-recommended replacement for your vehicle’s original component, and is a special feedback sensor on your vehicle’s exhaust system. This sensor measures the proportion of oxygen in the exhaust gases. Using this measurement, the engine management computer can adjust the air/fuel ratio near the optimum value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. This original equipment oxygen sensor has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

From the manufacturer

ACDelco, ACDelco Parts, Auto Parts, Aftermarket Auto Parts, GM OEM Parts, GM Auto Parts, GM Parts

ACDelco, ACDelco Air Conditioning Condensers, ACDelco A/C Condensers, AC Condensers, ACDelco Parts

True GM Original Equipment and More

ACDelco is the true General Motors Original Equipment parts brand, infusing a century of experience, innovation and quality into more than 90,000 GM OE and other parts.


Original Down To Our Blueprint ACDelco parts appear in more than 2 million GM vehicles each year, which makes us the only GM parts brand to offer the same Original Equipment parts shipped for GM vehicle production.	A Professional Choice ACDelco PROFESSIONAL parts are manufactured to meet expectations for fit, form and function, offering high quality and great value.	The ACDelco Advantage Our ADVANTAGE parts provide a competitively priced, yet quality alternative to unbranded aftermarket components.	It's Our Specialty ACDelco gold-label SPECIALTY parts are engineered to OE expectations for exceptional applications that require enhanced performance, including police vehicles.

ACDelco, ACDelco Auto Parts, ACDelco Parts, Auto Parts, Aftermarket Parts, GM OEM Parts, GM Parts

ACDelco Emission Control

Whether you need exact GM Original Equipment specification parts or high-quality replacement parts, you can rely on ACDelco Emission components, Fuel Injectors, and Control Modules to deliver. With our GM Original Equipment line and a select offering of Professional, premium aftermarket products, we keep your GM car, truck, or SUV running in tip-top form. Our portfolio includes: fuel injectors, control modules, mass air flow sensors, oxygen sensors, exhaust gas recirculation valves, manifold absolute pressure sensors, throttle position sensors, idle air control valves, and secondary air injection reaction components.

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Customer reviews

5 star		85%
4 star		10%
3 star		3%
2 star 0% (0%)		0%
1 star		1%

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Top reviews from the United States

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Paul

Makes a difference what transmission you have

Reviewed in the United States on May 13, 2019

Verified Purchase

I ordered these (AC DELCO AFS105) for my 1997 C2500 5.7 liter. Amazon initially said these fit. Once they arrived they did not fit. After more reading I discovered the front o2 sensors are different depending what transmission you have. I assume that is one of the differences on a 7400 gvw and a 8600 gvw truck.
Once I realized this and changed the transmission spec on my truck in the "My garage" from 4l60e to 4l80e, Amazon no longer said they fit and I reordered some that I hope do fit.
I could find no AC Delco on-line or at the local parts store for the front two o2 sensors on my particular truck. I'm sure these are a fine product but, I will never know.
UPDATE: The next two I ordered (diff. brand) did fit. Be sure your transmission is set to the correct one before ordering.

3 people found this helpful

Helpful

Mike

Happy Customer. good product fair price 1999 gmc jimmy use for up and down stream

Reviewed in the United States on March 29, 2019

Verified Purchase

1999 gmc jimmy 4.3 4x4 got the : P0135 Code : bank 1 sensor 1 bad O2 heater sensor . for the price I just decided to change all three of them at the same time with this one. for both the up and down. its 2 Upstream 1 Downstream. I cleared the check engine light. changed them. crank the car and let it warm up for 10 minutes then drove it for about 20 miles. OBD 02 said still not ready. so I waited till it was "cold real early in the morning" started the car fast didn't let it warm up and drove it a couple miles .OBD 02 then 'finally' changed to ready. so I started it back up and just let it idle for 30 minutes. drove it to the shop didn't shut it off "inspection granite" Happy Customer. good product fair price. .. ps for the love of God use some anti seize on the threads people. and yes the anti seize will burn off smoke and smell like your cars on fire for the first time or two you drive it afterwards.

2 people found this helpful

Helpful

Worked well

Reviewed in the United States on July 7, 2019

Verified Purchase

I used these on a 98 Suburban and they worked well. The chart said they didn't fit my vehicle, but this was what came with it from the factory.

3 people found this helpful

Helpful

Debra Tyler

Works fine but had to weld the ground tang back on again

Reviewed in the United States on September 30, 2015

Verified Purchase

This is the third one of these I bought for our 99 Blazer. Bought two initially to replace originals in front of the cat and they worked great.
Decided to just get the third one that goes after the cat since it has 180k on it. However this arrived defective. The ground lead was not welded to the sender. There was a weld mark but it was not attached. I just fixed it, welded it on, as it was easier for me to do that than fuss with returning it.
Works fine.

5 people found this helpful

Helpful

Jason

Part number may be different than AFS105

Reviewed in the United States on April 18, 2020

Verified Purchase

This vendor is selling an ACDelco 0MOS6020 Oxygen sensor in place of the ACDelco AFS105. Initially, I was going to return the product, but after some research I determined that the connection and pinout of the connector is the same as the AFS105. The AFS105 has a heater resistance of about 15ohm, the 0MOS6020 is about 11.4 ohm, so it is well within spec. After verifying fitment, pinout, and resistance, I have kept and installed these on my '96 Chevy Silverado 5.7L and work fine. You can search on Herko Automotive website for more information on the ACDelco 0MOS6020. 4 stars because the product works but is not an actual AFS105 unit.

Helpful

Darla G.

Best product for Chevrolets

Reviewed in the United States on July 29, 2015

Verified Purchase

Bought a Bosch O2 sensor for 2001 Blazer. Still had code for O2 sensor. Put this on and the code is gone. Best product for Chevrolets.

Update: I bought 2 and replaced both upstream O2 sensors. 3 weeks later the check engine light comes back on. The drivers side is bad. I did take it to a mechanic to make sure it was the O2 sensor that was bad and not something else. I am sending the bad one back for a replacement. I hope the replacement works!

6 people found this helpful

Helpful

Ray Barrington

Does Not Match OEM

Reviewed in the United States on November 7, 2016

Verified Purchase

Although listed and sold as an AC Delco part, the one I received was not, so I'm going to return it. Best I can figure, the one they sent me is either a Bosh or a Denso. The very faintly stamped number on the sensor is most similar to a Bosh part number. It comes with a little packet of anti size that looks like the Denso ones I've received over the years. The sensor is different than the one that came off the car (which, by the way is stamped AC with the ASF105 part number on it). The business end of the sensor is cut differently, though the electrical connector is the same layout. So, either AC Delco is just selling rebranded parts or the one I got had been returned with another part. Either way, I'm not going to keep it. I specifically ordered the AC Delco part because that is what is supposed to be OEM and I find out that I'm getting a part from a different manufacturer.

7 people found this helpful

Helpful

M. Oliver

ACDelco AFS105 Oxygen Sensor

Reviewed in the United States on February 28, 2013

Verified Purchase

This fit my 97 Blazer perfectly and has been working great. Only took 15 minutes to remove and replace the old o2 sensor. Check engine light (MIL) turns off after several successful drive cycles with out the ECU detecting any problems or if you have a scan tool you can erase the DTC's set in the ECU and that will clear the check engine light (MIL) and if the o2 sensor was your true problem then the light should not come back on. If it comes back then you miss diagnosed the problem and you probably changed a good o2 sensor. Don't blame the sensor for poor a mechanical diagnoses. Check engine lights are only indicators to symptoms they don't tell you how to fix the car even with a OBD2 code reader. Do your research before you buy. The biggest problem on this site are people who buy the wrong item because they did not research then give the item a bad review because it did not fit. Read! read!! read!!! and then read!!!! some more before you order.

16 people found this helpful

Helpful

Top reviews from other countries

Jim Roy

Worked well for non intended use

Reviewed in Canada on January 31, 2020

Verified Purchase

Used this heated sensor to upgrade the single wire o2 sensor on a 1992 454 tbi engine. Selected this one based on price . Works flawlessly. Goes into and stays in closed loop quickly, even in sub zero weather . A Single wire sensor will only last 60000 km tops , then mpg tanks. Cut end , spliced wires . 1 - blue o2 wire , 2 - switched positive for heater ,element . All the rest crimp together and ground. Excellent upgrade . Also replace CTS as part of a full tune up . Quality part I assume would work perfect for its intended use.

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Pages with related products. See and discover other items: bank 1 sensor 2 oxygen sensor, 98 chevy 5.7, 98 chevy silverado 1500, upstream o2 sensor, 1997 gmc, 1997 suburban


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