GM Genuine Parts AFS106 (19178116) Heated Oxygen Sensor

I have a 2001 Silverado 1500 pickup with 5.3L engine and 220,000 miles. I have an inexpensive Autel code reader that I also bought from Amazon. When the "service engine" light comes on, I plug in the reader, and it tells me what part to replace. My truck has four O2 sensors, two on each side, one in front of, and one in back of the catalytic converters. Four total. The two pre-converter sensors are the same, and the two post-converter sensors are the same. Last winter, I replaced one, and the truck ran so much better, I replaced the other three this May. The truck runs like new! These sensors send information to the engine computer telling it how to adjust the fuel-air mixture. The performance and mileage both improved to like new! Easy DIY replacement. The Amazon price was least expensive of the online retailers, and about 1/3 of retail. I love the Amazon feature where you enter your vehicle information, and it selects the appropriate parts. I buy LOTS of parts on Amazon, and the selection feature has never been incorrect! This is a good deal all the way around. Every time I replace a part I purchased from Amazon, I figure that I'm saving hundreds off dealer cost! I recommend the O2 sensors and their other parts as best option available!!! As an aside, Amazon sells an offset socket tool with a cutout on the side of the socket to go around the wire cables to get onto the O2 sensor to remove it. This tool is cheap, and is a boss tool! It works great. I also spray some PB Blaster or liquid wrench on the joints between the sensors and the exhaust pipes about a week before I do the work. The sensors are on there good after years of heat and corrosion, but they come off easy with the tool and liquid wrench! Remember, your saving hundreds over the shop, and getting a car or truck that runs like new!

Perfect fit and restored my 1996 Vortec v-6 to its smooth idle.

Perfect fit every time. 1998 K1500 5.7

The right part and eazy to install.

Worked as it should. Helped our 96 GMC k1500 run much better once we figured out the O2 sensor was the issue

This is the rear 02 sensor. Once the old one was removed, installation of the new one was straight forward. It operates good. When these 02 sensors have been in the vehicle for a number of years. It's a good idea to have a good torch set on hand. Needs a lot of heat to remove the old one.

Product worked well when installed. Was tough getting old one out soaked in penetrating oil for 4 days then a little pressure came out used a box wrench had to cut old wires first . Watch utube videos . All codes in truck cleared truck is 2001 chevy suburban 235000 on it

Worked perfectly. Would buy again.

Good fit and it works. I’m happy

slow delivery to Canada, but not Amazon's fault (Canada post strike) so far all went well-part seems to work good