The 12013 is an upgraded replacement for the 12014 original GM part. The 12014 is very hard to replace because of space limits (Chevy S10 Blazer) and tool setup. The new 12013 is not the correct pix shown above in the title. The new 12013 has a stainless steel casing with the 7/8 inch lug moved up 3/4 inch above the gas washer. The old 12014 has the lug flush. This makes the installation and future replacement easy, with just a simple 7/8 inch open end wrench, and can now be replaced within two minuets vice the old 2.5 hours I used to spend. Also, if you use a pair of extended Kelly forceps to remove the plug and reinstall, even with my large fingers, you can hook up the wire with ease. GM made this truck for a chipmunk with a jack hammer to do repairs. Bosch out thinks GM with a common sense approach that allows any one to replace an O2 sensor. Gene MDRead full review
Verified purchase: Yes | Condition: New
The item I purchased to repair my truck is top of the list quality. There are cheaper alternatives, but I like direct replacement parts,not universal ones that I have to alter my wiring harness to fit. Great product,highly recommend.
Verified purchase: Yes | Condition: New
I always try to purchase a name brand product and that usually works well for me, the sensor made an immediate difference and I would recommend it to anyone
Verified purchase: Yes | Condition: New
Direct fit. Easy to install with plug in. Excellent quality.
Verified purchase: Yes | Condition: New
Work and fit very well!
Verified purchase: Yes | Condition: New
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