Product review (5 stars): Fixed the flame ignition problem our oven was having, worked perfectly again, oven stays at set temp more evenly now :)
Easy fix to a persistent problem, oven consistently would not light after several clicks of the igniter circuit before; now it lights by the second click every time. Only issue we had with installation was lack of good how-to videos, but it is very straightforward DIY job with only a #2 Phillips screwdriver and a 5/16 nut driver for tools, all done from front of oven, no need to remove back panel. A secondary light source is helpful, but not required to get the job done.  Didn't find any videos on doing the replacement of this specific part, but did find easy to follow, step by step instructions on several websites.

Safety precaution: shut off gas and unplug oven's power cord before attempting igniter replacement.

Pro tip: after removing the oven floor and heat panel, place tape or tin foil over the air gaps under the burner tub before removing its mounting screws...if a screw drops though, it is a dickens to get it out, easier to prevent such loss by covering those holes first; remember to remove the same tape and/or foil after remounting the burner tube.

Goes without saying, but several negative reviews for this item bring me to post this little reminder: if you're not sure of your oven model or needed replacement part number, look inside first to make sure your oven actually uses the L shaped igniter, not the I shaped one, they are not interchangeable!