Yikesai 4X Backup & Reverse Sensor Kit, Rear Parking Assist Sensor Compatible with Ford F150 F250 F350 E150 E250 Escape Explorer, Lincoln Mercury Mariner, Replaces 684-029 3F2Z-15K859-BA

These sensors were cheaper than the same parts at a junk yard (and the junk yard parts were all no good). These do NOT exactly match the appearance of OEM when installed, so even if you have only one that needs replacement, you'll want to replace all 4 if you care about them matching in appearance. They are not hard to replace and fit perfectly with the OEM housing for my 2006 F-250. They fixed my park assist system and work great now.

They way the item was package was not professional. I got my items in a kitchen ziplock back with no description of items. The sensors themself was a match to my 2013 f250 super duty. HOWEVER, They did not fit. I discovered the new sensors were a 1/4 inch longer than what was in there. I had to grind down the part of the sensor that connects to the wire connector from the truck. Once I ground down that part the connector it snapped into place. It was a perfect fit from where they fit into the bumper! Tested them and they work perfectly

The OEM sensors make a faint clicking noise when activated, which lets you diagnose which one of the four is bad. I was getting no clicks so it seemed all were bad and I was thrilled to find a full set for around $25. No instructions were provided but I've replaced these before. You can find online videos if you can't figure it out. Two of my old sensors broke when removing them and the remaining portion had to be lightly tapped out of the bumper with a hammer and a flat punch. My 19 year old wiring harness didn't lock securely onto a few of the sensors and for those I secured them with a wrap of electrical tape. If you are having trouble getting to the two inner sensors, drop the spare tire and get it out of the way for easy access. My parking aid system was fully operational in less than half an hour. One thing I noticed though is that these sensors don't make that soft clicking noise, so if one goes bad in the future it will be tough to diagnose if I just want to replace a single one.

My rear back up sensors stopped working and I was going to take it to the dealer to fix. I was dreading paying most likely $500 minimum at the dealer. I looked on line found these. I looked on YouTube and found a how to video to replace them. Took me less than 10 minutes to replace and spent a little over $20.

Good for 6 months. Bought 2 sets of these already. One in March 2025 and second set in September 2025. First set quit working so ordered again in Sept. here it is April 2026 and 2 of the 4 won’t work. Go ahead and buy OEM

Replaced one of the sensors that was broken when we purchased the truck and the warning light on the dash went away and got the audible alert when something was behind the truck and we put it in reverse. It was pretty easy to install by climbing under the truck and finding the broken sensor's mount on the backside of the bumper. I just expanding the two clips that hold it in place with a short flathead screwdriver on my swiss army knife, then unplugged the broken sensor, plugged in the new sensor and snapped the new one back into place. I had to push pretty hard to get the new sensor to click in and there is a slot on the mount and a little nub (see photo) on the new sensor that also needed to be lined up in order for it to snap all the way in.

Fixed the faulty backup sensors on my used 2011 super duty. Installed pretty easily. I only replaced the bad ones and kept the extras for spares. It's actually easy to tell which ones are bad. You shift into reverse to activate them and if you go the back of the truck you actually here them repeatedly clicking if they're working. Replace the silent ones and you're back in business. Easy peasy.

Perfect fitment. Easy to replace. Unfortunately they did not fix my issue, so I cannot speak to their quality. All said, I'll give these replacements the benefit of the doubt and blame my issue (2014 F250) on junky ford products that are designed to fail in order to generate service revenue, and I'll bet I'm 100% correct.

All worth it as they fit really well and work as they should.

I have a 2009 Ford Escape V6 3.0 Limited Edition and these sensors fit. As you can see from the picture they look different than the OEM part but they do fit. I believe it’s the same sensor for 2008 and 2009. The dealer part # is 4F2Z15K859A

works great

Capteur fonctionne correctement mais pas aussi bien que ceux d’origine mais cela fait la job.il faut rester prudent si on recule trop vite .Manque un peu de sensibilité.Il y en a un qui a été difficile à installer mais finalement tout est ok.reste à voir la durée de vie. Je recommande pour le petit prix

Works as it should.