Dorman 926-387 Knock Sensor And Harness Kit Compatible with Select Lexus/Toyota Models

Installed on 02 es300 work car with 340k miles a while back. So far so good. Before I changed them, the car wouldnt run right. It had no power and wouldnt go into O/D. I cleared the code when I replaced them and problems solved.

It solved the problem for about a month and then bam, code showed again and guess what one of the codes was, go ahead and guess... Correct, knock knock, who's there... (Insert angry face here)... I had the codes read and top of the list, knock sensor. I did some digging and found the harness connector could be the issue. I went and disconnected and made sure it was tight. To no avail... I quit! Makes me wonder if it's legit Dirman parts.

Absolutely worth it it's a hassle to install but once you install it it's just as good as the name brand part itself.

Thanks good parts working great

Had to purchase these and relocate it to the outside. Initially I purchased denso ones off of ebay and they were junk. I just left the denso in the engine. Unfortuantely I didn't know they were bad until I finished and the code came back right away. These ones did the trick. I have no idea how long they will last but they fixed the vehicle es300 2003. Rat had chewed the wires. I spent so long trying to fix it either cutting the wire and making it into one to only make things worse. The only thing that fixed it was relocating it out of the engine and attaching it to the fuel rail metal part. Only do this when you are sure its the wire or the actual sensor. If you have issue with the engine itself you will have to fix. Hope this helps.

Don't follow torque specs on these. I broke one off in the cylinder head. Fortunately I was able to extract it. Good price though. One sensor at the parts store was 83 bucks! Update, these are cheap knock offs. just buy Denso Toyota brand ones and be done with it. The cost of time and parts to tear the top end off a second time is more expensive!

I generally don’t give reviews but due to the amount of work to do this procedure I should share my experience. While the sensors appear to be of good quality, the harness connector that goes to the factory harness does not fit securely. The issue is as shown in pictures, the OEM plug has thinner side walls than this Dorman one. It will only go in until hitting the rubber seal. I ended up using the OEM plug on the new harness so it would actually click lock in place. This requires pulling the connection blades from the plugs to swap them. One other thing to note is that the new harness has a slightly higher impedance than the OEM harness(.00 vs.01). Probably doesn’t make a difference but worth mentioning. OEM has gold plated leads and heavier gauge wire

Its a big job to do, But these sensors threaded in nicely, Dorman products usually play well with Toyota fitment. The Price for these were off the charts great for what you getting. I will know more once I drive the vehicle and turn off the check engine light.

This installation took me very very very long. I ended up getting a set of gaskets, an angled ratchet for those stubborn bolts behind the plenum. I also did the spark plugs and ignition coils, half are buried under the plenum. Save yourself some money and buy them from RockAuto if you are in Canada, amazing prices, fast shipping. Also, get some coolant or drain it beforehand because it'll need replacing. Overall, hoping that these things last. Will update if anything changes.

Once again I thought I could cheap out and buy this quick change kit but it ended up causing more issues! Unsure why whether it be bad sensors or wording harness was wired wrong, the 4 pin connecter would not click in properly so I had to zip tie it and after installing had huge loss of power and went from 1 code too 2 bad knock sensor codes aka DO NOT BUY!!!

Good product

Fixed the old one that were tripping the knock sensor codes on my 2001 toyota highlander with 278,000kms

One sensor broke as I was tightening it. The harness to vehicle connector needed to be swapped with the original. Does not plug in as is. Harness did resolve knock errors after extra effort