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knock sensor purchased online doesnt fit

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Old Dec 18, 2025 | 04:27 AM
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Default knock sensor purchased online doesnt fit

So I purchased this knock sensor and harness for my 2003 ls430 online
The previous owners of that same vehicle gave good reviews to the seller.The description said knock sensor and harness for Ls430 2001-2003.
Are you guys cutting the ends to make it fit.Maybe cutting the ends to make it fit?
Sorry I cant afford OEM at this moment.Doing my starter and wanted get this check engine 325 and 330 code off


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Old Dec 18, 2025 | 09:28 AM
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Where did you get the knock sensors?

Does the harness connector look like this?


Does the sensor look like this?


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Old Dec 18, 2025 | 01:14 PM
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What did the old knock sensors look like?
What part number did the seller reference for the wiring harness?
This one is tricky as the old style sensor (8961530080) shows fitment for 2001 to 2003 430's, and the new style sensor (8961506010) shows fitment to 2003 to 2006 430's.
2003 must be the transition year, so look at the old sensors to determine which you have. This will tell you which wiring harness part number to look for.
( Sorry for the gynormous pics )

Old style


New style
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Old Dec 18, 2025 | 02:01 PM
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Originally Posted by paulo57509
Where did you get the knock sensors?

Does the harness connector look like this?


Does the sensor look like this?

yes this is for the knock sensor.I am talking about the other end where it goes to the black plastic where all the wires go through
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Old Dec 18, 2025 | 02:05 PM
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Default The harness is the issue not the knock sensor

The harness going behind the engine is the issue.Its in the picture.It dont fit

Originally Posted by bradland
What did the old knock sensors look like?
What part number did the seller reference for the wiring harness?
This one is tricky as the old style sensor (8961530080) shows fitment for 2001 to 2003 430's, and the new style sensor (8961506010) shows fitment to 2003 to 2006 430's.
2003 must be the transition year, so look at the old sensors to determine which you have. This will tell you which wiring harness part number to look for.
( Sorry for the gynormous pics )
The harness going behind the engine is the issue.Its in the picture.It dont fit


New style
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Old Dec 18, 2025 | 02:40 PM
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As mentioned above-

What part number did the seller reference for the wiring harness?



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Old Dec 19, 2025 | 03:50 AM
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Originally Posted by bradland
As mentioned above-

What part number did the seller reference for the wiring harness?
No part numbers given.This was the exact title of the ad with a picture of the sensors and the harness.Mind you I read the reviews of people who bought this sasme sensor and harness for this exact same car and they were good. So did this ebay seller buy fake reciews for this particular item?
"2 Pcs Knock Sensor+Wire Harness Kit Front Complete Fits 2001-2003 Lexus LS430"
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Old Dec 19, 2025 | 08:52 AM
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The reviews are obviously meaningless.
Have you reached out to the seller with these questions?
I doubt anyone here can assist your situation from a pic of an incorrect, and more importantly, unknown part.
Find the correct wiring harness based on the type of knock sensor your car has and buy the correct Toyota/Lexus part.
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The correct part on ebay might be the around the same cost and you should be able to return this one. They provide pictures and just make sure it looks like yours. If can't return and don't want to buy correct part then just make it work but make sure wiring is correct.
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Old Dec 21, 2025 | 10:07 AM
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I couldnt install the harness but I used the knock sensors and the knock sensor codes have not come on in 40 miles.I was in there to change the starter
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