Obtaining the correct knock sensor

[mikemcclain8]

Hoping for a little help with finding the correct part.

2005 22i, 5.7 340HP Marine Power

My knock sensor has bad threads and it's tough to get it seated in the block. I tried ordering a new one but the info I found on which one to order turned out to be a 1/4" threaded end which is way too small. Mine is either a 3/8" or 1/2". Anyone know for sure which size and a good parts supply place to get one? I've used gmpartsdirect before for the suburban but haven't used it for boat stuff. Thank you in advance!

Mike

[freeheel4life]

It's a standard GM knock sensor. You should be able to get one at Oreillys/Advance Auto Parts etc. Because they are usually confused and can't look for parts without a vehicle to search for in their system just say you have an early 2000s half ton/Burban with a 5.7. Should get you what you need

[mikemcclain8]

Thanks Freeheel, I'll try that route!