Recommendations on Knock Senor Kit
Thread Starter
Racer
Joined: Feb 2023
Posts: 307
Likes: 50
Recommendations on Knock Senor Kit
Hey all,
I have a CEL on for the knock sensors 1 and 2 and the mechanic told me they need replacement. But everywhere I check online for C5 Knock Sensor kits they have bad reviews. Is there anywhere recommended to make sure I get ones thatll work and not give me a headache with a good quality manifold gasket and harness?
Thanks all
I have a CEL on for the knock sensors 1 and 2 and the mechanic told me they need replacement. But everywhere I check online for C5 Knock Sensor kits they have bad reviews. Is there anywhere recommended to make sure I get ones thatll work and not give me a headache with a good quality manifold gasket and harness?
Thanks all
Le Mans Master
Joined: Feb 2021
Posts: 6,349
Likes: 4,133
From: Florida
2025 Corvette of the Year Finalist - Unmodified
2024 C5 of the Year Winner- Unmodified
2022 C5 of the Year Finalist - Unmodified
I just installed ACDelco knock sensors and Dorman wiring harness. So far, so good. The ACD’s are expensive but get excellent reviews. The Dorman harness looked fine to me.
Knock sensors
https://www.summitracing.com/parts/ADO-213-3521
Wiring harness
https://www.summitracing.com/parts/RNB-917-033
Valley pan:
Fel-Pro MS92465 Engine Intake Manifold Gasket https://a.co/d/aerF6SR
Intake manifold:
ICT Billet LS1 LS6 FAST LSX Intake Manifold Seal Oring Gasket Set Compatible with Camaro Corvette LS GTO LM7 LR4 LQ4 L59 LQ9 LM4 L33 Gen III FBody C5 G8 551281 https://a.co/d/4FpqZyC
- or -
FEL-PRO MS 92438 Intake Manifold Gasket Set https://a.co/d/gLeAzGA
Knock sensors
https://www.summitracing.com/parts/ADO-213-3521
Wiring harness
https://www.summitracing.com/parts/RNB-917-033
Valley pan:
Fel-Pro MS92465 Engine Intake Manifold Gasket https://a.co/d/aerF6SR
Intake manifold:
ICT Billet LS1 LS6 FAST LSX Intake Manifold Seal Oring Gasket Set Compatible with Camaro Corvette LS GTO LM7 LR4 LQ4 L59 LQ9 LM4 L33 Gen III FBody C5 G8 551281 https://a.co/d/4FpqZyC
- or -
FEL-PRO MS 92438 Intake Manifold Gasket Set https://a.co/d/gLeAzGA
Safety Car
Joined: Dec 2015
Posts: 3,946
Likes: 1,405
From: Canada
While you are there you might change the oil pressure sensor if it’s original. You can find all your parts at Rockauto then you can choose from the cheapest to the best. Shipping is fast and customer service is excellent
Tech Contributor
Joined: Jan 2007
Posts: 19,115
Likes: 1,038
From: Dyer, IN
I wouldn't given the replacements are hit or miss. If you have a factory OPS that is not leaking, I would leave it alone. Inspect all the wiring in that area...and call it a day.
Instructor
Joined: Jun 2020
Posts: 116
Likes: 54
From: Colorado Springs
Based on several threads posted here previously, I bit the bullet and went with NAPA knock sensors and NAPA replacement harness. So far, about 2000 miles since then and no errors and no codes. I also made sure to RTV the knock sensor covers to prevent water intrusion and subsequent corrosion. I also think my first detailed engine cleaning after I received the car caused my Knock Sensor failure.
Last edited by epimetheus-lee; Apr 11, 2024 at 04:52 PM.
Le Mans Master
Joined: Feb 2021
Posts: 6,349
Likes: 4,133
From: Florida
2025 Corvette of the Year Finalist - Unmodified
2024 C5 of the Year Winner- Unmodified
2022 C5 of the Year Finalist - Unmodified
Based on several threads posted here previously, I bit the bullet and went with NAPA knock sensors and NAPA replacement harness. So far, about 2000 miles since then and no errors and no codes. I also mad sure to RTV the knock sensor covers to prevent water intrusion and subsequent corrosion. I also think my first detailed engine cleaning after I received the car caused my Knock Sensor failure.
Thread Starter
Racer
Joined: Feb 2023
Posts: 307
Likes: 50
I just installed ACDelco knock sensors and Dorman wiring harness. So far, so good. The ACD’s are expensive but get excellent reviews. The Dorman harness looked fine to me.
Knock sensors
https://www.summitracing.com/parts/ADO-213-3521
Wiring harness
https://www.summitracing.com/parts/RNB-917-033
Valley pan:
Fel-Pro MS92465 Engine Intake Manifold Gasket https://a.co/d/aerF6SR
Intake manifold:
ICT Billet LS1 LS6 FAST LSX Intake Manifold Seal Oring Gasket Set Compatible with Camaro Corvette LS GTO LM7 LR4 LQ4 L59 LQ9 LM4 L33 Gen III FBody C5 G8 551281 https://a.co/d/4FpqZyC
- or -
FEL-PRO MS 92438 Intake Manifold Gasket Set https://a.co/d/gLeAzGA
Knock sensors
https://www.summitracing.com/parts/ADO-213-3521
Wiring harness
https://www.summitracing.com/parts/RNB-917-033
Valley pan:
Fel-Pro MS92465 Engine Intake Manifold Gasket https://a.co/d/aerF6SR
Intake manifold:
ICT Billet LS1 LS6 FAST LSX Intake Manifold Seal Oring Gasket Set Compatible with Camaro Corvette LS GTO LM7 LR4 LQ4 L59 LQ9 LM4 L33 Gen III FBody C5 G8 551281 https://a.co/d/4FpqZyC
- or -
FEL-PRO MS 92438 Intake Manifold Gasket Set https://a.co/d/gLeAzGA
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Instructor
Joined: Apr 2023
Posts: 131
Likes: 25
Based on several threads posted here previously, I bit the bullet and went with NAPA knock sensors and NAPA replacement harness. So far, about 2000 miles since then and no errors and no codes. I also made sure to RTV the knock sensor covers to prevent water intrusion and subsequent corrosion. I also think my first detailed engine cleaning after I received the car caused my Knock Sensor failure.
There are two on the NAPA website, do you know which one you used?
Part #: ECH DKS238K - Line: Echlin Ignition - $173 - https://www.napaonline.com/en/p/ECHD...ppid=NOE926084
Part #: NOE 926084 - Line: NAPA Solutions - $96 - https://www.napaonline.com/en/p/NOE9...pid=ECHDKS238K
I'll still get the intake manifold gasket from RockAuto. Mine has the LSX intake, I'm assuming it is the same gasket?
Instructor
Joined: Jun 2020
Posts: 116
Likes: 54
From: Colorado Springs
Not sure of the part numbers, but I do remember that they were both in boxes marked with Echlin, a brand name of NAPA.
Good luck. About 8k miles with another engine wash in the fall and still no error codes. Good knock sensors with RTV around the covers -- and you are good to go !
BTW -- adding a small length of vacuum hose to the MAP sensor nipple makes the intake manifold re-installation less of a pain.
Good luck. About 8k miles with another engine wash in the fall and still no error codes. Good knock sensors with RTV around the covers -- and you are good to go !
BTW -- adding a small length of vacuum hose to the MAP sensor nipple makes the intake manifold re-installation less of a pain.
Instructor
Joined: Apr 2023
Posts: 131
Likes: 25
Not sure of the part numbers, but I do remember that they were both in boxes marked with Echlin, a brand name of NAPA.
Good luck. About 8k miles with another engine wash in the fall and still no error codes. Good knock sensors with RTV around the covers -- and you are good to go !
BTW -- adding a small length of vacuum hose to the MAP sensor nipple makes the intake manifold re-installation less of a pain.
Good luck. About 8k miles with another engine wash in the fall and still no error codes. Good knock sensors with RTV around the covers -- and you are good to go !
BTW -- adding a small length of vacuum hose to the MAP sensor nipple makes the intake manifold re-installation less of a pain.
Thank you for the tip, I'll grab some scrap tubing from work!