This replacement Engine Knock (Detonation) Sensor is just what you need to get your vehicle in good running order again!

A knock sensor is like a small electronic microphone that is usually attached to the engine block and listens for a couple of things that a engine might do. One thing it listens for is pre-ignition or knocking inside the engine usually caused by a few issues including dirty gas, wrong engine timing low octane fuel, and also by the wrong spark plugs. It also listens for engine run on which happens when the vehicle is turned off, but tries to keep running until it stalls. Once a noise is detected, the knock sensor sends a signal to the cars computer which in turn will retard the timing at 2 degree intervals until it corrects the issue. If the knock sensor fails, it can seriously damage the engine, as continuous pre-ignition can cause fracture in the pistons.

This knock sensor features the following specifications:

  • 100% New not remanufactured
  • Replaces dealer part numbers: 30530-P5M-013, 30530P5M013
  • Mounts to engine block
  • Built to strict quality control standards
  • Some models may use more then one
  • Mounting type: Screw in
  • Number of Terminals: (1)

This Engine Knock Sensor makes a great replacement and has good cost savings over a dealer unit.

Our electrical and electronic parts are subject to strict quality control testing .  Once the item has been installed or plugged in, it is no longer eligible for a refund.  The item may be eligible for replacement, only if it is found to have a manufacturing defect. Before purchasing, please ensure proper diagnosis of the failed original part is performed

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

5.0 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Works perfectly
Very good fit and works perfectly, my 1998 honda runs like new now
February 20, 2017
1 year ago
knock sensor
Delivered quickly, was able to use a deep socket to install, clicked in wiring and moved on. As long as it does what it is supposed to, I'm happy.
July 9, 2017
8 months ago
Worked great. Fit great. Check engine light stayed off.
Knock sensor fit 199 Accord 4cyl great and saved us a bunch of money too.
January 22, 2017
1 year ago
Great price and good quality! Got rid of the code right away!
July 12, 2017
7 months ago
Worked great.
Much better part than some cheapies I tried first that failed after a week or two. Sorry 1AAUTO, I’ll never do that again.
October 20, 2017
4 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!

Vehicle Fit

  • 1998-1999 Acura CL Engine Knock Sensor L4 2.3L
  • 1998-2002 Honda Accord Engine Knock Sensor L4 2.3L
  • 2002-2003 Honda Civic Engine Knock Sensor L4 1.7L
  • 1998-1999 Honda Odyssey Engine Knock Sensor L4 2.3L
  • 1997-1999 Honda Prelude Engine Knock Sensor L4 2.2L
  • 2000-2001 Honda Prelude (Engine ID BB6) Engine Knock Sensor L4 2.2L
  • 1998-1999 Isuzu Oasis Engine Knock Sensor L4 2.3L
Part #: 1AEKS00004

Ships Same Day for orders placed by 4 P.M. ET

We're here to help

1A Auto Parts

Customer Feedback

"Thanks for the fast reliable service. Great price, and the headlights were as good as oem or better!!! Keep up the good work..."
- Dwuan M.
Read More