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Choose from top brands including: ReplacementStandard Motor ProductsBeck ArnleyBoschDelphiGenuineAC DelcoAPIGPDDIY SolutionsVemoWalker

Knock SensorOne important factor in rating any car is fuel economy. As fuel prices rise across the nation, the last thing you want is for your car to be gobbling any more fuel than is necessary. As a general rule, then, it?s important to ensure that the elements of your car that impact fuel economy are in good repair. One such component is the engine knock sensor, which is partially responsible for ensuring that the engine and fuel delivery systems are timed properly and that the fuel/air mixture being sent to the engine is correct. The job of the sensor is to prevent fuel from detonating in the cylinder rather than burning quickly. A good sensor will improve your fuel economy by ensuring that fuel in your engine cylinders is used properly ? while a bad sensor will cripple your fuel economy by allowing your engine to work in a way that is rather detrimental to overall function and economy. To keep your vehicle?s fuel economy high, take care that you use the best parts for your repairs and maintenance. A great place to find the parts you need is online at PartsGeek.com, where you?ll be able to access a great selection of parts at unbeatable prices.

Replacement Knock Sensors

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Review Fitment Notes
Replacement Knock Sensor - for 2000 Nissan Xterra XE 2.4L 4 Cyl - 927-102 Click to Enlarge
4.9 Stars
Replacement 927-102
Knock Sensor
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Part Number: 927-102
Brand: Replacement
Notes: Ignition Knock (Detonation) Sensor
Product Remark: With 14 Inch Wiring Harness
Condition: New
Shipping Options: Free Ground Shipping
$20.95
with FREE Shipping
(99) In Stock
This Part Fits:
Catalog: E
Vehicle Sub Model Engine
2000 Nissan Xterra XE 2.4L 4 Cyl
Standard Motor Products Knock Sensor - for 1991 Toyota 4Runner 3.0L V6 - KS95 Click to Enlarge
Website Reviews
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Part Number: KS95
Brand: Standard Motor Products
Notes: Ignition Knock (Detonation) Sensor
Condition: New
Shipping Options: Ground
$118.43
(46) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1991 Toyota 4Runner 3.0L V6
MTC Knock Sensor - for 1997 Nissan Maxima - W0133-1626169 Click to Enlarge
4.9 Stars
MTC W0133-1626169
Knock Sensor
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Part Number: W0133-1626169
Brand: MTC
  • OEM quality direct fit application
  • Ground-isolated design with two-wire shielded harness helps protect the sensor signal from electro-magnetic interference (EMI)
  • Mounting hole is the same size as OE
  • Maintains OE specifications for frequency response
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$286.48
Our Price: $36.58
(21) In Stock
This Part Fits:
Catalog: A
Vehicle
1997 Nissan Maxima
Beck Arnley Knock Sensor - for 2000 Toyota Avalon 3.0L V6 - 158-0780 Click to Enlarge
5 Stars
Beck Arnley 158-0780
Knock Sensor
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Part Number: 158-0780
Brand: Beck Arnley
Notes: Ignition Knock (Detonation) Sensor
  • Matches OE form, fit and function
  • Includes corrosion resistant terminals and coatings
  • Sensor is mounted in cylinder block
  • Constructed to withstand an underhood environment
  • Application specific for this vehicle
Condition: New
Shipping Options: Ground
$93.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2000 Toyota Avalon 3.0L V6
Bosch Knock Sensor - for 1995 BMW 318i - W0133-1613866 Click to Enlarge
Website Reviews
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Part Number: W0133-1613866
Brand: Bosch
Notes: 0.261.231.072
  • High Precision Even under Extreme Conditions
  • Improved efficiency and prolonged engine life
  • Linear signal over large frequency range
Condition: New
Shipping Options: Ground, Overnight, 2 Day
OEM
List Price:
$101.58
Our Price: $61.58
(4) In Stock
This Part Fits:
Catalog: A
Vehicle
1995 BMW 318i
Delphi Knock Sensor - for 2005 Chevrolet Silverado 1500 6.0L V8 - AS10017 Click to Enlarge
4.9 Stars
Delphi AS10017
Knock Sensor
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Part Number: AS10017
Brand: Delphi
Notes: Ignition Knock (Detonation) Sensor
  • 100 years of OE experience, supplier to the world's top automakers, OE Heritage and knowledge built into every aftermarket part.
  • Delphi knock sensors help maximize engine performance with all fuels
  • Delphi knock sensors prevent against engine damage from pre-ignition knocking
  • Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
  • Ground-isolated design with 2-wire shielded harness helps protect the sensor signal from electro-magnetic interference (EMI)
  • Self-generating piezoelectric design requires no power to the sensor
Condition: New
Shipping Options: Ground
$48.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2005 Chevrolet Silverado 1500 6.0L V8
Genuine Knock Sensor - for 1999 Jaguar XJ8 - W0133-1657696 Click to Enlarge
5 Stars
Genuine W0133-1657696
Knock Sensor
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Part Number: W0133-1657696
Brand: Genuine
Notes: Engine Side - Retained with stud and nut
  • OES quality direct fit application
  • Ground-isolated design with two-wire shielded harness helps protect the sensor signal from electro-magnetic interference (EMI)
  • Mounting hole is the same size as OE
  • Maintains OE specifications for frequency response
Condition: New
Shipping Options: Ground, Overnight, 2 Day
OEM
List Price:
$142.75
Our Price: $117.58
(32) In Stock
This Part Fits:
Catalog: A
Vehicle
1999 Jaguar XJ8
AC Delco Knock Sensor - for 2004 Chevrolet Silverado 1500 4.8L V8 VIN: V - 213-3521 Click to Enlarge
5 Stars
AC Delco 213-3521
Knock Sensor
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Part Number: 213-3521
Brand: AC Delco
Notes: GM Original Equipment -- New
  • Sends signals to the engine control module (ECM) to adjust timing
  • Helps prevent damage to the engine caused by pre-ignition
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
Condition: New
Shipping Options: Ground
$52.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Chevrolet Silverado 1500 4.8L V8 VIN: V
Bosch Knock Sensor - for 1998 BMW 540i - 12 14 1 741 648 Click to Enlarge
5 Stars
Bosch 12 14 1 741 648
Knock Sensor
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Part Number: 12 14 1 741 648
Brand: Bosch
Notes: Knock Sensor (Ping Sensor) -- thru 08/97
Condition: New
Shipping Options: Ground
$49.73
(23) In Stock
This Part Fits:
Catalog: G
Vehicle
1998 BMW 540i
Bosch Knock Sensor - for 1999 Nissan Maxima 3.0L V6 - 64621 Click to Enlarge
Website Reviews
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Part Number: 64621
Brand: Bosch
Notes: Ignition Knock (Detonation) Sensor -- New
Condition: New
Shipping Options: Ground
$78.08
(8) In Stock
This Part Fits:
Catalog: H
Vehicle Engine
1999 Nissan Maxima 3.0L V6
NGK Knock Sensor - for 2000 Toyota 4Runner 2.7L 4 Cyl - ID0165 Click to Enlarge
Website Reviews
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Part Number: ID0165
Brand: NGK
Notes: NTK Ignition Knock (Detonation) Sensor
  • NTK's Ignition Knock Sensors are manufactured to operational performance standards to meet or exceed OE fit, form and function to ensure proper ignition timing. This advanced technology is used for durability, drivability and fuel economy.
  • The Ignition Knock (Detonation) Sensor monitors vibrations caused by engine knock, or detonation, to alter the ignition timing and prevent detonation.
  • Reinforced and extra-strength components are used to reduce chance of part failure and prevent corrosion and moisture penetration. Mounting threads match OE for easy, worry free installation. Backed by a 3 year/36,000-mile warranty.
Condition: New
Shipping Options: Ground
$149.98
(2) In Stock
This Part Fits:
Catalog: C
Vehicle Engine
2000 Toyota 4Runner 2.7L 4 Cyl
Hitachi Knock Sensor - for 2004 Nissan Frontier SVE 3.3L V6 - KNS0003 Click to Enlarge
5 Stars
Hitachi KNS0003
Knock Sensor
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Part Number: KNS0003
Brand: Hitachi
Notes: Ignition Knock (Detonation) Sensor -- Actual OE; Terminal Quantity: 2; Connector Gender: Male; Terminal Type: Blade
Condition: New
Shipping Options: Ground
$43.98
(16) In Stock
This Part Fits:
Catalog: T
Vehicle Sub Model Engine
2004 Nissan Frontier SVE 3.3L V6
API Knock Sensor - for 2002 Honda Accord SE 2.3L 4 Cyl - 1904-300249 Click to Enlarge
Website Reviews
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Part Number: 5985-07927315
Brand: API
Notes: Ignition Knock (Detonation) Sensor
Condition: New
Shipping Options: Ground
$26.98
(71) In Stock
This Part Fits:
Catalog: P
Vehicle Sub Model Engine
2002 Honda Accord SE 2.3L 4 Cyl
DIY Solutions Knock Sensor - for 2002 Honda Accord 2.3L 4 Cyl - ESS00359 Click to Enlarge
5 Stars
DIY Solutions ESS00359
Knock Sensor
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Part Number: ESS00359
Brand: DIY Solutions
Notes: Ignition Knock (Detonation) Sensor -- L4 2.3L
Condition: New
Shipping Options: Free Ground Shipping
$24.95
with FREE Shipping
(20) In Stock
This Part Fits:
Catalog: Q
Vehicle Engine
2002 Honda Accord 2.3L 4 Cyl
Brock Knock Sensor - for 2002 Honda Accord SE FWD 2.3L 4 Cyl Naturally Aspirated SOHC GAS - Coupe 2dr - 7984-0006 Click to Enlarge
5 Stars
Brock 7984-0006
Knock Sensor
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Part Number: 7984-0006
Brand: Brock
Notes: Ignition Knock (Detonation) Sensor -- 98-02 Honda Accord 2.3L Knock Sensor 97-01 Honda Prelude 98 Odyssey 02-03 Civic 1.7L 98-99 Acura CL 2.3L 98-99 Isuzu Oasis
Condition: New
Shipping Options: Free Ground Shipping
$17.98
with FREE Shipping
(43) In Stock
This Part Fits:
Catalog: K
Vehicle Sub Model Body Engine
2002 Honda Accord SE FWD Coupe 2dr 2.3L 4 Cyl Naturally Aspirated SOHC GAS
Standard Motor Products Knock Sensor - for 1999 Nissan Maxima 3.0L V6 - KS79 Click to Enlarge
Website Reviews
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Part Number: KS79
Brand: Standard Motor Products
Notes: Ignition Knock (Detonation) Sensor
Condition: New
Shipping Options: Ground
$35.98
(2) In Stock
This Part Fits:
Catalog: N
Vehicle Engine
1999 Nissan Maxima 3.0L V6

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An AC Delco Knock Sensor is a part that checks your motor's ignition system.

AC Delco AC Delco Knock Sensor

Utilize PartsGeek any time you require the best quality auto and truck parts such as the AC Delco knock sensor. Successful automobile manufacturers know the inherent importance of high performance. Excellent power and road performance depend on first-rate components and accessories. If you bought that high-performance car or truck because it had high-end engine power and performance, insure your decision by using outstanding replacement parts and accessories. The knock sensor changes the engine's RPM idling speed as necessary to combat motor knock. The knock sensor makes certain your car's running at maximum performance for the lowest amount of gas. Knock sensors operate with a computer to check ignition timing constantly in order to guard against engine ping, which can cause harm. The knock sensor is a mechanism that lets the motor to run at its best and reduces gas consumption.

The task of your Beck Arnley Knock Sensor is to keep track of the engine timing for best operation.

Beck Arnley Beck Arnley Knock Sensor

Utilize www.PartsGeek.com whenever you want the best quality car and truck parts like the Beck Arnley knock sensor. A high-performance vehicle requires the most high-end parts you can find. Invest in your vehicle's critical systems by purchasing only the ultimate in quality engine parts. Bestselling carmakers grasp the basic importance of high performance. The knock sensor makes certain that you're operating at its highest level of power for the minimal amount of fuel. Knock sensors work with computer hardware to monitor spark timing continuously so as to prevent motor ping, which may cause problems. By monitoring your engine's timing, the knock sensor makes sure of optimal performance for all circumstances. Having a good working knock sensor installed enables you to monitor the timing of your cylinders.

The task of your Bosch Knock Sensor is to watch the spark timing for peak operation.

Bosch Bosch Knock Sensor

The parts you need, like a Bosch knock sensor, are only a click away when you get them from PartsGeek. Your car or truck is an investment because it has high performance and great style, and to have it purring along in top form you need the ultimate in replacement parts. A car's performance is a composite of many factors including quality parts. A When you drive a high-performance vehicle it needs the highest quality replacement parts. The knock sensor is a mechanism that makes it possible for your car's motor to operate at optimal range and lessens gasoline consumption. The knock sensor makes certain your cars getting its highest level of performance for the least amount of fuel. Putting a functional knock sensor installed allows you to monitor the firing of the cylinders. The knock sensor alters the engine's RPM idling speed in an attempt to compensate for motor knock.

Keeping a quality Delphi Knock Sensor on your vehicle permits you to monitor the timing of the cylinders.

Delphi Delphi Knock Sensor

Use PartsGeek every time you want high quality car and truck parts such as the Delphi knock sensor. Preserve your car's critical systems by buying only the most reliable top-notch engine parts. It doesn't matter if you race competitively or just appreciate driving a performance vehicle, the highest quality parts are critical. Auto enthusiasts who thrill over performance car or trucks know that nothing is more important than getting the best new parts and accessories. The knock sensor changes an engine's RPM idle rate as needed to combat engine knock. Knock sensors function with a computer chip to monitor ignition timing constantly so as to avoid motor knock, which may cause harm. The knock sensor makes certain your vehicles obtaining its highest level of power for the lowest volume of gasoline. A dependable knock sensor installed enables you to monitor the timing of the vehicle's spark plugs.

By constantly checking your vehicle's ignition timing, the Standard Knock Sensor makes for efficient performance at all times.

Standard Standard Knock Sensor

Utilize www.partsgeek.com any time you want top quality automotive parts like the Standard knock sensor. Whether you race competitively or just appreciate driving a high-performance vehicle, the best quality parts are vital. Your car or truck has a place in your heart because of its excellent performance and awesome style, so to have it running in top condition you need the best in high-quality parts and accessories. To raise the horsepower of your automobile's engine, install a selection of these optional components that are specially built to raise performance. Keeping a dependable knock sensor on your vehicle enables you to monitor the timing of the vehicle's cylinders. Your automobile's knock sensor varies an engine's RPM idle rate faster or slower to combat engine knock. The knock sensor is a part that allows your motor to operate at optimal range while it cuts back fuel expenditure. Knock sensors function with computer hardware to monitor spark timing constantly in order to avoid engine ping, which might cause harm. When you want a Standard knock sensor, fixing your beloved car or truck with superior parts always pays off every single time.

Putting a quality VDO Knock Sensor installed permits you to keep track of the firing of the vehicle's cylinders.

VDO VDO Knock Sensor

Every car or truck will require replacement components from time to time, so when you need a VDO knock sensor, PartsGeek is the place to find all the parts you could need. Take your automobile to a superior level of performance with performance components. No matter if you race or just take joy in driving a performance vehicle, top quality parts are vital. Superior motoring is a breeze with factory authorized equipment made to operate with the fuel system and front end components. A dependable knock sensor in place permits you to watch the timing of your ignition system. A knock sensor changes the motor's RPM idle speed faster and slower to eliminate engine knock. The knock sensor makes certain that you're operating at its highest level of power for the least amount of gasoline. By monitoring your car's ignition timing, the knock sensor makes for efficient performance for all circumstances.

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A flashing check engine light, a sputtering engine, a noticeable drop in fuel economy and poor engine performance are all important potential signs of a faulty knock sensor. While this auto part may be small, it is essential for monitoring the combustion process and regulating the fuel delivery system. Luckily, engine sensors are fairly inexpensive and easily replaced.

On PartsGeek.com you will find a huge selection of knock sensors for just about every auto out there. We carry products from top brands like AC Delco, Bosch and Genuine, as well as plenty of options for original equipment and original equipment equivalent parts.

Find a specific sensor using the search function, or browse our parts library by make or year. We take pride in the quality of our selection, our excellent customer service and quick delivery. And, our 30-day return policy helps guarantee that you get the part you need to get driving again.

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An auto's knock sensor is important for ensuring the proper functioning of the fuel delivery system. These engine sensors can detect sub-audible knocking that may be an indicator that the combustion process is not taking place as it should. When the knock sensor picks up abnormal pings or knocking, it communicates with the onboard computer. In turn the computer slows engine timing in order to prevent potentially damaging pre-ignition. A sensor that is working as it should helps to maintain good fuel economy and engine performance.

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Most knock sensors fall within the price range of $50 and $200. Cost will depend on a variety of factors, especially the specific make and model of your car. You should be able to find both OE (original equipment) and OE equivalent sensors.

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The most obvious signs of potential knock sensor failure are unusual engine sounds, diminished fuel economy and sluggish acceleration. These will be especially noticeable when traveling at highway speeds, hauling a heavy load, or at other times when the engine is under extra duress. The knocking, sputtering or pounding that may occur are caused by pre-ignition: the combustion of fuel within the cylinders.

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Unfortunately, by the time a faulty knock sensor becomes obvious, it's already past time to replace the part. To prevent waiting too long, you can easily test your sensor using a multimeter or voltmeter to detect electrical continuity.

Shop Popular Models
Some of our Customer Reviews
5 of 5
Verified Customer
4/8/13 12:32 PM - USA

Product works great and is relatively easy to install once you remove the air filter housing. You do need a long socket extension to reach the bolt from the top of the engine though. I used a long one and short one to be able to turn the bolt. - John N

- 2001 Kia Rio Knock Sensor
5 of 5
Verified Customer
4/4/13 04:03 AM - USA

Awesome product and fast shipping. I'm really happy with this site. - J's

- 2000 BMW 540i Knock Sensor
5 of 5
Verified Customer
5/29/13 01:53 AM - USA

The parts are great - tfurrerM3

- 1994 BMW 325i Knock Sensor
5 of 5
Verified Customer
6/5/13 07:51 PM - USA

Always the exact fit for a really low price - deathproof

- 1997 Nissan Altima Knock Sensor
5 of 5
Verified Customer
6/8/13 03:12 PM - USA

best auto part price's by far - mark

- 1998 Nissan Altima Knock Sensor
5 of 5
Verified Customer
6/11/13 12:11 AM - USA

This sensor looks just like the stock one I pulled out and has thus far after 4 hours of driving got rid of the check engine light, at first i didnt know if the code from the check engine light ment my car was knocking or if the sensor was bad i waited a couple weeks and the light check engine light would keep showing its face, replacing the sensor did it - Rphuggen0627

- 2000 Subaru Outback Knock Sensor