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Acura Legend Knock Sensors

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Knock Sensor, Screw-In Mounting Type
Part Number: REPA311203
Vehicle Info Required to Guarantee Fit
$15.28
Product Details
Notes : Screw-in mounting type; Without wiring harnessConfiguration : 1-Prong Blade Male Terminal; 1 Female ConnectorReplaces OE Number : 72960, 144740, 170722, 716505, 1581080, 2131822, 2421036, 89052890, 2KNC0052, 30530PR7A01, 5S2139, AS10089, DKS511, ID0088, S8613, SBC3837, SU4777Quantity Sold : Sold individuallyWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Phthalates, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : KS92, 72960, 144740, 170722, 716505, 1581080, 2131822, 2421036, 89052890, 2KNC0052, 30530PR7A01, 5S2139, AS10089, DKS511, ID0088, S8613, SBC3837, SU4777Returns Policy : 30-Day Return Policy
Knock Sensor, Screw-In Mounting Type
Part Number: SET-REPA311203-2
Vehicle Info Required to Guarantee Fit
$21.99
Product Details
Notes : Screw-in mounting type; Without wiring harnessComponents : (2) Knock SensorsConfiguration : 1-Prong Blade Male Terminal; 1 Female ConnectorReplaces OE Number : 72960, 144740, 170722, 716505, 1581080, 2131822, 2421036, 89052890, 2KNC0052, 30530PR7A01, 5S2139, AS10089, DKS511, ID0088, S8613, SBC3837, SU4777Quantity Sold : Set of 2Warranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Phthalates, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : KS92, 72960, 144740, 170722, 716505, 1581080, 2131822, 2421036, 89052890, 2KNC0052, 30530PR7A01, 5S2139, AS10089, DKS511, ID0088, S8613, SBC3837, SU4777Returns Policy : 30-Day Return Policy
UBA1581080 Knock Sensor
Part Number: BEC1581080
Vehicle Info Required to Guarantee Fit
$83.49
Product Details
Location : Passenger SideQuantity Sold : Sold individuallyWarranty : 1 year or 12,000-mile Beck Arnley limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

1811806 Knock Sensor
Part Number: GPD1811806
Vehicle Info Required to Guarantee Fit
$26.49
Product Details
Location : Passenger SideQuantity Sold : Sold individuallyWarranty : 1 year GPD limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

KS92 Standard OE Replacement Knock Sensor
Part Number: SIKS92
Vehicle Info Required to Guarantee Fit
$85.99
Product Details
Replaces OE Number : 72960, 144740, 170722, 716505, 1581080, 2131822, 2421036, 89052890, 2KNC0052, 30530PR7A01, 5S2139, AS10089, DKS511, ID0088, S8613, SBC3837, SU4777Quantity Sold : Sold individuallyWarranty : 3-year or 36,000-mile Standard limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Standard OE ReplacementInterchange Part Number : REPA311203, 72960, 144740, 170722, 716505, 1581080, 2131822, 2421036, 89052890, 2KNC0052, 30530PR7A01, 5S2139, AS10089, DKS511, ID0088, S8613, SBC3837, SU4777
242-1036 Knock Sensor
Part Number: 2421036
Vehicle Info Required to Guarantee Fit
$76.99
Product Details
Location : Passenger SideNotes : 49.8 mm Length; (1) Male Blade Terminal; (1) Female Round ConnectorQuantity Sold : Sold individuallyWarranty : 90-day Walker Products limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Page 1 of 1 | Showing 1 - 6 of 6 results

Top Rated Products

OE fit,part is hard to find since age of car so finding was a blessing
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Part was OE and worked as designed. Saved $70 by purchasing with Carparts as local paSee More
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Popular Products

Knock Sensor, Screw-In Mounting Type
Part No: REPA311203
( Review)
$15.28
UBA1581080 Knock Sensor
Part No: BEC1581080
( Review)
$83.49
1811806 Knock Sensor
Part No: GPD1811806
( Review)
$26.49
242-1036 Knock Sensor
Part No: 2421036
( Review)
$76.99

Customer Guides

Stopping Engine Knocks: Troubleshooting Your Acura Legend Knock Sensor

A knock sensor's main function is a no-brainer-it senses bad knocks in your engine. This so-called listening device detects engine noises and vibrations caused by detonation, so expect your Acura to perform poorly when it goes bad. Detonation, when not properly addressed, can significantly decrease engine power and fuel mileage. It's the knock sensor's job to alert the ECU when detonation occurs so that ignition timing can be adjusted properly and engine efficiency can be restored. Like all other sensors in your Acura, the knock sensor may also wear out and malfunction over time. If you're having problems with your Acura Legend knock sensor lately, it would be best to perform some troubleshooting to save your engine from further damage. Below is a guide to help you out:

Decreased engine RPM

If you're experiencing slower engine acceleration, one of the probable culprits is a knock sensor with a wiring short. A faulty circuit can affect and slow down the engine's revolutions per minute, resulting in loss of vehicle power. To check the knock sensor for bad circuit, perform a visual inspection on the connected wires. Have a mechanic test broken or frayed wires against normal generated resistance and compare the readings with the sensor's factory specifications. If the readings do not meet the specs of your Acura Legend knock sensor, then you must replace these faulty wires right away to restore acceleration power.

Knocking noises

A bad knocking sensor will produce knocking or pounding noises in the engine that becomes louder and more noticeable over time. The noise can be heard under the hood when you're going at high speeds, and it usually comes with vibrations. Engine knock can be severely damage several crucial components, including spark plugs, pistons, gaskets, valves, and connecting rods. Aside from wreaking havoc in your engine compartment, engine knock can also decrease your vehicle's fuel mileage. To test the knocking sensor for damage, hit the intake manifold using a crescent wrench. The manifold's located at the center of your engine, right above the knock sensor. By striking the manifold, you'll create a detonation that should cause the knock sensor to adjust the timing. The engine will then make the necessary adjustment and create a sound different from the one it usually produces. If you don't hear any difference, your knock sensor is indeed faulty and should be replaced immediately.

Many engine problems are often nipped in the bud before they worsen due to the collective effort of various electronic sensors. These devices transmit signals and pieces of useful information to the ECU in order to regulate crucial operations in your vehicle. If these sensors become faulty, the ECU won't be given accurate information, causing some or most engine operations to cease functioning properly. Your Acura Legend knock sensor plays an important role in keeping one of the most crucial operations in your engine running smoothly-the combustion process. Often referred to as a listening device, a knock sensor enables the engine to achieve optimum combustion by detecting detonation vibrations and noises. It helps the ECU adjust ignition timing properly to prevent detonation from dealing irreversible damage to the engine, so keeping it in tiptop shape is important. We've listed a couple of maintenance tips to help you out.


Use the right octane fuel.


A well-maintained knock sensor can maximize your vehicle's fuel efficiency and help you save gas money. This won't be the case if you're using the wrong octane. Not following your vehicle manufacturer's instructions in the right type of gas will not only jeopardize the knock sensor's performance, but also hamper your engine's smooth operation. In most cases, all internal engine components will be severely affected when wrong octane is used. Even if it may put a strain on your pocket, always use the right octane fuel to prevent any knock sensor-related problems.


Replace faulty wires and cracked seals.


Your Acura Legend knock sensor may cease to operate properly if its wires and seals are damaged. Perform routine inspections on the sensor's wiring to check for frayed, loose, or defective wires. If you think your knock sensor has a bad circuit or a wiring short, have a mechanic test the wiring and compare the readings with the sensor's factory specs. Get replacements if necessary to maintain the sensor's performance. Cracked or dried out seals should also be replaced to prevent moisture from entering the sensor and causing wiring short.

Helpful Automotive Resources

P0334 Code: Knock Sensor 2 Circuit Intermittent (Bank 2)
P0334 Code: Knock Sensor 2 Circuit Intermittent (Bank 2)Diagnostic trouble code (DTC) P0334 stands for “Knock Sensor 2 Circuit Intermittent Bank 2.” The code is set once the powertrain control module (PCM) doesn’t receive the right signal from the knock sensor located in Bank 2.
8 of the Most Important Car Sensors You Should Know About
8 of the Most Important Car Sensors You Should Know AboutThese sensors also play an important role in optimizing your vehicle’s overall performance. They help the PCM adjust the fuel mixture and regulate ignition timing, among other things. The Most Common Types of Car Sensors
P0326 Code: Knock Sensor 1 Circuit Range / Performance Bank 1
P0326 Code: Knock Sensor 1 Circuit Range / Performance Bank 1Knocking refers to the unwanted vibration and noise that could damage an engine. This is typically the result of fuel with too low of an octane rating, overly advanced ignition timing, or extreme engine operating temperatures. The PCM may also perceive an internal engine problem, such as a failed rod