ACURA 81PSCB49 Knock Sensor

( Manufacturer Part Number: 81PSCB49 ), ( Type: Knock Sensor ), ( Fits 1: 1996-1999 Acura Slx ), ( Fit Note: Ignition Knock ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Please Read All Notes To Confirm Fitment ), ( Cs-sku: 400 )

Review ACURA Replacement Knock Sensor fits SLX 1996–1999

The 81PSCB49 Knock Sensor, manufactured by Denso, is an essential component of the engine management system in select Acura SLX models from 1996 to 1999. This knock sensor is engineered to detect subtle vibrations and irregularities in an engine's operation, ensuring optimal engine performance and longevity.

The 81PSCB49 is a compact, cylindrical device, measuring approximately 2 inches in length and 1 inch in diameter. It is mounted on the engine block near the crankshaft, utilizing a threaded connection for secure installation. The sensor is designed to be sensitive to engine knock, a condition characterized by abnormal combustion occurring within the engine cylinders.

The knock sensor employs a piezoelectric element that converts mechanical energy into electrical energy when it detects engine knock. This electrical signal is then transmitted to the engine control module (ECM), which analyzes the data and adjusts engine parameters accordingly. These adjustments can include fuel injection timing, ignition timing, and engine load to help eliminate the knocking noise and maintain ideal engine operation.

The 81PSCB49 knock sensor is designed to function reliably under various driving conditions, including cold starts and high engine loads. Denso, a renowned manufacturer of automotive parts, ensures that this knock sensor is built to the highest standards of quality and durability.

When replacing the knock sensor, it is essential to use an OEM (original equipment manufacturer) part like the 81PSCB49 to maintain the performance and reliability of your Acura SLX. Installing a non-OEM part may result in inaccurate engine knock detection, leading to potential engine damage or poor fuel economy.

In summary, the 81PSCB49 Knock Sensor by Denso is a critical component in maintaining the performance and longevity of your Acura SLX engine. Designed to detect engine knock and transmit accurate data to the engine control module, this sensor ensures optimal engine operation under various driving conditions. With its high-quality construction and OEM design, the 81PSCB49 is the ideal choice for Acura SLX owners seeking reliable engine performance.

Buying an 81PSB49 knock sensor for a 1996, 1997, 1998, or 1999 Acura SLX can be a valuable investment for maintaining your vehicle's engine health. A knock sensor is a crucial component of the engine management system, responsible for detecting and reducing engine knocking or pinging. However, like any automotive part, it comes with advantages and disadvantages.

1. Improved engine performance: A faulty or malfunctioning knock sensor can lead to poor engine performance, rough idling, and even engine damage. Replacing the sensor with a new one can help restore optimal engine performance.

2. Enhanced fuel efficiency: A properly functioning knock sensor ensures the engine runs efficiently, which can help improve fuel economy.

3. Longer engine life: By detecting and addressing engine knocking early, you can help prevent more significant engine damage and extend the life of your engine.

1. Cost: The cost of purchasing a new 81PSB49 knock sensor can vary depending on the seller, but it is generally an affordable part. However, if you are on a tight budget, the cost might be a concern.

2. Installation time: Installing the new knock sensor yourself requires some mechanical knowledge and tools. If you are not comfortable doing it yourself, you will need to pay for professional installation, which can add to the overall cost.

3. Potential for other engine issues: A knocking sound in the engine could be caused by other issues besides a faulty knock sensor. Before assuming the sensor is the culprit, it's essential to have the vehicle diagnosed by a professional to rule out other potential problems.

In conclusion, buying an 81PSB49 knock sensor for your 1996, 1997, 1998, or 1999 Acura SLX can be a worthwhile investment in maintaining the health and performance of your engine. The advantages of improved engine performance, enhanced fuel efficiency, and longer engine life outweigh the disadvantages, which include the cost and potential for other engine issues. If you suspect a faulty knock sensor, it's best to have your vehicle diagnosed by a professional to determine if this is the root cause of the issue.

My recommendation would be to consider purchasing a new 81PSB49 knock sensor if you have a diagnosed faulty sensor or are experiencing engine knocking. Ensure you have the necessary tools and knowledge to install the sensor yourself or budget for professional installation. By addressing this issue promptly, you can help prevent further engine damage and save yourself from potential costlier repairs down the line.

Details:

Knock Sensor 81PSCB49 for Acura SLX 1996 1997 1998 1999: Brand: Replacement condition: New, Notes Ignition Detonation Sensor, Detailed Applications Vehicle, 1996 - 1999. 12 Month Warranty.

part #: 81pscb49 prices

• $15.99-$49.20

specifications acrasensor:

• for models: Slx
• for makes: Acura
• for years: 1996-1999
• mpn: 81pscb49
• type: Knock Sensor
• fits 1: 1996-1999 Acura Slx
• fit note: Ignition Knock
• manufacturer warranty: 12 Month Warranty
• attention: Please Read All Notes To Confirm Fitment
• cs-sku: 400

offer acrasensor:

• started: October 15, 2025
• quantity: 1
• sold: 0
• availability: In Stock
• options: Ship-to-home

shipping acrasensor:

• type: Fixed
• transit: 3-7 Days
• class: Standard
• cost: $0.00
• service: Standard

general acrasensor:

• Car Truck Parts Accessories > Air Fuel Delivery > Air Intake Fuel Sensors
• condition: New

seller acrasensor:

• city: Albuquerque, New Mexico
• rating: 91.2%
• # reviews: 52877

payments acrasensor:

• wallet: Apple-pay
• credit card: Visa
• other

returns acrasensor:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

Acura 81PSCB49 Is Similar To:

• 003102875zeg Cciyu For Acura Tsx Front Knock Sensor Direct Replacement (32.1% similar) 12 months manufacturers warranty for defective items excluding damaged and or misused after receipt. The images shown are not actual item and for your reference only...(May 10th, 2019)
• 003102879zeg Cciyu Piece Front Premium Knock Detonation Sensor Fits Acura Rl (40.6% similar) The images shown are not actual item and for your reference only. Accessories come with a 3-MONTH warranty. 12 months manufacturers warranty for defective items excluding damaged and or misused after receipt...(May 10th, 2019)
• 003102884zeg Cciyu Front Knock Detonation Sensor Assembly Fits Acura Csx Honda (38.6% similar) Accessories come with a 3-MONTH warranty. 12 months manufacturers warranty for defective items excluding damaged and or misused after receipt. The images shown are not actual item and for your reference only...(May 10th, 2019)
• 003102888zeg Cciyu Front Performance Knock Detonation Sensor Fits Acura Rsx (40.8% similar) Fast shipping:all our packages use USPS first class package service accessories come with a 3-MONTH warranty...(May 10th, 2019)
• 065500-2820 Denso Acura Integra Oem Secondary Oxygen Sensor Ratio (21.2% similar) Get business information that counts. Shipping carrier domestic USPS first-class...(April 17th, 2018)
• 079800-5410-079800-5410-0798005410 Denso Acura Rsx Wire Plug Connector Sensor Vacuum Actuator Harness (22.6% similar) You are looking at one good used wire plug connector harness end clip off the valve sensor, as shown in photos. MRW488 stock MW559 Hollander it is pulled out ready to ship. It is out of a 2002 acura Rx base 2 door hatchback with. Thanks good luck. Exterior color code was: NH-623 NH-623M interior ...(May 15th, 2018)
• 37830rnaa01 Acura Honda 08-2014 Map Sensor Free Kwik Ship Apps (26.4% similar) Part 37830RNAA01. Please for costs to other areas. Acura Honda ' map sensor in excellent condition...(February 27th, 2016)
• 0i58308746vt1mu Kwiksen For Acura Csx Air Fuel Ratio Oxygen Sensor (34.6% similar) Brand new air fuel ratio sensor direct plug-in replacement wire: 4 length : 330MM 13 inch warranty: one year unlimited miles. Package includes: 2PC x air fuel ratio oxygen sensor upstream downstream must know before buying: the following information is for instructional and guidance reference only...(March 14th, 2018)
• 10343zr136rp8h9i Kwiksen For 2007-2009 Acura (32.4% similar) 6 inch warranty: one year unlimited miles. 5l upstream engine: J35A7 2009 Honda odyssey V6-3. Fits vehicle: acura DX V6-3. 5l upstream rear Honda odyssey V6-3. 7l upstream 2007 Honda odyssey V6-3. For acura DX V6-3. If check engine light is on or an obit trouble fault code occurs after ...(August 18th, 2017)
• 1102888won Wonderfulparts Front Complete Knock Sensor Assembly Fits Acura Rsx (41.7% similar) Q: when will the item be shipped out...(June 19th, 2019)
• 122518-103 Genuine New Air Mass Sensor Boot Fits Acura Mdx With (32.3% similar) Premium oem...(December 26th, 2018)