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  3. HITACHI AUTOMOTIVE SX-2537

HITACHI AUTOMOTIVE SX-2537 Ignition Knock Detonation Sensor 2.2L

fits model: Fw, Impreza. make: Subaru. year: 1998–2002.

Sx-2537 Hitachi Automotive Ignition Knock Detonation Sensor For 1998-2002 Subaru Impreza 2.2l Fw

( Brand: Hitachi Automotive ), ( Type: Ignition Knock ), ( Manufacturer Part Number: SX-2537 ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C745 60-23 ), ( Item Height: 3.150 ), ( Item Length: 6.750 ), ( Item Weight: 0.2000 ), ( Item Width: 4.250 ), ( Placement On Vehicle: Emission Control Sensors ), ( Compatible Model: Impreza ), ( Compatible Year: 2002 2001 2000 1999 1998 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Hitachi Ignition Knock )

Review HITACHI AUTOMOTIVE Ignition Knock Detonation Sensor Subaru 2.2l fits IMPREZA FW 1998–2002

The Hitachi SX-2537 ignition knock detection sensor is a crucial component in ensuring optimal engine performance for Subaru Impreza models produced between 1998 and 2002 with a 2.2L flat-four engine and factory fuel injection system. This sensor is designed specifically for the Subaru Impreza and is an essential upgrade for any driver seeking improved engine efficiency and durability.

The ignition knock detection sensor, also known as a knock sensor or a K-sensor, is responsible for monitoring the engine for any abnormal combustion patterns, such as detonation or pinging, which can cause significant damage if left unchecked. By continuously analyzing engine sound waves generated during the combustion process, the SX-2537 sensor can detect even the slightest signs of knocking and alert the engine control unit (ECU) to adjust ignition timing and fuel delivery to prevent further damage.

Constructed using high-quality materials, the Hitachi SX-2537 sensor is built to withstand the harsh conditions of a modern internal combustion engine. Its compact design ensures a perfect fit in the Subaru Impreza engine bay, while its durable construction guarantees long-lasting performance.

Installation of the SX-2537 sensor is a straightforward process, typically involving removing the old sensor, connecting the new sensor to the wiring harness, and securing it in place using the provided mounting hardware. The sensor comes with clear and concise installation instructions, making it an ideal choice for both professional mechanics and do-it-yourself enthusiasts.

By upgrading to the Hitachi SX-2537 ignition knock detection sensor, Subaru Impreza owners can benefit from enhanced engine protection, improved fuel efficiency, and increased power output. With its advanced technology and proven reliability, this sensor is an essential investment for any Subaru Impreza driver seeking to maximize the performance and longevity of their vehicle.

The Hitachi SX-2537 ignition knock sensor is a part that can help diagnose and prevent engine damage caused by knocking or detonation in Subaru Impreza 1998-2002 models with a 2.2L 4-cylinder FW engine. This sensor monitors the engine's combustion process and sends a signal to the engine control module (ECM) when it detects knocking. The following are some pros and cons of buying this particular sensor.

Pros:

1. Improved engine performance: By detecting and addressing knocking issues, the engine can run more smoothly and efficiently, potentially resulting in improved performance.

2. Preventing engine damage: Ignition knock can lead to serious engine damage if left unaddressed, such as piston and cylinder wall damage. This sensor can help prevent such issues and save you from costly repairs.

3. Cost-effective: Replacing the knock sensor is a relatively inexpensive repair compared to other engine repairs that might be required if knocking is left unchecked.

4. Diagnostic capability: The sensor can help you diagnose the root cause of engine knocking, which can save you time and money in the long run.

Cons:

1. DIY installation: Installation of the sensor may require some technical knowledge and skills, especially if you are not familiar with working on your car's engine.

2. Potential for false positives: The sensor may sometimes detect knocking even when it's not present, leading to unnecessary repairs or replacements.

3. Availability: This specific sensor may not be readily available at all auto parts stores, and you may need to order it online or from a specialty parts supplier.

In conclusion, the Hitachi SX-2537 ignition knock sensor is a valuable investment for Subaru Impreza 1998-2002 owners with a 2.2L FW engine. It can help improve engine performance, prevent costly engine damage, and provide diagnostic capabilities. However, consider the potential challenges of DIY installation and the possibility of false positives when making your decision.

Recommendation:

If you suspect engine knocking in your Subaru Impreza 1998-2002 with a 2.2L FW engine, consider purchasing and installing the Hitachi SX-2537 ignition knock sensor. Make sure to have the necessary tools and knowledge to install it yourself or consult a professional mechanic if needed. This sensor can help ensure the longevity of your engine and maintain its optimal performance.

part # sx2537 price

  • $230.84

specifications injectiopug:

  • for models: Fw, Impreza
  • for makes: Subaru
  • for years: 1998-2002
  • brand: Hitachi Automotive
  • type: Ignition Knock
  • manufacturer part number: SX-2537
  • manufacturer warranty: 1 Year
  • interchange part number: C745 60-23
  • item height: 3.150
  • item length: 6.750
  • item weight: 0.2000
  • item width: 4.250
  • placement on vehicle: Emission Control Sensors
  • compatible model: Impreza
  • compatible year: 2002 2001 2000 1999 1998
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement
  • bundle description: 1 Pc Genuine Hitachi Ignition Knock

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general injectiopug:

  • Air Fuel Delivery > Fuel Injection Parts > Additional Fuel Injection Parts
  • condition: New

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  • quantity: 1
  • availability: In Stock
  • started: August 1, 2025

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for models: fw, impreza, for makes: subaru, for years: 1998-2002, type: ignition knock, manufacturer warranty: 1 year, item height: 3.150, item length: 6.750, item weight: 0.2000, item width: 4.250, placement on vehicle: emission control sensors, compatible model: impreza, compatible year: 2002 2001 2000 1999 1998, core charge: free no core charge, fitment type: direct replacement, bundle description: 1 pc genuine hitachi ignition knock,
category: auto parts > air fuel delivery > fuel injection parts > additional fuel injection parts, sku: 7071675913215792,

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