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Alfano A2155 14mm K-Type Spark Plug Temperature Sensor for Kart Racing
Alfano A2155 14mm K-Type Spark Plug Temperature Sensor for Kart Racing
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Alfano A2155 14mm K-Type Spark Plug Temperature Sensor for Kart Racing

Part Number: A2155
Online Price: $89.50
Alfano 14mm Spark Plug Temperature Sensor A2155 – K Type
Availability: In Stock.

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Description

Alfano A2155 14mm “K” Spark Plug Temperature Sensor


K-Type Thermocouple for Kart Engine Temperature Monitoring

The Alfano A2155 14mm K-Type Spark Plug Temperature Sensor is a high-precision thermocouple designed specifically for kart racing engines using a 14mm spark plug. Built with reliable K-type thermocouple design, this sensor delivers fast and accurate cylinder head temperature (CHT) readings directly from the spark plug location.

For competitive kart racers, monitoring spark plug temperature is one of the most effective ways to protect your engine and optimize tuning.


Why Monitor Spark Plug Temperature in Karting?

Spark plug temperature data helps you:

  • Detect lean or rich jetting conditions
  • Prevent overheating and piston damage
  • Monitor engine load and tuning changes
  • Protect high-compression racing engines
  • Fine-tune carburetor settings for maximum performance

In high-RPM kart engines, real-time temperature data can prevent costly engine failures.


Key Features

  • K-Type Thermocouple Technology – Fast response and accurate temperature readings
  • 14mm Spark Plug Fitment – Designed for most kart racing engines
  • Direct Cylinder Head Measurement – Reads temperature at the combustion chamber
  • Race-Proven Reliability – Ideal for sprint and shifter kart applications


Installation Notes (Important)

Remove the spark plug sealing washer before installation.
The thermocouple ring replaces the washer and must sit directly against the cylinder head for accurate readings.

Must be used with:

  • Alfano Extension Cable A3401
  • Or Alfano Hub A2190

Proper installation ensures accurate temperature monitoring and reliable data logging.


Compatibility

  • 14mm spark plug kart engines
  • Compatible with Alfano data logging systems (when used with A3401 extension or A2190 hub)
  • Suitable for sprint & oval kart and shifter kart applications

FAQ

What does the Alfano A2155 measure?

The A2155 measures cylinder head temperature (CHT) at the spark plug location using K-type thermocouple design. It provides fast, accurate engine temperature data for tuning and protection.


Why is spark plug temperature important in kart racing?

Monitoring spark plug temperature helps:

  • Detect lean jetting conditions
  • Prevent overheating and piston damage
  • Monitor engine load during long runs
  • Fine-tune carburetor settings
  • Protect high-compression race engines

In high-RPM kart engines, temperature data is critical for reliability.


What size spark plug does this sensor fit?

This sensor is designed for 14mm spark plugs, which are commonly used in kart racing engines.


Do I remove the spark plug washer?

Yes. The spark plug’s sealing washer must be removed before installation. The thermocouple ring replaces the washer and must sit directly against the cylinder head for accurate readings.


Is this compatible with all Alfano systems?

This sensor must be used with:

  • Alfano Extension Cable A3401, or
  • Alfano Hub A2190

Always verify compatibility with your specific Alfano display or data system.


Can this be used on sprint and shifter karts?

Yes. It is suitable for both sprint & oval kart and shifter kart applications, as long as the engine uses a 14mm spark plug.


How does this help with carb tuning?

By monitoring cylinder head temperature trends, you can:

  • Identify lean or rich conditions
  • Compare temperature changes after jetting adjustments
  • Avoid overheating during long race sessions

It’s one of the most effective tools for safe, performance-focused jetting.

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