Part# 10-01235
MFR Model# 2A1


Complete engine analyzer kits include CHT gauge, selector switch and probes for each cylinder. 4 cylinder engine. 14MM.

Made in USA
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as advertised

Gerald Verified Purchase


February 1, 2022

Works great! I initially bought the more expensive temperature compensated gauge which did not work at all. Apparently it was defective out of the box. I replaced it with this and finally have a gauge that works. Very pleased with it.

John H
January 21, 2021

exceklent delivery time and exact product for my completion

Peter W
September 25, 2020

Arrived quickly. Exactly what I ordered. ACS hits home run. The sender is not as robust as one that I would design, and over time they fall apart and get twisted into oblivion after many spark plug changes on two stroke engines. That characteristic may be unavoidable. They are relatively cheap and easy to replace.

Steve H
July 28, 2020

The casting of the case is unacceptable in any case (tso or not) The back plate still has spurs from the molding process. The back plate bows in the middle between all four corners. I have not installed or run this gauge, but not expecting much. This gauge would be OK at $30-40.

Ed S
January 27, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Which thermocouple do we need for the Westach Cylinder Head Temperature Gauge part# 10-01235?

The Westach Cylinder Head Temperature Gauge is for use with a 48" type J"712 series thermocouple.

Q: Does the 10-00419 gauge feature temperature compensation?

Per Westach, the Cylinder Head Temperature CHT Gauge does not feature temperature compensation.

Q: Is the thermocouple included with these Westach CHT Gauges? Is it the bayonet type or spark plug gasket type?

No, this gauge does not include the probe. Please see the type J Westach thermocouple senders.

Q: How do you connect it to power and to the sender?

You connect the two via the connector kit with the unit.

Q: Will this Westach CHT gauge work on a 24 volt system?

This instrument is self-powered and does not require an external power input.

Q: Does the J wire come ready to connect straight to the pins on the back of the gauge?

Yes, the probe (part number 10-01227) comes pined and ready ti connect to the back of the gauge.

Q: Will the WESTBERG 2A1 W/ 712-4W SENDER fit 18mm Spark Plugs?

Yes, this will work with 18mm standard plugs.

Q: Westach Cylinder Head Temperature Gauge 2A2 thermocouple required?

For use with 48" type J 712 series thermocouple.

Q: What is the length of the sender cable?

The sender has a 4 foot lead.

Q: Is the part # 10-01235 back lit?

No, P/N 10-01235 is not back lit.

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