Electronics International UBG-16 Ultimate Bar Graph Engine Analyzer

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Part# 10-00593
MFR Model# UBG-16-4-MEM


The Ultimate Bar Graph is simply that – the Ultimate. No other bar graph in the industry comes close to offering the options available for the UBG-16. It is a sophisticated instrument with unique features designed to provide pilots with a unique tool for detecting engine problems in their earliest stages and assisting you in operation your engine safely and economically. The UBG-16-4G-MEM and the UBG-16-6G-MEM are intended for aircraft with a primary CHT already installed. One of the included CHT probes is replaced with a P-102-3/8 Piggyback CHT Probe that sits between the Primary CHT Probe and the cylinder being monitored.

The UBG-16 arrives complete with pilot-programmable redlines for alerting pilots of engine troubles, data recording for flight information reviews, in-flight engine diagnostics information, differential and shock cooling alarms, hands-free leaning assistance, long-term normalized mode, completely scalable EGT bars, and an array of functions available to monitor. With the UBG-16 installed in your aircraft, you will have up-to-date information about your engine at all times.

The UBG-16 comes with 16 customizable inputs. These inputs are capable of accepting the live data output from EI’s function modules. The wide variety of available function modules allows you to keep an eye on all critical engine parameters. Choose between RPM, Manifold Pressure, Gyro Vacuum, Volts, Amps, Oil Pressure, Fuel Pressure and Fuel Flow.

The UBG-16 comes complete with programmable alarms for each individual input channel. This means pilots have the capability to set unique upper and lower alarms for each cylinder. The ability to individually set redlines for your EGT’s and CHT’s is absolutely critical, as some engines have cylinders with substantially different operating ranges from one another. Just because cylinder number 4 might have a redline of 1350 does not mean Cylinder 1 has the same redline. Other manufactures claim otherwise, because their instruments do not have this ability to set individual redlines.

More Alarms
On top of the already impressive individual redline programmability, the UBG-16 comes complete with a CHT shock-cooling limit, and an EGT differential limit. Shock cooling will alert you if your cylinders exceed a cooling rate that could result in thermal shock. The EGT differential alarm will keep an eye out for rogue EGT’s that may be an indication of a larger problem occurring in your engine.

With the UBG-16’s full suite of alarms, you will be alerted to most problems that can occur within your engine, whether they be due to ignition, fuel mixture or compression. If your engine is not giving you the performance it once did, if temperatures are not within the operating ranges you’re used to, or if limits are being violated, our technically adept staff will offer their assistance when you are diagnosing what is occurring in your engine. Or, use our Pilot’s Diagnostics Manual to study the art of troubleshooting on your own. Either way, we’re here to help you.

Note: Unit is STC'd/PMA'd. Can only be used as a secondary engine monitor. For primary see the MVP-50.

E.I. products include all documentation and certifications


    16 Input Channels
    Besides EGT and CHT, the UBG-16 is capable of accepting inputs from TIT, OAT, Carb Temp, any other temperature, Manifold Pressure, RPM, Volts, Amps, Oil Pressure, Oil Temperature, Fuel Flow, Fuel Pressure, and Gyro Vacuum Pressure.

    34 Programmable Limits
    16 Programmable Upper Limits – One for each Input Channel, 16 Programmable Lower Limits – One for each Input Channel, Programmable EGT Differential Limit, Programmable CHT Shock Cooling Limit.

    Scan Rate: Programmable from 1 to 9 Seconds per Channel

    Mount: 2.25"

    Depth: 5.35"

    Instrument Weight: 19 Oz.
    Probe and 6′ Cable Weight: 3.5 Oz.
    Probe and 10′ Cable Weight: 7 Oz.

    Resolution: 1 Degree (Fahrenheit)

    Accuracy: 1/2%.

    Display: Plasma, adjustable dimness for night operations

    Power Requirements: 7.5 to 35 volts, at .3 amps

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Great Analyzer. Installation went perfect. Worked as expected.

Jared C
May 7, 2021


Please note, Aircraft Spruce Canada'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 Canada 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: Does this unit have availability for OAT?

Yes you can add an OAT add-on to the UBG-16 with part number 10-25240 (P-128-XCP-6).

Q: Is the EI MUX-8 included in the UBG-16 for storing data and downloading it later?

Yes, the MUX-8 comes with the UBG-16.

Q: Does the company offer a carb temp option?

Electronics International offers the A-1 (#10-01307) which can accurately monitor Outside Air Temperature or Carburetor Temperature.

Q: I need to change an EGT probe. What is the standard probe that come with the EI UBG-16 unit?

The standard EGT probe is the P-110 part number 10-01591.

Q: What is the difference between the EI UBG-16-4-MEM system and the UBG-16-4G-MEM?

The "G" designates a gasket CHT probe. It is used in conjunction with a factory CHT gauge as the UBG-16 is not a primary instrument. When ordering the "G" version, one gasket style CHT probe will be included with the package.

Q: Are the 4 CYL and 6 CYL EI UBG-16 engine analyzers the same, only difference being the additional probes for the 6 cylinder?

Yes. The 4 cylinder display is the same without the 2 additional cylinder displays and minus 2 temp probes.

Q: What if any probes are included with the UBG-16 analyzer?

You will receive with the unit 4 or 6 P-110 EGT probes and 4 or 6 P-100 CHT probes.

Q: What is the P/N for CHT Probe P-100?

See part # 10-00808 for the EI P100 probe.

Q: Where can I source a replacement data download cable for pulling whats saved from the MUX-8A memory?

Please view part # 10-04978.

Q: Looking for the P/N for UBG-16 ITT probe .

See Part # 10-25235.

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