Part# 10-06274
MFR Model# 399-OT
Sender TypeDescriptionPart No.
Temperature1/4x28 THD, 1/4" tip with nut, 4' lead, 1,750 ohms @ 100F10-06274


Non-TSOd fuel quantity indicators available for single or dual tanks. Requires 0-5V capacitance senders (not incl.)
Note: Westberg 712 Series Thermocouples are for Non-TSOd CHT & EGT Gauges only. They have two small pins which are the same size.

Made in USA
  • Frequently Purchased With
  • Customers Also Viewed
  • Related Items


As ordered.

Barry D
April 12, 2021

Easy to instal and worked great!

Tom D
September 30, 2020

Good product, works great with my Westach indicator BUT I delayed purchasing it because the “4 wire” in the description confused me. The old one is a 2 wire. I dug deeper and figured out they meant “4 foot wire”. I went to the Westach website, figured out which probe I needed then went back to AS with the correct part number. AS could have saved me the trouble.

April 25, 2020

Received ahead of schedule and it works great.

Jim M
March 12, 2018


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: What is the difference between p/n 10-01225 and p/n 10-01228?

They are both are EGT probes, but p/n 10-01225 is non-tso approved while p/n 10-01228 is FAA TSO approved.

Q: Is your sender unit part number 10-01226 the same as Westach Sender part number 712-5WK? I need to verify it is a J type sender, 48 long for Westach.

Yes. Our part # 10-01226 is ordered directly from Westach under 712-5WK. They are the same product.

Q: Is part number 10-01230 sold a single CHT probe or multiple?

Part # 10-01230 is priced and sold individually, one probe.

Q: Is the thermocouple part number 10-01226 FAA TSO approved?

No, part # 10-01226 is non FAA TSO approved.