Magneto Filter - FAA / PMA Approved

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Part# 07-00713
MFR Model# LS03-01010


Lone Star Aviation’s Magneto filter (FEED THRU) (Fail Safe Design) attenuates both low and high frequencies of noise generated from bendix magneto ignition systems. The firing of the aircraft spark plugs through the ignition systems harness can cause noise problems and interference to aircraft electronics such as audio panels, radio equipment, navigation equipment, instrumentation, and autopilot systems on board an aircraft. This filter has been used by avionics shops, OEM aircraft manufacturers, and FBO’s, to attenuate and suppress pulsating noise generated by their aircraft’s magneto systems. The magneto filter is FAA-PMA approved and is compatible with the bendix series S20, S21, S200, D3000, D4000 magneto.
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  • 1000 VDC working voltage, 5000VDC break down voltage
  • Capacitance: .05 uf-self healing technology
  • Braided cable is shielded, silver plate over copper, supplied in 8 inch lengths.
  • Heavy duty mounting clamp
  • Advanced feed through design
  • Temp. range: -35°C to +80°C
  • Max. current: 20 amps



Outer grounding wire sheath is to small for bendix mags.may be fine for newer style mags

Wilhelm P Verified Purchase


March 4, 2022

Nice product

Aeropro Verified Purchase


February 21, 2022


Thomas W Verified Purchase


July 29, 2021

Keep up the good work.

December 8, 2020

i got it

George S
October 16, 2020

Needed for my Bendix mags. Very good quality

John W
September 12, 2020

Had engine noise in my radios very badly adding this to my mags totally eliminated the noise couldn’t be happier

Bobby B
January 9, 2020

A good product that sorted out the problem. Will be ordering more today.

July 26, 2019

Quality product. Packaged correctly and fit on Bendix magneto with no problems.

Paul A
December 7, 2018

Excellent product shipped quickly and packaged well!

Dennis M
November 16, 2018


Please note,'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. 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: Is there a wiring diagram available for this filter?

We have added the wiring diagram to the "Documents" tab of the web page. Please review it there.

Q: Can this Magneto Filter be used with Slick Mags?

Per the supplier: The Magneto Filter is not designed for use with Slick Mags. Our Magneto Filters are only eligible on select Bendix mags (S20, S21, S200, D2000 and D3000). If your customer is picking up audible noise in his headsets, I might recommend using our Eliminator Filter (Part # 11-08055), in line on the power to the radio.

Q: Do I need one magneto filter for each mag?

Yes. You will need one filter per mag.

Q: Does this magneto filter come with a contact end and the needed terminals to transfer the attachment nut and spacers?

This unit has a pigtail with a connecting terminal, and a screw with a knurled nut, as pictured.