+$250 Core Exchange Charge
Part# 08-13713
MFR Model# H4370OE
POWERUP 4370 O/H MAGNETO08-13713


NOTE: Core charge added to cart once overhauled magneto is added to cart. Please remove drive gears before returning Magneto cores for "Core Credit."

Quality and Value are back together again.

Utilizing over 35 years of manufacturing FAA/PMA replacement magneto parts, PowerUp is proud to introduce an ALL NEW direct magneto replacement for general aviation. Performance improvements including coil, capacitor, breaker points, and impulse coupling make the PowerUp magneto the superior quality option for General Aviation.

PowerUp Aircraft Ignition Systems magneto series with both non-impulse and impulse coupled units, with both 4 and 6 cylinder. Complete line of PMA replacement parts, overhaul, and 500 hour inspection capabilities.

Aircraft Magneto Overhauls for Slick, Bendix, & Continental (CMI FMR. TCM) Magnetos

Surpassing Your Highest Expectations for Aircraft Mag Inspections & Overhaul Service.

PowerUp overhauled magnetos use the best of serviceable parts and new parts which results in a magneto of OEM quality at an overhauled price. PowerUp has the industries greatest supply of high quality Bendix dual magneto cores. Our inspection criteria is demanding and we only use the best of serviceable parts. If a part does not pass the inspection criteria, then PowerUp replaces the unservicable part with a new replacement part. When delivered to our customers to be installed on your airplane’s engine, the PowerUp overhauled mag looks like new and will operate like new.

Drive gears are not included.

6300 series is a direct replacement for previous 6200 series Magnetos.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -

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This is a excellent product and much cheaper than new. I sent my core back and received credit. No issues

Jay B Verified Purchase


October 31, 2023

Pending installation cant tell yet.

John B Verified Purchase


March 25, 2023

This reman is running fantastic, need too give it a year on the O360 Lycom to get a better idea on longevity.

David Z Verified Purchase


January 18, 2022

Mag performs well

Palmetto A Verified Purchase


January 6, 2022

Everything as stated. Completely satisfied

Gail H
April 26, 2021

Had to confirm with staff as to what was included, eg. gaskets because of the adapter needed for the left mag. Person was very helpful in determining gaskets that were needed.

Ed T
April 9, 2021

Replacement from a defective rebuilt Magneto. The product was ready for pick up the next day and worked great. My plane is work better than it has in 3 years and it appears I have picked 5 knots of airspeed and both my Magnetos are matched perfectly and dialed in. Thank you, Keith

Keith R
February 5, 2021

It works

Ray J
October 20, 2020

They seem to work OK.

Frances P
September 16, 2020

Quickly installed and adjusted. The plane runs like a top ! Will buy again.

Carl E
September 8, 2020


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: Does the Kelly 4371R overhauled Slick magneto come with the impulse coupling?

Yes, the unit does come with an impulse coupling.

Q: Is the coil replaced on the Kelly Overhauled 4300 series Slick mags?

Yes, they are replaced.

Q: How does the core exchange process work? Can I buy the mag and have it shipped first and than send the core for a rebate later?

Yes, that is exactly how it works. You buy the mag first and pay the upfront core charge. We ship the mag same day if it is in stock, if it is not in stock we ship it as soon as possible. Then once you send back an acceptable core we refund the core charge.

Q: Is the 4200 model OK for a core?

Per the vendor: No, only 4300 series Slick mags will be accepted as cores.

Q: Does the 4373R magneto come with a impulse coupling installed?

The Slick 4373 is an impulse coupled unit, and will come with the impulse coupling.

Q: What is the warranty of these magnetos (08-13713 4370,3 Kelly OH Slick Mags) the warranty is decided per hours or time?

|Kelly Aerospace Energy Systems shall be free from defects in material and workmanship under normal use and service for a period of ONE YEAR ON ALL NEW COMPONENTS and SIX MONTHS ON ALL OVERHAULED COMPONENTS. The warranty period begins (unless otherwise noted) from the date of installation into the aircraft.

Q: Does the 4371R overhauled magneto come with a new impulse coupling?

Yes, the unit does come with an impulse coupling.

Q: What is the core charge for 4373R KELLY OH SLICK MAG?

Current core charge will be automatically displayed in the shopping cart once the magneto is added to the cart.

Q: Will you accept a Champion magneto as a core for a purchased Kelly magneto?

Yes, Champion / Slick magnetos are accepted as cores.

Q: Is the kelly OH slick mag PN 4301R is interchangeable with champion slick mag 4301?

Yes, both are used for the same applications.

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