From $682.00 to $867.00
Description PN Price Buy
4301R KELLY OH SLICK MAG 08-13699 $772.00
4302R KELLY OH SLICK MAG 08-13700 $729.00
4309R KELLY OH SLICK MAG 08-13701 $729.00
4310R KELLY OH SLICK MAG 08-13702 $830.00
4316R KELLY OH SLICK MAG 08-13703 $865.00
4330R KELLY OH SLICK MAG 08-13704 $830.00
4333R KELLY OH SLICK MAG 08-13705 $867.00
4342R KELLY OH SLICK MAG 08-13706 $770.00
4344R KELLY OH SLICK MAG 08-13707 $773.00
4345R KELLY OH SLICK MAG 08-13708 $830.00
4347R KELLY OH SLICK MAG 08-13709 $758.00
4348R KELLY OH SLICK MAG 08-13710 $867.00
4353R KELLY OH SLICK MAG 08-13711 $762.00
4354R KELLY OH SLICK MAG 08-13712 $867.00
4370R KELLY OH SLICK MAG 08-13713 $682.00
4371R KELLY OH SLICK MAG 08-13714 $758.00
4372R KELLY OH SLICK MAG 08-13715 $766.00
4373R KELLY OH SLICK MAG 08-13716 $758.00
4374R KELLY OH SLICK MAG 08-15839 $794.00
4381R KELLY OH SLICK MAG 08-13718 $772.00
4392R KELLY OH SLICK MAG 08-13719 $867.00
Subtotal $0.00
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NOTE: Core charge will be added to cart once magneto is added. Please remove drive gears before returning Magneto cores for "Core Credit."

These lightweight aircraft magnetos are being used by many new equipment manufacturers. Weigh only 3-3/4 lbs. compared to 6-1/4 lbs. for typical old style magnetos.

In early 1988, Slick discontinued the sale of re-manufactured magnetos to offer new units only.

All units carry a six-month warranty after delivery to the user. These model magnetos are completely rebuild-able. The old 4000/4100/4200 series magnetos and the 600 series magnetos may not be returned as an exchange unit for a new magneto of the same model. Only 4300 series Slick Magnetos may be returned for core credit.

Drive gears are not included. Gaskets are not included.

4300 series is a direct replacement for previous 4200 series Magnetos.

Application Guide

* Applications listed in the charts below are the most common. For additional application information please see the complete application pdf above.


(See Note)
Magneto*Rotation & Impulse
Complete Harness
(2 Mags)
Sparkplug Connector
Continental A65-8, A75-8, C75-8, C85-8, C90-8
R.H. with Impulse
Continental C75-12, -15, C85-12, -14,-15, C85-12F,-14f, -15F***, C90-12,-14,-16***,0-200A,B,C
L.H. with Impulse


0-290***, 0320, 0-360, 10-320E1B, E2B

L.H. Direct Drive

Lycoming 0-235 0-290***, 0 320, 0-360 IO-320E1B,E2B AEIO-320E1B,E2B AEIO-360B1C6, H1A


L.H. with impulse
L.H. with Impulse
VW Conversion Single Ignition
R.H. with Impulse
(1 Mag)

* 4300 series replaces 4200 & feature improved cases & new bearings. Drive Gear No. 36066 applicable to Cont. A65-8, A75-8, C75-8, C85-8, C90-8,C85-12-14-15, C90-12-14-16 and 0-200A,B,C w/ light accessory case.
 Please call for price and availability.
** For new installations, order Kit No. K4521 which consists of two 4230 magnetos, one M2045 harness, two M2638 adapters (see Note 2) and four M2639 studs.

M2639 Studs
K-3328 Installation Pin & Clamp kit (one per mag)
*** The magnetos shown will fit the engine but installation is not FAA approved. Form 337 required. Note 2: Specify adapter thickness. M2638-1 (.560"), M2638-2 (.660"), M2638-3 (.760"), M2637 (.810"), measured from mounting pad to front of engine gear.
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Arrived quickly and well packaged . Works well.

Nigel B
October 6, 2019

Working fine so far. Apparently a good product from Kelly Aerospace.

Byron E
May 25, 2017

Installed both mags This mag after installing at annual experienced a miss from this right mag. Thought it may be a spark plug changed suspected plug. Second engine run up this time when testing left mag engine died this time. Brought back in hanger removed mag and the A&P I.A. had to disassemble mag to find that the condenser wire from the points was not plug on to condenser. It was just laying against it and there was visible burn makes on the spade connector. reassembled installed mag and ran engine again now things are fine. I feel quality control should be better than this.

Joseph H
April 26, 2019

One of the two mags was bad! Will have to send back. At least Kimberly got it corrected in good order

Br T
August 28, 2018

Your on-line catalogue did not give the information I needed (at least not where I could find it) so I called ACS and talked to a woman who was to help me find the Slick magneto models that I needed for my Lycoming O360 A4M engine. I gave her my information and that I needed one with a impulse coupling. She told me that I needed a 4370 and a 4347. Turns out that neither magneto is impulse coupled. So, I went to another source for my necessary information and found that I need a 4371 impulse coupled magneto. So I ordered the proper magneto. Now, I have to return the one magneto to ACS. Another delay for me because the person at ACS gave me the wrong information. Your on-line catalogue needs some work to make it more user friendly!

Byron E
May 25, 2017

Had a miserable experience with the 4371 impulse coupled mag. Right after installation, the plane experienced hard starting...both cold and hot starts. Subsequent check of the timing showed they were installed perfectly. After becoming stranded at a distant airport, the mechanic there determined it was a weak magneto. Kelly didnt offer to ship another one, and neither did Spruce, unless one was purchased to replace it. Terrible product, support, and customer service from everyone involved. Two months after purchase, Spruce still has the wrong information about the magneto, saying that the coil and condenser is replaced, which is not true. All around horrible and expensive experience.

Jeffrey F
May 23, 2017


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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