Thumbs 1
Thumbs 1

Plane Power Lightweight Alternator Kits For Experimental Aircraft

From $1490.00 to $1572.00
Description Part No. Price Buy
AL12-EI60/L - 60A LSA
*Must be installed in combination with the Sky-Tec LSA Starter, provides the industry’s lightest charging / starting package at 13.2 lbs. for Lycoming’s O-233, O-235, O-290 and O320 engines. Fits engines with 122 tooth ring gear and case mount engines.
Belt Not Included.
Subtotal $0.00
Add to Wishlist


Note: Core charge now applies on Plane Power Alternator kits

The AL12-EI60 kit comes with an ultra compact lightweight AIRCRAFT alternator with an exclusive internal crowbar overvoltage protection circuit. The alternator is fully pilot controllable through unique internal wiring. The dual internal fans are designed for aircraft engine rotation for maximum cooling. The AL12-EI60 kit includes the tension arm, mounting brackets, and all required AN hardware.

Also available 70 amp version only 2 additional pounds.

Boss Mount
Attaches to a bracket mounted to the side of the engine

Case Mount
Mounts to 3 bolts that hold case halves together.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -

Core Return Policy

Any unit being returned for core or warranty core credit shall be, as removed from the engine, complete and not disassembled. No core or warranty core credit will be allowed for automotive units. Units that are rusty or cannot be overhauled for any reason will be classified as scrap, having no value. Units which have been weld repaired, as well as units which have been disassembled and then reassembled with old parts, will also be classified as scrap, having no value. A percentage of the core value will be charged for all missing or damaged parts. At no time will the damaged or missing parts charge on any unit exceed the core value of that unit.

1. Core will only be accepted for credit 12 months from date of invoice.
2. Cores returned in excess of cores invoiced will not be accepted.
3. Cores must be of like purchase, a directly superseded unit or replaced unit when installing an STC'd product.
4. Competitive product cores are acceptable returns.
5. Cores must have a legible data tag for part and serial number verification.

Note: Customer will need to provide core for overhaul in the event our supplier does not have cores available to overhaul.

  • Accessories
  • Frequently Purchased With
  • Customers Also Viewed


As a previous reviewer stated, it charges at 14.x volts, but that is normal and acceptable. If it charged at 12.x volts, your battery would never charge. I installed an externally regulated one in my 1966 Cherokee 140 and it has flown trouble free for many hundreds of hours. Sold that plane and installed the experimental, internally regulated version on my Vans RV-7A. It has been trouble free for 160+ hours. I have read of a few that had wires back out of the connector at the back but proper installation and wire support should avoid that from happening. Do your homework on the belt size required before purchasing. It comes with the most common size.

Volo A
June 21, 2018

I had mistakenly ordered the wrong alternator and discussed it with a service representative. She advised me that I could return the incorrect one and they would send me the correct one. All of that was fine and the new alternator works great BUT I returned the incorrect on on the RMA and the company received it almost two weeks ago and I still have not received the credit. So, Plane Power alternator is 5 stars, customer service is about 2 stars.

Dana S
November 9, 2020

I bought the original 60 amp Plane Power over a decade ago and it’s given me good service. Recently it failed so I replaced it with the same model. Deducted a star because a wire in the stator failed but if the new one lasts as long I’ll be happy.

Mark O
October 1, 2020

Very nice quality part, everything bolted up and fit very nice. I like that all new hardware is included. As above mentioned the belt is designed for the larger diameter pulley. My only criticism, is that it did not include an install manual. I had to call to get a copy. Its not even on their website for this particular model. The only paperwork at all included was the test run sheet. Ive had good luck with Plane Power, and have an STC version on my personal plane.

Advantage A
January 30, 2020

Bearing failed after 18 months of service, disappointing.

Matthew F Verified Purchase


September 24, 2023

Pretty easy to install, I liked having the peace of mind of over-voltage crowbar protection. My previous automotive alternator had been installed and working for nearly 20 years so it was time to replace it. The Plane Power replacement only lasted slightly over 3 years. Will be going with a different brand in the future.

Kent H
February 24, 2020

Alternator looks great, mount and screws are supplied. But the following is really nasty: - The tension arm supplied does not fit (to short) IO-320 - No drawings available for the supplied tension arm - No drawing available for the additional available tension arms Hartzell itself has no information about the dimension of the tension arms on their home page. Need to investigate and organize these drawings to checkout the correct one , then order again one, shipping oversea will cost a fortune. This just because all parts where not well documented. This is not a good service.

Stadler D
November 24, 2019

Charges at 14.7v contacted Plane Power support, no reply. Changed internal regulator with new unit, no change in high voltage.

Langdon E
November 5, 2016


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: On the AL12-EI60 alternator, is the internal voltage regulator adjustable ?

No, the internally regulated alternators are not adjustable.

Q: Does the AL12-E160/B boss mount lightweight alternator come with the voltage regulator? It says on the Plane Power website that it does.

This will have an internal voltage regulator on the alternator itself. There is no external regulator that comes with this.

Q: Photo depicts a wiring harness, is the harness provided with purchase of these Plane Power Lightweight alternators for experimental aircraft?

Yes, the wiring harness is provided with the purchase.

Q: Im confused, does the AL12-EI60B Boss mount alternator, require the Skytec 122 LSA starter? I have the 122-NL Skytec starter on an O-320.

No it does not. You will be fine with the starter currently installed.

Q: What is the weight of the AL12-EI60/B?

The unit itself is approximately 7 lbs.

Q: Does the alternator kit alone come with the mounts? Everything in the picutre, Either boss or case mount.

It comes with everything in the photo on the website. Belt, mounts, harness, etc etc.

Q: Is the wiring harness available separately?

Yes, our part number is 07-18001.

Q: Do I still need a separate voltage regulator with the AL12-EI60/B HARTZELL PLANE POWER ALTERNATOR?

The AL12-EI60/B is internally regulated.

Q: What is the difference between boss and case mount? I have a wide deck O-360.

Boss Mount: Attaches to a bracket mounted to the side of the engine

Case Mount: Mounts to 3 bolts that hold case halves together.

Q: What diameter is the belt that is supplied?

36-3/16 inch.

View in Catalog

View Image View in Catalog