P/N: ES4370

New Hartzell PowerUp Magneto ES4300 & ES6300 Series

FAA-PMA Aircraft Magnetos for Lycoming, Continental, and Franklin Engines

Upgrade your ignition system with Hartzell PowerUp ES4300 and ES6300 series magnetos. FAA-PMA approved direct replacements for legacy Slick magnetos. Available in both impulse-coupled and non-impulse configurations for 4- and 6-cylinder piston engines, these new aircraft magnetos deliver stronger spark, easier cold starts, and long service life.

Engineered with performance improvements:

• Impulse Coupling: Single-piece hub design with no rivets. No SBs or ADs
• Capacitor: Internally grounded lead with square insulator and stud base for improved durability and installation accuracy
• Coil: Thicker insulation for higher spark output; thicker lamination plates resist deformation during assembly
• Breaker Points: Clamp-up force on metal frame with improved spring to eliminate point bounce and reduce point drift over service life
• Block Assembly: Arc suppression ribs reduce misfires; geometric asymmetry prevents incorrect installation
• Distributor Gear: Monel construction for superior arc erosion resistance; heat-staked electrode for mechanical stability

Includes 1-year warranty. Core return necessary to receive core credit.

4-cylinder Application Guide: View Here
6-cylinder Application Guide: View Here

Also Available:

• Powerup Ignition Harnesses: Maximize ignition energy and minimize flashover. FAA-PMA approved ignition harnesses for Continental and Lycoming engines available in complete sets or as individual left- and right-hand units. Learn more here.
• Powerup Replacement Parts and Service Kits: From washers and cotter pins to distributor blocks and impulse couplings, PowerUp has the largest catalog of Bendix, CMI, and other aircraft magneto replacement parts in the world. For repair kits, click here. For replacement components, click here.

See the magneto comparison table below. All magnetos follow a part number sequence:

• PowerUp (New): P/N ESXXXX
• T&W Overhaul: P/N XXXX-FOH
• PowerUp Overhaul (PowerUp Deluxe): P/N XXXX-OH