| HALYARD HANDLER | NAVMAN 3100 Repair| Ignition | Oil Filter | Crankcase | FWC - Mechanical | Propeller | FWC - Electric | Tensioner | Thermostat | Ballast Resistor


Not for the Atomic 4 BUT ...
The HALYARD HANDLER - No more Noisy Halyards!! (Click Here)


CHECK OUT OUR NEW THERMOSTAT KIT - Now Available (Click Here)



Thank you for your interest in our Aftermarket Upgrade Kits for the Universal Atomic 4 engine. We are excited to be able to help you improve the perfomance and reliability of your engine and keep the fleet running strong well into the 21st century. Within this site, you will find information, drawings, and photographs which describe our Atomic 4 product offerings ... Electronic Ignition with Ballast Resistor, Fresh Water Cooling (Mechanical and Electric), Crankcase Ventilation, Oil Filter, Belt Tensioner, Thermostat, and a Propeller just for the Atomic 4. Each kit is specifically engineered for the Atomic 4 and comes with detailed instructions and all parts and hardware for a quick, easy and professional installation. I think you will find the information most helpful in your quest to extend the life of your engine as well as to improve operation.

Happy Motoring and sailing, too.

Tom Stevens
Atomic 4 Owner




A new Ballast Resistor Kit is now available for the Indigo Electronic Ignition Kit. This will be included
on new kits and available for retrofit on previously installed kits.
(Click Here)


(Click Here) (Click Here)

Check out our NEW RADIAL WINGLET Propeller !

All products usually in stock. If back-ordered, typical delay in shipping is only 5-7 days.
Send your questions or comments to tom@atomic4.com

or Call

1-800-428-8569

toll free
or 757-593-8569

CHECK OUT OUR NEW FWC OPTION THAT HAS AN ELECTRIC ANTIFREEZE PUMP (Click Here)





| HALYARD HANDLER | NAVMAN 3100 Repair| Ignition | Oil Filter | Crankcase | FWC - Mechanical | Propeller| FWC - Electric | Tensioner| Thermostat | Ballast Resistor