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Classic-HHO System Kits that come with all the necessary parts to interlink the cells, and attach the system to you vehicle. All Classic-HHO products include access to the 30-page PDF Installation Guide to help you successfully adapt your vehicle with HHO.

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1-Cell HHO System Kit 1-Cell Starter System Kit

Designed as a starter kit for any gasoline or diesel engine.

MSRP $89.95
Exclusive Website Price $71.90
Savings: $18.05
2-Cell HHO System Kit 2-Cell System Kit for 4-cylinder Engines

Designed for any gasoline or diesel engine that is 4-cylinder, or around 2.0L in size

MSRP $149.95
Exclusive Website Price $114.90
Savings: $35.05
4-Cell HHO System Kit 4-Cell System Kit for 6-cylinder Engines

Designed for any gasoline or diesel engine that is 6-cylinder, or around 4.0L in size

MSRP $249.95
Exclusive Website Price $192.90
Savings: $57.05
6-Cell HHO System Kit 6-Cell System Kit for 8-cylinder Engines

Designed for any gasoline or diesel engine that is 8-cylinder, or around 6.0L in size

MSRP $349.95
Exclusive Website Price $262.90
Savings: $87.05