Passenger Vehicles
S
Best for sedans, SUVs, and small delivery vans.
Shop FuelMarble
Choose Your FuelMarble
Two sizes. One proven technology. Select the product matched to your vehicle or fleet.
Which size do I need?
FuelMarble size is determined by vehicle weight and engine demand. Use this guide to choose the right unit.
2-Ton Truck
L
Standard commercial light trucks.
4-Ton to 13-Ton
L
Install two L-Size units for engines in this class.
Over 13-Ton
L
Required for heavy haulage and industrial machinery.
Not sure? Contact our team and we will advise the correct product for your specific engine or application.
FuelMarble S
For Cars & Vans
£239
The FuelMarble S is engineered for personal cars, delivery vans, and motorcycles. Simply place it in your coolant reservoir — no tools, no mechanics, no chemicals.
- Personal cars & delivery vans
- Motorcycles & compact vehicles
- Up to 20% fuel efficiency gain
- CO reduced by up to 93%
- NOx reduced by up to 98%
- Drop-in coolant installation
- Zero maintenance required
- Made in Japan
Fleet Choice
FuelMarble L
For Fleets, SUVs & Heavy Diesel
£519
The FuelMarble L is designed for SUVs, commercial fleets, haulage trucks, and heavy-duty diesel engines. Greater surface area and mineral density for larger coolant systems.
- SUVs & large diesel vehicles
- Commercial fleets & HGVs
- Up to 20% fuel efficiency gain
- DPF protection
- CO reduced by up to 93%
- NOx reduced by up to 98%
- Drop-in coolant installation
- Zero maintenance required
- Made in Japan
Every FuelMarble
What Every Product Includes
Both FuelMarble S and L share the same core Japanese engineering and independently verified performance results.
Made in Japan
Manufactured to exacting Japanese standards using precision mineral engineering.
Independent Verification
Performance independently verified by Kurume Institute of Technology, Japan and recognised testing bodies.
Zero Maintenance
Permanent installation with no refills, no chemicals, and no servicing required.
Fuel Savings from 150–200 km
Noticeable fuel economy improvement typically observed after 150–200 km of driving.
Not Sure Which to Choose?
Our team can recommend the right FuelMarble for your vehicle, fleet, or application.
Ask Our Team