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Overseas Solution Services offers high quality products for diesel engine repair and rebuild and/or fuel economy improvements. These products are made in the United States of America and are offered to our customers in Central and South America.
OSS Diesel gives customers a premium Hydrogen on demand fuel cell system, along with one of our fastest delivery time at a lower cost, making our product one of the most economical. As people and businesses around the world become more pollutant free and move to a greener society, OSS Diesel offers products, such as the Hydrogen on demand fuel cell system that will make your automobile or truck more environmentally friendly and more fuel efficient.
Questions and technical support are available to you by either telephone or email. Click here to send us your question through our contact page.
The staff members of Overseas Solutions Services are committed to bringing our customers high quality products and the best possible service. We want to be your premier online market place for all your Hydrogen on demand fuel cell needs.

HHO System Complete Kits

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HHO Standard Kit Unit (Small)
Our Hydrogen Systems comes complete with everything that you see in the photo, which is all you need to do a full installation. Actual dimension of the Black Box ix 2” x 4.5” x 7” and will work on any size engine or vehicle, V-10, V-8, V-6, 4cyl. or Diesel.
Price $900.00
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HHO Double Kit Unit (Large)
This unit is a complete Double Cell Hydrogen generator system for your large diesel or gasoline engines. It is 2 of our standard units combined into 1 cell. Actual dimension of the Black Box is 4” x 4.5” x 7”. This kit includes an Amp Meter.
Price $1,100.00
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HHO System Replacement Parts


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| HHO Standard Generator
Our standard Hydrogen generator cell is a stand-alone kit and is designed to fit into the space between the front grill and the radiator in almost every vehicle.
This is recommended for all V-8 Engines, 6 cylinders and smaller engines, including carbureted, fuel injected or turbo diesel engines. Actual dimensions are 2”thick x 4.5” wide x 7”tall.
Price $814.00
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| HHO Double Generator
The double cell Hydrogen generator is sold as a stand-alone product. This Hydrogen Generator is sold separately and does not include the installation kit.
This unit is recommended for large engines, semi-trucks, large RVs, or heavy equipment including diesel, gas, carbureted or fuel injected engines. Actual dimensions are 4” thick x 4.5” wide x 7”tall.
Price $1,074.00
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| HHO Standard Water Tank
The HHO Standard Water Tank capacity is 2 liters or approximately 2 quarts of water.
Price $76.00
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| HHO Larger Water Tank
The HHO Large Water Tank capacity is 4.5 liters or approximately 5 quarts of water.
Price $90.00
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| HHO Water Trap Tank
The HHO Water Trap Tank is made to catch any condensation and the holding capacity is 8 ounces.
Price $76.00
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Narrow Band EFIE


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| Quad Digital EFIE Basic
This is recommended for about 90% of all vehicles, including all American and foreign cars older than 1997 and most foreign cars after 1997. We recommend Digital EFIEs for all narrow band oxygen sensors that are upstream of the catalytic converter.
Price $188.00
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| Wide Band EFIE
This is designed to specifically for use with wide band oxygen sensors. It will work with all types of wide band and AFR (Air/Fuel Ratio) sensors. This is the choice for both 4 or 5-wire oxygen sensors.
Price $168.00
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| Dual Wide Band / Dual Analog Combo
This is designed to be used with downstream oxygen sensors.
Many manufacturers are using downstream sensor information in their air/fuel calculations.
Price $232.00
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| Dual Wide Band / Single Analog Combo
This comb package lets you treat up to 2 upstream wide band sensors and a single downstream sensor.
Note that this package includes a single EFIE deluxe.
Price $211.00
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Analog EFIE

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| Single EFIE Deluxe
This single version handles one oxygen sensor and includes an enclosure, on/off switch, an external adjustment, and test ports where you can plug in your multi-meter leads.
Price $144.00
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| Dual EFIE Deluxe
This dual electronic fuel injection enhancer handles two oxygen sensors. You are able to adjust the amount of each EFIE circuit modifies its oxygen sensor’s output.
Price $173.00
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EFIE Basic Series

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| Single EFIE Basic
This model is the same electronics as the deluxe series, but instead of having a case, the circuit board is dipped in rubber. The adjustment potentiometer is mounted on the board. This unit does not have the convenience of the deluxe model, but is more economical.
Price $127.00
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| Dual EFIE Basic
The dual EFIE basic is a rubber dipped circuit board that has 5” hookup wires for connection to: Power, Ground, Oxygen Sensor, and Computer.
The dual model has 2 wets of sensor and computer wires.
Price $136.00
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EFIE Circuit Boards


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| Single EFIE Circuit Board
This includes the circuit board with 5” hookup wires for connection to Power, Ground, Oxygen Sensor, and Computer.
It has a potentiometer mounted on the PCB (Printed Circuit Board) to set the amount that the EFIE will alter the sensor's signal. The board dimensions are: 1-1/6" (W) x 2-1/8" (L) x 11/16" (H). The length dimension includes the wiring harness.
Price $121.00
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| Dual EFIE Circuit Board
The circuit board series includes just the circuit board with 5” hookup wires for connection to Power, Ground, Oxygen Sensor, and Computer.
The dual version has 2 sets of sensor and computer wires. The board dimensions are 1-7/6”W x 2-3/8” L x 11/16” H. The length dimension includes the wiring harness.
Price $129.00
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