Top HHO & Fuel Efficiency Products
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HHO Kits
20 products
HHO Hydrogen Generator Kit – Dry Cell 6-Plate
Complete 6-plate dry cell HHO kit with everything needed to boost fuel economy on 4-cylinder engines. Stainless steel construction, includes bubbler, vacuum hose, and installation guide.
HHO Generator Kit 12-Plate Dry Cell for Diesel Trucks
Heavy-duty 12-plate dry cell HHO system designed for diesel trucks and large engines. Produces up to 2 LPM of HHO gas for significant MPG improvements.
Complete HHO Car Kit with PWM Controller & EFIE
All-in-one HHO system with pulse width modulation controller and Electronic Fuel Injection Enhancer for modern fuel-injected vehicles.
Hydrogen Generator HHO Dry Cell – High Output 2 LPM
High-output 2 LPM dry cell generator made from 316L stainless steel. Gasket-sealed design prevents electrolyte leaks and handles up to 30 amps.
HHO Fuel Saver Kit with Digital Amp Meter
Budget-friendly HHO fuel saver kit that includes digital ammeter for monitoring current draw. Ideal for beginners experimenting with HHO technology.
HHO Electrolyzer Stainless Steel Cell 316L
Professional-grade 316L stainless steel electrolyzer cell. Corrosion-resistant plates with maximum surface area for efficient HHO production.
HHO Bubbler Water Trap Reservoir Safety Kit
Essential safety component for any HHO system. Prevents backfire and filters impurities before HHO gas enters the engine air intake.
PWM Pulse Width Modulation Controller for HHO
Adjustable PWM controller lets you fine-tune amps drawn by your HHO cell. Extends plate life and improves efficiency. 12V/24V compatible.
EFIE Electronic Fuel Injection Enhancer – Single O2
Single oxygen sensor EFIE tricks your car's ECU into reducing fuel delivery after HHO installation. Compatible with most OBD-I and OBD-II vehicles.
HHO Dual EFIE with MAP Sensor Enhancer
Dual O2 sensor EFIE plus MAP/MAF enhancer for vehicles that need both upstream and downstream oxygen sensors adjusted after HHO installation.
KOH Potassium Hydroxide Electrolyte – 2 lb Food Grade
Pure food-grade potassium hydroxide for use as HHO electrolyte. Creates superior conductivity compared to baking soda for maximum HHO output.
HHO Generator Mounting Bracket Universal Kit
Heavy-duty adjustable mounting bracket fits most HHO generator cells. Works under the hood on virtually any vehicle with included hardware.
Water Injection Reservoir Tank 1L with Level Sensor
One-liter reservoir for HHO or water injection systems. Transparent body lets you monitor fluid levels easily. Includes bung fittings.
HHO Check Valve Anti-Backfire Inline Safety
Inline one-way check valve prevents dangerous backfire from reaching your HHO cell. Must-have safety component for any HHO installation.
HHO 9-Plate Dry Cell Kit with Complete Wiring Harness
9-plate configuration balances HHO output and power consumption. Complete kit includes all wiring, fuses, relay, and tubing for a clean installation.
Mini HHO Generator Kit for Small Engines & Motorcycles
Compact HHO generator designed for motorcycles, ATV, and small 4-cylinder engines under 1600cc. Lightweight, easy installation.
HHO Vaporizer Water Vapor Injection System
Converts water into micro-vapor for injection into the air intake. Cools combustion temperatures and can improve detonation resistance.
Stainless Steel 316L HHO Plates – 6-Pack 4x6 Inch
Replacement or DIY build plates machined from 316L stainless steel. 4×6 inch size, laser-cut precision edges, and pre-drilled center holes.
HHO Generator Complete Truck Kit 1500–3500 Series
Full truck-grade HHO system rated for 5.0L to 6.7L engines. Includes large 12-plate cell, dual PWM, heavy-duty relay, and brackets.
HHO Fuse Relay Wiring Kit 30A with Toggle Switch
Safety wiring kit for HHO installations. 30-amp relay, in-line fuse holder, and on/off toggle switch allow safe, clean electrical connection.
Fuel Monitors
10 products
ScanGauge II Real-Time Fuel Economy Monitor
Plug-and-play OBD-II gauge displays instant MPG, trip MPG, coolant temp, and 4 other engine parameters simultaneously. Works with any 1996+ vehicle.
Ultragauge MX Fuel Economy Trip Computer
Comprehensive trip computer shows fuel cost, fuel used, acceleration, MPG history, and over 80 engine parameters. Color touch screen display.
PLX Devices Kiwi 3 Bluetooth OBD-II Fuel Monitor
Pairs with iPhone and Android to display live fuel economy data, check engine codes, and log trips. Works with Torque and DashCommand apps.
Flowscan Fuel Flow Meter Marine & Auto
Precision turbine-based fuel flow meter measures actual fuel consumption in real time. Works on gasoline and diesel engines.
Innova 3160g OBD-II Scanner with Live Data
Professional code reader displays freeze frame data and live stream engine parameters including fuel trim values critical for HHO tuning.
HUD Head-Up Display Speedometer Fuel Consumption
Projects speed, RPM, fuel consumption, and engine temperature onto your windshield. OBD-II plug-and-play, no wiring required.
Vgate iCar Pro Bluetooth 4.0 OBD Adapter
Compact Bluetooth 4.0 OBD-II adapter compatible with iOS and Android. Pairs with Torque Pro, OBD Fusion, and other apps for real-time fuel data.
Fuel Economy Computer Digital Trip Gauge
Standalone digital trip computer wires into fuel injector signal for precise fuel consumption calculation without OBD port dependency.
OBD Link MX+ Professional OBD-II Adapter
Professional-grade Bluetooth OBD adapter with the fastest protocol response times available. Unlocks manufacturer-specific PIDs for deeper fuel analysis.
Air-Fuel Ratio Wideband O2 Sensor Gauge Kit
Wideband AFR gauge kit with Bosch LSU 4.9 sensor gives precise lambda readings for optimal fuel mixture tuning on HHO-equipped vehicles.
OBD2 Scanners
8 products
Autel MaxiCOM MK906BT Professional Diagnostic Scanner
Professional-grade bi-directional diagnostic scanner with advanced coding, adaptations, and all-system coverage. The ultimate HHO tuning companion.
LAUNCH CRP129E OBD2 Scanner 4-System Diagnostic Tool
Reads and clears codes from engine, transmission, ABS, and SRS. Displays live data streams including fuel trims, O2 sensor voltages, and load values.
Bluedriver Bluetooth OBD2 Scanner for iOS & Android
Award-winning Bluetooth scanner with repair reports, live data, freeze frame, and enhanced diagnostics. Works with free BlueDriver app.
FOXWELL NT301 OBD2 Code Reader with Live Data
Reliable OBD2 code reader with I/M readiness status, O2 sensor test, and live data graph. Ideal for monitoring fuel system parameters on HHO vehicles.
Veepeak OBDCheck BLE Bluetooth OBD2 Adapter
Compact Bluetooth LE adapter that pairs with CarScanner, OBD Fusion, and Torque Pro. Reads all standard OBD-II PIDs including fuel trims and load.
Innova 5610 CarScan Professional Diagnostic Scanner
All-system scanner with bidirectional tests, oil reset, TPMS reset, and SRS reset. Color display shows live sensor data for precision HHO tuning.
Topdon ArtiLink 600 OBD2 Code Reader
Affordable yet comprehensive code reader with DTC lookup, I/M readiness, O2 monitor, and EVAP system test. Great beginner tool for HHO diagnostics.
Bosch OBD 1300 Scan Tool with Code Connect
Bosch scan tool with Code Connect database of 8.5 million confirmed fixes. Helps diagnose why your HHO-related O2 sensor or fuel trim codes are triggered.
Air Intakes
10 products
K&N 77-Series High Performance Cold Air Intake
K&N's cold air intake system routes cooler, denser air to the engine for improved throttle response and up to 15 more horsepower. Washable reusable filter.
AEM Cold Air Intake System Braidless
AEM cold air intake with their durable Dryflow air filter. Dyno-proven gains in horsepower and torque on most applications. No oil required.
Spectre Performance Cold Air Intake Kit
Budget-friendly Spectre cold air intake with reusable HPR air filter. Improves airflow while filtering dust and debris from the engine air supply.
Injen Technology SP Series Cold Air Intake
Injen's SP series uses MR Technology to optimize airflow characteristics for the specific engine application. Polished or wrinkle black finish available.
Universal 3-Inch Cold Air Intake Pipe Kit with Filter
Universal 3-inch aluminum cold air intake pipe with high-flow cone filter. Suitable for custom builds or vehicles without brand-specific kits.
K&N Air Filter High Performance Replacement
Drop-in replacement air filter increases airflow up to 50% compared to stock paper filters. Wash and reuse for up to 1 million miles.
Airaid Cold Air Intake System with SynthaMax Filter
AIRAID's dry SynthaMax filter requires no oiling and provides excellent filtration. Full cold air intake kit with heat shield included.
Turbo Intake Pipe Intercooler Charge Pipe Kit
Silicone and aluminum intercooler pipe kit for turbocharged vehicles. Reduces pressure drop between turbo and intake manifold for improved boost delivery.
Vortech Supercharger Air to Water Intercooler Kit
Complete air-to-water intercooler system for supercharged applications. Dramatically reduces charge temperature for maximum density and power.
Mass Air Flow Sensor Cleaner CRC MAF Sensor Spray
Quickly cleans dirty MAF sensor readings that cause rich fuel trims and poor economy. Critical maintenance for any vehicle with a MAF-based fuel system.
Water Injection
10 products
Snow Performance Stage 2 Water-Methanol Injection Kit
The industry-leading water-methanol injection kit for turbocharged and supercharged vehicles. Includes boost-referenced controller and 200-psi pump.
AEM V2 Water/Methanol Injection Kit – Multi-Input
AEM's advanced multi-input controller uses boost, throttle, and RPM to precisely control methanol injection. Eliminates detonation on forced induction engines.
Aquamist HFS-4 Water Injection System
British-engineered HFS-4 system with fail-safe solenoid valve and adjustable injection point. Used by professional tuners worldwide.
Coolingmist Diesel Water Injection Kit
Dedicated diesel water injection kit reduces EGT and soot output while improving turbo response. Compatible with all common rail diesel engines.
Methanol Injection Nozzle Set – 250cc to 1000cc
Set of 4 methanol injection nozzles from 250cc to 1000cc flow rates. Stainless steel with brass insert for corrosion resistance and precise atomization.
Water Injection Pump 200 PSI Brushless Motor
High-pressure 200-psi brushless pump for water and methanol injection systems. Self-priming, corrosion-resistant, rated for M100 methanol.
Ice Water Injection Intercooler Spray Kit
Sprays a fine water mist onto your intercooler for instant charge air cooling. Reduces intake temps by up to 40°F for more power on hot days.
Water-Methanol Mix 50/50 Premixed 1 Gallon
Ready-to-use 50% distilled water and 50% methanol mix. No measuring or mixing needed. Compatible with all water-methanol injection systems.
Boost Controller Adjustable Manual 1–30 PSI
Manual boost controller with ball-and-spring design. Simple installation lets you raise boost pressure to maximize gains from water injection.
Low Fluid Level Alert Sensor for Water Injection Tank
Float-type low level sensor with LED dash warning light. Alerts you before your water-methanol tank runs empty to prevent engine damage.
Fuel Additives
10 products
Lucas Oil 10013 Fuel Treatment 1 Gallon
Popular fuel treatment and injector cleaner that lubricates the upper cylinder area. Regular use can improve fuel economy by up to 14%.
Seafoam SF-16 Motor Treatment – 16 oz
Multi-purpose fuel and oil additive that cleans carburetors, injectors, and combustion chambers. Helps eliminate rough idle and improves MPG.
Royal Purple 11722 Max-Clean Fuel System Cleaner
One-time use concentrated fuel system cleaner increases octane rating, reduces emissions, and can restore up to 4% fuel economy lost to deposits.
Red Line Complete SI-1 Fuel System Cleaner
Professional-grade PEA-based fuel system cleaner. Dissolves gum, varnish, and carbon deposits from injectors, valves, and combustion chambers.
BG 44K Platinum Fuel System Cleaner Power Enhancer
Professional-use BG 44K is trusted by automotive technicians to restore peak engine performance and fuel economy in a single treatment.
Gumout All-In-One Fuel System Cleaner – 10 oz
One-step treatment removes deposits from entire fuel system including the fuel pump, tank, lines, injectors, and combustion chamber.
Diesel Kleen +Cetane Boost 1 Gallon
Power Service's Diesel Kleen improves diesel cetane rating by up to 6 numbers, cleans injectors, and can improve fuel economy by 8% in dirty injectors.
Techron Concentrate Plus Fuel System Cleaner
Chevron's proprietary Techron additive formula cleans and protects entire fuel systems. Recommended by major automakers worldwide.
Archoil AR6200 Fuel Treatment 16oz
PTFE-containing combustion modifier improves fuel atomization, reduces friction, and is especially popular with Ford 6.0 and 6.4 Powerstroke diesel owners.
Sta-Bil 22214 Storage Fuel Stabilizer 32 oz
Keeps fuel fresh for up to 24 months in stored vehicles. Prevents gum and varnish from forming in carburetors and injectors during storage.
Maintenance Tools
12 products
Digital Multimeter Fluke 117 Electricians True RMS
Fluke 117 true-RMS multimeter is essential for setting up and troubleshooting HHO systems. Tests voltage, current, resistance, and continuity.
Clamp Meter DC Current 600A Digital Multimeter
DC clamp meter lets you measure HHO generator current draw without cutting wires. Essential for optimizing PWM settings.
Fuel Injector Cleaner Kit Professional Pulse-Type
Pulse-type injector cleaner connects to fuel rail and runs cleaner fluid directly through each injector for thorough deposit removal.
Compression Tester Kit 8-Piece with Adapters
Cylinder compression test kit identifies worn rings and valves that waste fuel. Leaking combustion is the number one enemy of fuel economy.
NGK Iridium IX Spark Plugs – Set of 4
NGK Iridium IX plugs deliver a more complete spark for full combustion. Fresh plugs are essential before installing an HHO system for accurate MPG baselines.
Denso Iridium Long Life Spark Plugs 4-Pack
Denso iridium plugs feature a 0.4mm ultra-fine electrode for improved ignitability and 40% better fuel efficiency vs standard copper plugs.
Throttle Body and Intake Cleaner CRC 05078
Fast-acting throttle body cleaner removes carbon deposits from throttle plate and bore. Clean throttle body reduces stalling and improves idle quality.
Oxygen Sensor Socket 3/8-Inch Drive 22mm
Specialty O2 sensor socket with wire slot for easy removal and installation. Essential when adjusting or replacing oxygen sensors for HHO EFIE tuning.
Motorcraft Mercon LV Transmission Fluid (6 Quarts)
Factory-spec automatic transmission fluid ensures the transmission shifts efficiently, contributing to overall drivetrain fuel economy.
Mobil 1 Full Synthetic Motor Oil 5W-30 – 5 Quart
Full synthetic motor oil reduces internal engine friction for measurable fuel economy improvements over conventional oil. Recommended for HHO-equipped engines.
Tire Pressure Monitoring System (TPMS) External
External TPMS sensor kit for all 4 tires. Properly inflated tires can improve fuel economy by up to 3%. Display shows real-time pressure and temperature.
EGR Valve Cleaner CRC 05606 16 oz
Specialized EGR cleaner removes carbon buildup from EGR valves and passages. A clean EGR system ensures proper exhaust gas recirculation for emission compliance and MPG.
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