DUOYI best sellers

#1 Fuel Injector Cleaner DUOYI Fuel Injector Cleaner Kit Universal Fuel Injector Tester And Cleaner Kit,8 Pulse Modes Fuel Injector Cleaning Kit,DIY Fuel Injector Cleaner Tool with 6 Size Cleaning Adapters,12V/5V Output Power

$22.99 on Amazon

#2 Power Circuit Probe Tester DUOYI Power Circuit Probe Tester 6V-24V DC Test Light Automotive Circuit Tester 12V Auto Electrical Tester 12 Volt Component Activation, Polarity Identify, with LED Light, 13FT Cable, Overload Protection

$17.99 on Amazon

#3 🔥 6Pcs Wiper Arm Puller DUOYI 6Pcs Wiper Arm Puller Doesn't Damage The Wiper Arm Removal Tool Strong Structure Windshield Wiper Arm Removal Tool with Toolbox Battery Terminal Puller Compatible with VW/BMW/Ford/Honda/Porsche

$45.99 on Amazon

#4 Coolant Overflow Tank DUOYI Coolant Overflow Tank 2L Universal Coolant Reservoir Tank Aluminum Radiator Overflow Tank Visible Coolant Level Radiator Expansion Tank Used To Prevent Coolant Leakage Coolant Recovery Tank

$39.99 on Amazon

#5 🔥 Exhaust Back Pressure DUOYI Exhaust Back Pressure Tester 2.5" HD Pressure Gauge Exhaust Back Pressure Gauge Kit with 6ft Hose Oil Pressure Gauge Shockproof Rubber Cover Exhaust Pressure Gauge,Car Exhaust Pressure Tester

$27.99 on Amazon

#6 Bearing Puller No Damage DUOYI Bearing Puller No Damage to Bearing Puller Kit 36-in-1 Wheel Bearing Removal Tool Gear Puller Set with 3 Jaw Puller Set Bearing Separator Blind Hole Bearing Puller Set Internal Bearing Puller Tool

$49.99 on Amazon

#7 🔥 Manometer Gas Pressure DUOYI Manometer Gas Pressure Tester ±241.3Kpa/35Psi Wide Range Digital Manometer Lp Gas Pressure Tester with 11 Pressure Units, MAX/MIN/AVG Measurement, Data Storage/Hold, 9V Battery

$45.99 on Amazon

#8 Digital Earth Ground DUOYI Digital Earth Ground Resistance Tester 0-2000 ohm Meter AC Ground Voltage Tester Quick Response Earth Resistance Tester Overload Protection Voltage Meter Tester with Tool Bag

$74.99 on Amazon

#9 🔥 Upgraded Compression DUOYI Upgraded Compression Ring Removal Tool Not Damage Copper Pipes/Brass Nuts Ferrule Puller for NPT 1/2” 3/4” Pipe Olive Puller Removal Tool Anti-Rust Ferrule Removal Tool Compression Sleeve Puller

$17.99 on Amazon

#10 🔥 Brake Master Cylinder DUOYI Brake Master Cylinder Bleeder Kit 12Pcs Brake Bleeder Adapter with Japanese Quick Connector Master Cylinder Adapter Set Brake Pressure Bleeder Adapter Kit Fit for Toyota/Ford Master Cylinder Adapter

$79 on Amazon

#11 DUOYI Refrigeration Digital DUOYI Refrigeration Digital Manifold Gauge Set HVAC Vacuum Pressure Temperature Tester Kit Air Conditioning R134a Refrigerant Freon Diagnostic Tool

$155.99 on Walmart

#12 Olive Puller Not Damage DUOYI Olive Puller Not Damage The Pipe Olive Remover Ferrule Puller Corrosion-Resistant Compression Ring Removal Tool Suitable for Brass Pipes with Diameters of NPT 1/2" & NPT 3/4" Ferrule Removal Tool

$17.99 on Amazon

#13 Upgraded Earth Resistance DUOYI Upgraded Earth Resistance Tester 0.03-2000Ω Digital Earth Ground Resistance Tester Ohm Meter 600V AC Ground Voltage Tester Auto Measurement Earth Tester with LCD Display,Tool Bag, Batteries

$89.99 on Amazon

#14 Heated Blanket DUOYI Heated Blanket

$20.99 on Amazon

#15 Refrigeration Digital DUOYI Refrigeration Digital Manifold Gauge Set for Air Conditioning/Refrigerator Digital Gauges HVAC with Double Pressure&Temp Test Manifold Digital, HVAC Gauges with Hose, Temperature Control Clip, Toolbox

$119.99 on Amazon

#16 Digital Manifold Gauges DUOYI Digital Manifold Gauges HVAC for 93 Refrigerant Digital Gauges HVAC pressure&Temp Test Air Conditioning Tools & Equipment Supercooling/Superheating Test,for Cold Storages/Refrigerators AC Recharge Kit

$129.99 on Amazon

#17 Axle Spindle Rethreading DUOYI Axle Spindle Rethreading Tool Set Repair/Cleaning Threading Tools High-Strength Tools Set Easy To Store Thread Restorer Use With 1-1/4" Socket Mechanic Tool Set For M20,22,24 13/16 3/4x20 UNF

$25.99 on Amazon

#18 Flaring Tool Kit Precision DUOYI Flaring Tool Kit Precision Flaring Tool HVAC 45 Degree Eccentric Flaring Tool Copper Flaring Tool Single Flare Tool for Copper Tubing/Aluminum Copper Pipe Expander Tool with 5 Flare Clamps

$229 on Amazon

#19 Updated Fuel Injector DUOYI Updated Fuel Injector Tester - Dual Channel Cleaner Kit, 8 Pulse Modes, Short Circuit Protection, 40" Power Cord, 4 Injector Adapters

$22.99 on Amazon

#20 Olive Puller for G1/2 DUOYI Olive Puller for G1/2 & G3/4 Ferrule Removal Tool Not Damage The Pipe Ferrule Puller Abrasion & Corrosion-Resistant Compression Sleeve Puller Labor-Saving Compression Ring Puller Plumbing Tools

$17.99 on Amazon