Diagnostic & Testing Tools
- Code Readers & Scanners
- Anti-Freeze & Coolant Testers
- Electrical Testers
- Timing Lights
- Fuel System Testers
- Ignition Testers
- Brake Testers & Measuring Tools
- Coating Thickness Gauges
- Oil Pressure Test Tools
- Engine Compression Testers
- Diagnostic Leak Detection
- Headlight Alignment Systems
- Suspension Testers
- Vehicle Scales
- Refrigerant Identifiers
- Window Tint Meters
- Exhaust System Testers
- Auto Inspection Cameras & Scopes
Featured Brands
- Central Tools®1" to 2" Conventional Disc Brake Micrometer (6203)Universal 1" to 2" Conventional Disc Brake Micrometer by Central Tools®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Specifically designed for todays larger-sized rotorsEasier to measure across the entire braking surface$171.59
- Central Tools®50 mm Metric Standard Test Gage (6286)Universal 50 mm Metric Standard Test Gage (6286) by Central Tools®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Designed to help to get your job done rightManufactured utilizing the highest quality materials$31.79
- Central Tools®6" to 14.5" Brake Drum Gauge (6456)Universal 6" to 14.5" Brake Drum Gauge by Central Tools®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Contacts are pointedFeatures Inch and Metric Scales$211.97
- Central Tools®6" to 14.5" Brake Force Drum Gage (6469A)Universal 6" to 14.5" Brake Force Drum Gage by Central Tools®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...Digital accuracy/Swiss electronicsSelectible depth stops$713.15
- Central Tools®6" to 22" Brake Drum Wear Limit Gauge (6478)Universal 6" to 22" Brake Drum Wear Limit Gauge by Central Tools®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate...Made with precision and quality in mindBuilt to last$290.32
- Central Tools®75 mm Metric Standard Test Gage (6287)Universal 75 mm Metric Standard Test Gage (6287) by Central Tools®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Designed to help to get your job done rightManufactured utilizing the highest quality materials$35.18
- Central Tools®Brake Force Rotor/Drum Gage (6499A)Universal Brake Force Rotor/Drum Gage by Central Tools®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Made with precision and quality in mindBuilt to last$1,388.80
- Central Tools®STORM™ 0 to 3.2" Wheels On Rotor Gauge (3M336)Universal STORM™ 0 to 3.2" Wheels On Rotor Gauge by Central Tools®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Measures the rotor without removing the wheel to pre-qualify brake jobsDigital read-out with push button inch/metric conversions$117.72
- Central Tools®STORM™ 8" to 13" Jaw Adapter Set for Digital Caliper (3K300)Universal STORM™ 8" to 13" Jaw Adapter Set for Digital Caliper by Central Tools®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...Allows caliper to convert to a rotor or drum measuring gageWill measure all brake rotors or drums up to 12"$50.38
- Daytona Sensors®M18 x 1.5 mm Mild Steel Weld Bung (115003)Universal M18 x 1.5 mm Mild Steel Weld Bung by Daytona Sensors®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Expected to provide seamless service for yearsGuaranteed to deliver lasting service life$7.26
- Daytona Sensors®M18 x 1.5 mm Stainless Steel Bung Plug (115008)Universal M18 x 1.5 mm Stainless Steel Bung Plug by Daytona Sensors®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Expected to provide seamless service for yearsGuaranteed to deliver lasting service life$14.66
- Daytona Sensors®WEGO™ III Dual Channel AFR Interfaces (111004)Universal WEGO™ III Dual Channel AFR Interfaces by Daytona Sensors®. Daytona Sensors single or dual WEGO™ units feature 0-5V analog AFR outputs for interface to dyno instrumentation, vehicle data acquisition systems, and engine...Air/fuel ratio display systems with built-in data logging for single exhaust systemTuning aid for all carbureted and fuel injected engines$516.35
- Daytona Sensors®WEGO™ III Dual Channel Display Set (112005)Universal WEGO™ III Dual Channel Display Set (112005) by Daytona Sensors®. Daytona Sensors proudly offer Daytona Sensors WEGO™ Dual Channel Air/Fuel Ratio Display Systems with built-in data logging. PC Link software runs under...Air/fuel ratio display systems with built-in data logging for single exhaust systemTuning aid for all carbureted and fuel injected engines$724.21
- Daytona Sensors®WEGO™ III Single Channel AFR Display Set (112002)Universal WEGO™ III Single Channel AFR Display Set (112002) by Daytona Sensors®. Daytona Sensors proudly offer Daytona Sensors WEGO™ Single Channel Air/Fuel Ratio Display Systems with built-in data logging. PC Link software runs...Air/fuel ratio display systems with built-in data logging for single exhaust systemTuning aid for all carbureted and fuel injected engines$529.00
- Daytona Sensors®WEGO™ IV Dual Channel AFR Display (113001)Universal WEGO™ IV Dual Channel AFR Display (113001) by Daytona Sensors®. The Best Engine Control Products for Performance and Racing Enthusiasts. Dual Channel AFR Display-Dyno Mount/Dash Mount. Daytona Sensors proudly offer Daytona...Air/fuel ratio display systems with built-in data logging for single exhaust systemTuning aid for all carbureted and fuel injected engines$703.93
- Daytona Sensors®WEGO™ IV Single Channel AFR Display (114001)Universal WEGO™ IV Single Channel AFR Display (114001) by Daytona Sensors®. Daytona Sensors proudly offer Daytona Sensors WEGO™ Single Channel Air/Fuel Ratio Display Systems with built-in data logging. PC Link software runs under...Air/fuel ratio display systems with built-in data logging for single exhaust systemTuning aid for all carbureted and fuel injected engines$529.00
- Daytona Sensors®Wide-Band Exhaust Gas Oxygen Sensor (115001)Universal Wide-Band Exhaust Gas Oxygen Sensor by Daytona Sensors®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Expected to provide seamless service for yearsGuaranteed to deliver lasting service life$138.86
- Equus®8.5 mm x 39" Waterproof Videoscope Inspection System (3380)8.5 mm x 39" Waterproof Videoscope Inspection System by Equus®. The Innova 3380 2.7" Color LCD Inspection Camera is a must have tool for automotive repair work and inspections. Reach, view and inspect areas previously thought...Easily view finer details during an inspection with the high-resolution screen6 bright illumination LEDs Fully light up the inspection area$83.82
- FAST®Engine Videoscope Inspection System (1000-1140)Engine Videoscope Inspection System by FAST®. This handy tool allows you to take a peek inside the cylinder or intake ports to inspect for damage or other issues. The fiber optic camera is easy to move around inside the engine and the...High quality at an affordable priceExpertly made from premium materials$208.95
- Fluke Electronics®Carbon Monoxide Meter (CO-220)Universal Carbon Monoxide Meter by Fluke Electronics®. The Fluke CO-220 Carbon Monoxide Meter makes it easy to take quick and accurate measurements of CO levels with a single compact instrument. Quickly and accurately measure CO levels...Rugged case and electronicsLarge LCD displays CO levels from 0 to 1000 ppm$717.11
- Fluke Electronics®Up is Up™ 8.5 mm x 47.28" 180° Image Rotation Waterproof Videoscope Inspection System (4962652)Up is Up™ 8.5 mm x 47.28" 180° Image Rotation Waterproof Videoscope Inspection System by Fluke Electronics®. With Dual View Imager. Diagnostic scope with 7" LCD screen for accurate inspections in difficult to reach spaces. Adjustable...High definition probe with dual-view cameraProcessing speeds that render a smooth, clear, consistent image$2,239.04
- Fowler High Precision®0 to 16" Drum and Rotor Measuring Kit (72-010-888)Universal 0 to 16" Drum and Rotor Measuring Kit (72-010-888) by Fowler High Precision®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Measures disc brakes and up to 16" on brake drumsWhen measuring brake drums only, add 8" to measurement$57.22
- Fowler High Precision®0 to 2"(50 mm) Mark VI Electronic Indicator (54-530-175-0)Universal 0 to 2"(50 mm) Mark VI Electronic Indicator by Fowler High Precision®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...Robust constructionWater and coolant resistant$1,362.23
- Fowler High Precision®0.3" to 1.3" Vernier Disc Brake Micrometer (72-234-202)Universal 0.3" to 1.3" Vernier Disc Brake Micrometer (72-234-202) by Fowler High Precision®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Sharp black graduations on satin chrome finishRatchet thimble$53.77
- Gates®Green Pass Fuel Calibration Cap (31453)Universal Green Pass Fuel Calibration Cap by Gates®. Gates' Fuel Cap Tester can be made to be compatible with nearly any vehicle on the road with the correct adapter. This product is designed and manufactured to help you keep the fuel...For use with Radiator & Fuel Cap TestersDesigned for your fuel system maintenance$70.42
- Gates®Red Fail Fuel Calibration Cap (31445)Universal Red Fail Fuel Calibration Cap by Gates®. Gates' Fuel Cap Tester can be made to be compatible with nearly any vehicle on the road with the correct adapter. This product is designed and manufactured to help you keep the fuel...For use with Radiator & Fuel Cap TestersDesigned for your fuel system maintenance$73.07
- General Technologies®Engine Ignition Analyzer (GTC505)Universal Engine Ignition Analyzer by General Technologies®. The GTC505 Engine Ignition Analyzer is a handheld instrument designed from the ground up for the diagnosis and performance measurement of all types of spark ignition systems,...Designed to help to get your job done rightManufactured utilizing the highest quality materials$299.89
- General Technologies®Oxygen Sensor Tester Simulator (ST05)Universal Oxygen Sensor Tester Simulator by General Technologies®. This high-tech, user friendly Oxygen Sensor Tester/Simulator model from General Technologies Corp/Sheffield Research sports a simple interface to perform diagnostic...The sensor signal output is shown in real time on the bar graph, while a 2 digit alphanumeric display shows the sensor output cross count per secondBy pressing the 'Test' button and performing a snap throttle acceleration of the engine, it tests the response time of the sensor and shows a pass or fail result within seconds.$121.79
- General Tools®9 mm x 39.37" 180° Image Rotation Waterproof Videoscope Inspection System (DCS-400-09)9 mm x 39.37" 180° Image Rotation Waterproof Videoscope Inspection System by General Tools®. The #DCS400-09 Wireless Recording Video Inspection Camera/Borescope with 3.5" Screen and 9 mm Probe is ideal for making high-quality video...Color LCD4x zoom and 180° video flip buttons on monitor$418.25
- General Tools®The Seeker™ 100 Series™ 12 mm x 39.36" Wi-Fi Videoscope Inspection System (DCS100)The Seeker™ 100 Series™ 12 mm x 39.36" Wi-Fi Videoscope Inspection System by General Tools®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Built-in radio transmitter wirelessly transmits live video signal to the RCV100 USB video receiver up to 10 m away, enabling the video to be viewed on a Windows PC and streamed live over the InternetWorks with Windows (XP, Vista, 7)$149.32
With today’s high-tech computer and electronics packed vehicles, electronic testers and diagnostic equipment have become the main weapons in the vehicle service arsenal, so we’ve stocked our digital shelves with scan tools, multimeters, analyzers and much more. When you’re armed with these electronic tools, you’ll be able to defeat any CHECK ENGINE light, blown fuse, balky window, recalcitrant alternator, or any other electrical malfunction with ease.
Electronic testers range from simple jumper wires, also called test leads, to sophisticated engine scan tools. Test leads allow you to bypass a circuit and directly test a component by applying 12 volts from the battery. Test lights, also called circuit testers, are essential tools for determining whether voltage is present at particular points in circuits. There are circuit powered and self-powered test lights, also known as continuity testers.
Test lights can tell you whether voltage is present, but they can’t tell you how much. For specific values you need a voltmeter, which is routinely packaged with an ohmmeter and ammeter in an electronic tester called a multimeter. There are analog meters that have a needle and a scale, but Digital Multi-Meters (DMM), also known as Digital Volt Ohm Meters (DVOM) are necessary for computer controlled circuits. Voltmeters can display the amount of voltage, such as when testing a battery or charging system, and test voltage drop. Ohmmeters measure resistance in a circuit and ammeters measure current flow.
A scan tool provides access to your vehicle’s computer control system via a cable connected to the Data Link Connector (DLC). With a scan tool you can read the Diagnostic Trouble Codes (DTCs) that cause CHECK ENGINE, Air Bag, and ABS dash lights to illuminate. Tool capability varies, and some can also read, record, and playback sensor data, display I/M monitor status, read and display freeze frame data, download to a PC, and be updated via USB port. In addition to erasing DTCs, some scan tools can also be used to reset oil lights and other warning lights.
Along with the above mentioned essentials, we also have many more diagnostic time savers including noid lights to check fuel injectors, current probes to measure current without disturbing the circuit, battery testers, infrared thermometers for instantaneous temperature indication, inspection cameras for peaks into the smallest places, and much more. And if you have an older, pre-computer controlled vehicle we have the tools you need to make adjustments and keep your vehicle running right, like timing lights to check initial timing and timing advance, and dwell/tachs to set breaker points and idle speed.