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
- CTA®M24 x 2 mm Glow Plug Diesel Compression Adapter for 2800 Diesel Compression Test Kit (2800X02)M24 x 2 mm Glow Plug Diesel Compression Adapter for 2800 Diesel Compression Test Kit (2800X02) by CTA®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design...Practical and efficient solutions for pros and DIYers alikeNo more headaches, beard scratching or tool throwing$23.45
- Lang Tools®1" Injector Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-9)1" Injector Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-9) by Lang 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$63.46
- Lang Tools®3/8" Injector Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-20)3/8" Injector Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-20) by Lang 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$46.00
- Lang Tools®4-piece Analog Diesel Compression Test Set (TU-15-51)4-piece Analog Diesel Compression Test Set (TU-15-51) by Lang 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...This is a great basic set and a must have for diesel work in the American marketTester has a handy deflator for releasing air and re-testing$168.05
- Lang Tools®8-piece Analog Diesel Compression Test Set (TU15-52B)8-piece Analog Diesel Compression Test Set by Lang 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, this product will last a...Includes TU-15 gauge with easy to read red and black dialTester has a handy deflator for releasing air and re-testing$171.09
- Lang Tools®Diesel Compression Adapter Set (TU-15-71)Diesel Compression Adapter Set (TU-15-71) by Lang 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, this product will last a...Built to provide exceptional levels of durabilityDesigned to help to get your job done right$422.52
- Lang Tools®M10 x 1 mm Glow Plug Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-2A)M10 x 1 mm Glow Plug Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-2A) by Lang Tools®. Adapter with quick disconnect screws into the head of the engine in the glow plug hole. This product is made of high-quality...Designed to help to get your job done rightManufactured utilizing the highest quality materials$15.77
- Lang Tools®M10 x 1 mm Glow Plug Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-1A)M10 x 1 mm Glow Plug Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-1A) by Lang Tools®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...Designed to help to get your job done rightManufactured utilizing the highest quality materials$15.77
- Lang Tools®M10 x 1.25 mm Glow Plug Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-14)M10 x 1.25 mm Glow Plug Diesel Adapter for use with Diesel Compression Tester TU-15 by Lang Tools®. Thread adapter with quick disconnect screws into the head of the engine in the glow plug hole. This product is made of high-quality...Designed to help to get your job done rightManufactured utilizing the highest quality materials$18.65
- Lang Tools®M17 Injector Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-19)M17 Injector Diesel Adapter for use with Diesel Compression Tester TU-15 (TU-15-19) by Lang 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$53.24
- Lang Tools®Spring Lock Adapter with Small Schrader for Tu-113 Compression Tester (71315)Spring Lock Adapter with Small Schrader for Tu-113 Compression Tester by Lang 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,...Designed to help to get your job done rightManufactured utilizing the highest quality materials$30.24
- Mityvac®14 mm to 16 mm Gasoline Compression Test Adapter for MV5530 Compression Test Kit (MVA5507)14 mm to 16 mm Gasoline Compression Test Adapter for MV5530 Compression Test Kit (MVA5507) by Mityvac®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Designed to help to get your job done rightManufactured utilizing the highest quality materials$16.61
- Mityvac®Injector Analog Diesel Adapter for MV5535 Digital Diesel Compression Test Kit (MVA5619)Injector Analog Diesel Adapter for MV5535 Digital Diesel Compression Test Kit by Mityvac®. If you’re looking for a reliable solution to complete your project, this 1st-grade product is right up your alley. Designed utilizing the...Precision engineered to meet strict quality requirementsGuaranteed to offer exceptional reliability and enduring value$63.91
- Mityvac®Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5621)Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5621) by Mityvac®. Diesel engines utilize a fuel injector on each cylinder to inject fuel for combustion. Although they do not use spark plugs to ignite the...Designed to help to get your job done rightManufactured utilizing the highest quality materials$122.79
- Mityvac®Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5618)Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5618) by Mityvac®. Diesel engines utilize a fuel injector on each cylinder to inject fuel for combustion. Although they do not use spark plugs to ignite the...Designed to help to get your job done rightManufactured utilizing the highest quality materials$31.81
- Mityvac®Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5622)Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 by Mityvac®. Diesel engines utilize a fuel injector on each cylinder to inject fuel for combustion. Although they do not use spark plugs to ignite the fuel, most...Designed to help to get your job done rightManufactured utilizing the highest quality materials$30.64
- Mityvac®Injector Diesel Adapter for MV5535 Digital Diesel Compression Test Kit (MVA5601)Injector Diesel Adapter for MV5535 Digital Diesel Compression Test Kit by Mityvac®. If you’re looking for a reliable solution to complete your project, this 1st-grade product is right up your alley. Designed utilizing the finest...Precision engineered to meet strict quality requirementsGuaranteed to offer exceptional reliability and enduring value$69.04
- Mityvac®Injector Diesel Compression Test Adapter for MV5535 Digital Diesel Compression Test Kit (MVA5602)Injector Diesel Compression Test Adapter for MV5535 Digital Diesel Compression Test Kit by Mityvac®. Diesel engines utilize a fuel injector on each cylinder to inject fuel for combustion. Although they do not use spark plugs to ignite...Designed to help to get your job done rightManufactured utilizing the highest quality materials$41.83
- Mityvac®M10 x 1 Diesel Adapter for MV5534 Diesel Compression Test Kit (MVA5604)M10 x 1 Diesel Adapter for MV5534 Diesel Compression Test Kit by Mityvac®. 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$15.71
- Mityvac®M10 x 1.25 mm Glow Plug Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5614)M10 x 1.25 mm Glow Plug Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5614) by Mityvac®. Diesel engines utilize a fuel injector on each cylinder to inject fuel for combustion. Although they do not use spark plugs...Designed to help to get your job done rightManufactured utilizing the highest quality materials$19.15
- Innova®Digital Timing Light (3568)Digital Timing Light by Innova®. Top-of-the line timing light for the selective do-it-yourselfer. Split-screen digital LCD readout displays Tachometer and Advance functions simultaneously. This product is made of high-quality materials...Slim, rotating barrel for better aim at timing markDetachable leads, metal inductive pickup$82.93
- Innova®Inductive Timing Light (3551)Inductive Timing Light by Innova®. This best seller is a must have for every tune-up kit. Works with most ignition systems: DIS, conventional, electronic and computer controlled systems - domestic and imports. This product is made of...Check timing, diagnose a no-spark condition, check for electronic advance/retard and moreSlim, rotating barrel for better aim at timing mark$41.37
- Innova®Pro Digital Timing Light (5568)Pro Digital Timing Light by Innova®. If you’re looking for a reliable solution to complete your project, this 1st-grade product is right up your alley. Designed utilizing the finest materials, it delivers unmatched levels of...4-function digital LCD readout is backlit for easy viewingDisplay shows tachometer, advance functions, dwell readout, and voltage$132.37
- Merchant Automotive®Fuel Rail Pressure Sensor Wrench (10522)Fuel Rail Pressure Sensor Wrench by Merchant Automotive®. Removing and replacing the Duramax fuel rail pressure sensor switch is difficult when using standard wrenches and sockets. The sensor is mounted on the right fuel rail under the...Unique design saves timeReduce the components that need to be removed to performe service of sensor$133.75
- OTC®0 to 10 psi Diesel Fuel Pressure Gauge (6754)0 to 10 psi Diesel Fuel Pressure Gauge by OTC®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and more convenient, saving your...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$404.13
- OTC®0 to 100 psi Basic Fuel Injection Diagnostic Kit (7635A)0 to 100 psi Basic Fuel Injection Diagnostic Kit (7635A) by OTC®. Fuel Injection Diagnostic Set With these sets, you can quickly and accurately diagnose fuel pressure problems on engines that have multi-port fuel injection systems. You...Designed to help to get your job done rightManufactured utilizing the highest quality materials$160.17
- OTC®0 to 100 psi Fuel Pressure Tester Kit (FIX7818)0 to 100 psi Fuel Pressure Tester Kit (FIX7818) by OTC®. Safely test car and truck fuel pressure systems equipped with a Schrader or fuel access valve test port on the fuel line. The Fuel Pressure Tester Kit works on most domestic fuel...Large, easy-to-read scaleSolid brass fittings$54.02
- OTC®0 to 100 psi Pressure Hose (211398)0 to 100 psi Pressure Hose (211398) by OTC®. 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 deliver great...Designed to help to get your job done rightManufactured utilizing the highest quality materials$32.93
- OTC®5/16" Fuel Line Fitting Set (7628)5/16" Fuel Line Fitting Set (7628) by OTC®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and more convenient, saving your time...Will work on low or high pressure TBI systemsQuick, easy, safe. Eliminates makeshift connections that can damage plastic fuel lines or the special connector$44.85
- OTC®Fuel Injector Noid Light (6023)Fuel Injector Noid Light (6023) by OTC®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and more convenient, saving your time and...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$23.62
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.