Semi Truck 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
- Lang Tools®Retractable Test LeadsUniversal Retractable Test Leads by Lang Tools®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering...Retractable test leads pull out and stay at desired length and rewind into its own protective case when not in useDesigned for your maintenance needs$14.56 - $29.43
- Lisle®Deluxe Relay Tester SetUniversal Deluxe Relay Tester Set by Lisle®. Includes 8 Jumpers to Fit Most Popular Relays. Also Includes Test Lead Kit and Relay Puller Pliers. Jumpers have tabs for clamping and flat pads to place test leads on. No need to pierce...Designed for your maintenance needsMade from high-grade material for a long lifespan$155.82
- Lisle®Replacement BulbUniversal Replacement Bulb by Lisle®. 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$3.45 - $4.11
- Longacre®Replacement Screw-In Steel Swivel FeetsUniversal Replacement Screw-In Steel Swivel Feets by Longacre®. This top-notch product is designed to help you get in the know of the vehicle’s weight. Made from superior materials, it will provide you with the utmost in quality,...1/2" - 13Designed to help to get your job done right$49.99 - $104.99
- Mastercool®Combustion Gas Leak Tester KitUniversal Combustion Gas Leak Tester Kit by Mastercool®. 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...Dual chamber for improved accuracy and to reduce the risk of coolant contaminating the testWorks on gasoline & diesel engines$72.78 - $89.51
- Mastercool®Raptor Refrigerant Leak DetectorUniversal Raptor Refrigerant Leak Detector by Mastercool®. 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...Digital Signal Micro ProcessorVisual Leak Level Indicator$194.44 - $288.94
- Mastercool®Refrigerant Visual Inspection Sight GlassUniversal Refrigerant Visual Inspection Sight Glass by Mastercool®. The condition of the refrigerant in your A/C system is an important factor in the proper operation of all components and overall cooling efficiency. The only way to...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$150.51 - $164.96
- Milton®Battery TesterUniversal Battery Tester by Milton®. 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 quality...Tests 6 and 12 volt batteriesAnalog display is easy to read$52.11 - $69.41
- Milton®Circuit TesterUniversal Circuit Tester by Milton®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering features and...Designed for your maintenance needsMade from high-grade material for a long lifespan$10.19 - $15.02
- OTC®Charged Air Cooler TesterCharged Air Cooler Tester by OTC®. This is the easy way to find air leaks in the charged air cooler systems used on class 7 and 8 truck engines. The tester features a large 2-1/2", 0-60 PSI pressure gauge, regulator and relief...Superior grade materials for unbeatable safety and comfortExpertly crafted utilizing advanced technologies$359.08
- OTC®Oil Pressure AdapterOil Pressure Adapter by OTC®. This product is manufactured to help you maintain and service your oil system. It will make it easier to keep the oil pressure under control for smooth and safe operation of the system. The product is made...Manufactured for your oil system maintenanceBuilt to enhance your productivity$92.65
- Power Probe®3CS™ Circuit TesterUniversal 3CS™ Circuit Tester by Power Probe®. 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...Digital voltmeterRelay and component tester$139.78
- Power Probe®3EZ™ Circuit TesterUniversal 3EZ™ Circuit Tester by Power Probe®. The Power Probe 3EZ is a Digital Voltmeter that provides diagnostic power with the flip of a switch. This tool simplifies the testing of fuse boxes, verifies correct operation of motors,...Voltage & Polarity testingContinuity testing$172.08
- Power Probe®Circuit Tracer and Short Finder KitUniversal Circuit Tracer and Short Finder Kit by Power Probe®. The ECT3000 Electrical Short and Open Finder makes locating shorts and opens quickly and more accurately than ever before. When the ECT3000 Transmitter is connected to an...Trace Out a Short Circuit to Chassis GroundTracing Out a Battery Drain or Current Draw$137.23 - $211.18
- Power Probe®Extension WireUniversal Extension Wire by Power Probe®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering features and...Designed for your maintenance needsMade from high-grade material for a long lifespan$21.63 - $121.93
- Power Probe®PP 3™ Circuit TesterUniversal PP 3™ Circuit Tester by Power Probe®. 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$179.31 - $254.11
- Power Probe®Probe TipUniversal Probe Tip by Power Probe®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering features and...Designed for your maintenance needsMade from high-grade material for a long lifespan$13.56 - $17.38
- Robinair®Replacement A/C DyeUniversal Replacement A/C Dye by Robinair®. Keep your pride and joy running in tip-top shape with this top-grade automotive product. With it, you can easily and reliably check your vehicle for leaks to ensure its dependable and...Pinpoint leaks in A/C systemsOEM-approved and SAE-certified dye$49.56 - $59.12
- Robinair®Tracker A/C Fluorescent DyeUniversal Tracker A/C Fluorescent Dye by Robinair®. Keep your pride and joy running in tip-top shape with this top-grade automotive product. With it, you can easily and reliably check your vehicle for leaks to ensure its dependable and...Brightest dyes in the industry to help find leaks fasterExceeds all industry performance standards$26.67 - $78.54
- S&G Tool Aid®Analog GaugeUniversal Analog Gauge by S&G Tool Aid®. 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$23.32 - $73.73
- S&G Tool Aid®Automatic Transmission and Engine Oil Pressure TesterUniversal Automatic Transmission and Engine Oil Pressure Tester by S&G Tool Aid®. 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...Manufactured for your oil system maintenanceBuilt to enhance your productivity$49.09 - $118.65
- S&G Tool Aid®Fuel Injection Pressure TesterFuel Injection Pressure Tester by S&G Tool Aid®. Test gasoline fuel pump pressure on most domestic and imported fuel injection equipped vehicles. Kit contains adapters to test all GM vehicles with Multi-port and some Throttle Body...Test all Chrysler cars with Multi-port turbos and some TBIUse on older Ford TBI systems not equipped with small Schrader test valve$79.52 - $149.51
- SUR&R®Inline Schrader™ ValveUniversal Inline Schrader™ Valve by SUR&R®. Provides Easy Access For Connecting Fuel System Testing And Cleaning Equipment. Problem - Hard-to-access or non-existent Schrader™ valves make it difficult to connect fuel system...Fits virtually any vehicleProvides a permanent valve location that is easy to access$26.19 - $28.49
- SUR&R®Nylon to Nylon Reducer ConnectorUniversal Nylon to Nylon Reducer Connector by SUR&R®. 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...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$12.56 - $13.02
- SUR&R®Rubber Hose to Nylon ConnectorUniversal Rubber Hose to Nylon Connector by SUR&R®. 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...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$13.58 - $13.79
- Solar®Digital Battery and Electrical System TesterDigital Battery and Electrical System Tester by Solar®. 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$67.27 - $260.56
- Standard®Handypack™ Battery Test ClipsUniversal Handypack™ Battery Test Clips by Standard®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs,...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$2.59 - $4.29
- Stant®Fuel Cap Testing AdapterFuel Cap Testing Adapter by Stant®. 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$9.91 - $28.92
- Stant®Fuel Cap Testing Calibration CapUniversal Fuel Cap Testing Calibration Cap by Stant®. 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...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$69.69 - $70.22
- Supercool®A/C Total Leak Stop SyringeUniversal A/C Total Leak Stop Syringe by Supercool®. Keep your pride and joy running in tip-top shape with this top-grade automotive product. With it, you can easily and reliably check your vehicle for leaks to ensure its dependable and...Stops small leaks in evaporators, condensers, rubber hoses, gaskets and O-ringsContains U/V Dye for leak detection$20.53 - $27.59
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.