Semi Truck Diagnostic & Testing Tools
Browse by Vehicle
- 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
- OTC® - Replacement Cable KitUniversal Replacement Cable Kit by OTC®. Designed with maximum accuracy and precision in mind, this tool is the ultimate solution that will help make automotive diagnostic scanning fast and easy. It’s crafted using the finest...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$121.82 - $154.19Availability Varies - Depends on Product Options
- Autel® - MaxiSYS™ 1 Year Software Update Total Care Program CardUniversal MaxiSYS™ 1 Year Software Update Total Care Program Card by Autel®. 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...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$850.00 - $1,495.00In Stock - Ships in 24 to 48 hrs
- Autel® - MaxiSYS™ 1 Year Update and Warranty Total Care Program CardUniversal MaxiSYS™ 1 Year Update and Warranty Total Care Program Card by Autel®. 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...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$795.00 - $1,161.87Availability Varies - Depends on Product Options
- Autel® - MaxiVideo™ 5.5 mm Recording Waterproof Videoscope Inspection SystemMaxiVideo™ 5.5 mm Recording Waterproof Videoscope Inspection System by Autel®. 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...Imager Head and Cable Waterproof to 3 m (10')Records and plays back still images and video clips$139.95 - $187.62Availability Varies - Depends on Product Options
- Autel® - MaxiVideo™ 8.5 mm Recording Waterproof Videoscope Inspection SystemMaxiVideo™ 8.5 mm Recording Waterproof Videoscope Inspection System by Autel®. 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...On-screen horizontal/vertical reverseDigital zoom for increased viewing$221.25 - $355.00Availability Varies - Depends on Product Options
- 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$97.64Availability Varies - Depends on Product Options
- OTC® - Oil Pressure Sensor SocketUniversal Oil Pressure Sensor Socket 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...Manufactured for your oil system maintenanceBuilt to enhance your productivity$19.45 - $20.38Availability Varies - Depends on Product Options
- OTC® - Pressure GaugeUniversal Pressure Gauge 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 quality at...Designed to help to get your job done rightManufactured utilizing the highest quality materials$32.93 - $58.60Availability Varies - Depends on Product Options
- OTC® - Replacement BulbsUniversal Replacement Bulbs by OTC®. 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$13.37 - $668.44Availability Varies - Depends on Product Options
- Associated Equipment® - Automatic Battery and Electrical System TesterUniversal Automatic Battery and Electrical System Tester by Associated Equipment®. An automated battery testing unit that uses no dirty, maintenance-prone carbon piles. Just enter the discharge current, press the “start” button and...Easy-to-read LED voltmeter and ammeter500A safety clamps with “Flexi-Spring” and patented side terminal adapters$1,755.57 - $2,303.69Availability Varies - Depends on Product Options
- Associated Equipment® - Battery Load TesterUniversal Battery Load Tester by Associated Equipment®. 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 in USAOne Year Warranty$950.54 - $1,815.97Availability Varies - Depends on Product Options
- Associated Equipment® - Carbon Pile Battery Load TesterUniversal Carbon Pile Battery Load Tester by Associated Equipment®. 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$158.82 - $1,653.64Availability Varies - Depends on Product Options
- Associated Equipment® - Handheld Digital Battery, Alternator, Starter TesterUniversal Handheld Digital Battery, Alternator, Starter Tester by Associated Equipment®. 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...Stores last test series with or without powerBattery test displays:$209.61 - $420.16Availability Varies - Depends on Product Options
- Auto Meter® - AutoGage™ Digital Battery TesterUniversal AutoGage™ Digital Battery Tester by Auto Meter®. 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...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$466.95 - $777.95Availability Varies - Depends on Product Options
- Auto Meter® - Intelli-Check II™ Electrical System TesterUniversal Intelli-Check II™ Electrical System Tester by Auto Meter®. Professional grade, fully automatic electrical system tester specifically designed for diagnosing heavy-duty batteries and Electrical System. The BCT-200J utilizes...Designed for and used exclusively by heavy-duty truck and off-road equipment techniciansTests flooded and AGM batteries and starting/charging circuits$1,516.15In Stock - Ships within 24 hrs
- Auto Meter® - Variable Electrical System and Battery Load TesterUniversal Variable Electrical System and Battery Load Tester by Auto Meter®. 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$579.95 - $2,757.95Availability Varies - Depends on Product Options
- Baldwin Filters® - FleetStrip™ Coolant Test Strip KitUniversal FleetStrip™ Coolant Test Strip Kit by Baldwin Filters®. Liquid supplemental coolant additives can be used instead of coolant filters to replenish the cooling system when depleted. Periodic testing of coolant mixtures should...Provides an easy and affordable way of testing your engine’s cooling systemDesigned to assist in checking your antifreeze/coolant to maintain it at the proper concentration$2.36 - $9.55In Stock - Ships within 24 hrs
- CTA® - High Pressure Rail Adapter SocketHigh Pressure Rail Adapter Socket by CTA®. When it comes to quality, CTA knows no compromises. All the products made by this stringent quality control conditions. The latest manufacturing methods coupled with the use of the...Removes & installs the Fuel Injector Adapter from the High Pressure Rail to service O-ringsSpecialty tools to get your job done in a safer and easier fashion$14.27In Stock - Ships in 24 to 48 hrs
- Central Tools® - STORM™ Digital Drum GaugeUniversal STORM™ Digital 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$184.79 - $274.32Availability Varies - Depends on Product Options
- Central Tools® - Standard Test GageUniversal Standard Test 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 deliver...Designed to help to get your job done rightManufactured utilizing the highest quality materials$27.65 - $40.15In Stock - Ships in 24 to 48 hrs
- Central Tools® - Tire And Wheel Runout Gage with Locking PliersUniversal Tire And Wheel Runout Gage with Locking Pliers 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$387.64 - $388.72Availability Varies - Depends on Product Options
- Electronic Specialties® - Digital Electrical System and Battery TesterUniversal Digital Electrical System and Battery Tester by Electronic Specialties®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system...Accurate Battery & Electrical System TesterFeatures programmed test for new Start/Stop Batteries$224.00In Stock - Ships in 24 to 48 hrs
- Electronic Specialties® - Fuse Buddy™ ATC Fuse TesterUniversal Fuse Buddy™ ATC Fuse Tester by Electronic Specialties®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance...Designed for your maintenance needsMade from high-grade material for a long lifespan$18.64 - $23.98Availability Varies - Depends on Product Options
- Electronic Specialties® - Fuse Buddy™ Current LoopUniversal Fuse Buddy™ Current Loop by Electronic Specialties®. Just clamp your current probe over the loop to access the amperage draw through a fused circuit. Easy testing access, plugs right into fuse socket, no more hand made...Designed to help to get your job done rightManufactured utilizing the highest quality materials$13.55In Stock - Ships in 24 to 48 hrs
- Equus® - INNOVA™ Timing LightUniversal INNOVA™ Timing Light by Equus®. 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...One-hand OperationDesigned to help to get your job done right$91.92 - $137.41In Stock - Ships in 24 to 48 hrs
- FJC® - A/C Fluorescent Leak Detection DyeUniversal A/C Fluorescent Leak Detection Dye by FJC®. 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$2.26 - $44.91Availability Varies - Depends on Product Options
- FJC® - Battery TesterUniversal Battery Tester by FJC®. The Power Division of FJC is an industry-leading manufacturer and distributor of power electronic products and systems for mobile markets including battery testers, chargers, maintainers, power...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$36.28 - $363.70Availability Varies - Depends on Product Options
- FJC® - Carbon Pile Battery Load TesterUniversal Carbon Pile Battery Load Tester by FJC®. The Power Division of FJC is an industry-leading manufacturer and distributor of power electronic products and systems for mobile markets including battery testers, chargers,...Separate Volt and A metersDesigned to help to get your job done right$132.28 - $398.54In Stock - Ships in 24 to 48 hrs
- FJC® - Radiator Coolant DyeUniversal Radiator Coolant Dye by FJC®. Radiator Coolant Dyes by FJC are for use with Ultraviolet leak detection kits to aid in finding coolant leaks. These dyes are made of high-quality materials with customers in mind.Pinpoint leaks in cooling systems, including radiators, hoses, fittings, water pumps and head gasketsUse 1 oz per 4 gallons coolant$5.11 - $5.55In Stock - Ships within 24 hrs
- FJC® - Universal DyeUniversal Universal Dye by FJC®. Universal dye specially formulated to pinpoint car oil leaks, transmission leaks, fuel leaks, and power steering fluid leaks. Keep your pride and joy running in tip-top shape with this top-grade...Can be detected using any UV or Blue LightPOE Ester based$4.27 - $29.34Availability Varies - Depends on Product Options
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.