Semi Truck Diagnostic & Testing Tools
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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®Charged Air Cooler Tester Kit (ZTSE4341)Universal Charged Air Cooler Tester Kit 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...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$390.95
- OTC®Code Reader (3874TPR-2YR)Universal Code Reader 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 materials and...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$5,920.13
- OTC®Contact/Non-Contact Phototach (3665)Universal Contact/Non-Contact Phototach by OTC®. No. 3665 phototach can be used as a contact as well as a non-contact tachometer. Four styles of contact adapter tips clip easily to the top of the phototach. Infrared technology makes the...Designed to help to get your job done rightManufactured utilizing the highest quality materials$212.83
- OTC®Coupler Socket (7342)Universal Coupler Socket 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$36.19
- OTC®DB-25 to 8-Pin Din Cable (3305-72)Universal DB-25 to 8-Pin Din Cable 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$73.55
- OTC®DDEC V Software (3101-77)DDEC V Software (3101-77) 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 materials and...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$989.51
- OTC®Decarbonizing Adapter (7666)Universal Decarbonizing Adapter 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$49.88
- OTC®Diesel Compression Adapter for Compression Tester Kit 5020 (217791)Diesel Compression Adapter for Compression Tester Kit 5020 (217791) by OTC®. Easy-to-use compression tester is designed specifically for medium-duty diesel engines equipped with glow plugs. Dual reading gauge measures compression to...Designed to help to get your job done rightManufactured utilizing the highest quality materials$221.35
- OTC®Diesel Nozzle Tester Adapter Set (4201)Diesel Nozzle Tester Adapter Set 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...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$856.34
- OTC®Digital Compression Gauge Head And Boot (5606-DGH)Universal Digital Compression Gauge Head And Boot by OTC®. The OTC 5606-DGH digital compression gauge head can replace analog gauges to provide advanced features, including measure, record and playback of compression readings on up to...Measure, record, and playback compression readings on 1 to 12 cylindersThe 2-1/2" gauge features a backlit LCD display and rugged protective rubber boot$81.67
- OTC®Digital Timing Light (FIX7529)Universal Digital Timing Light (FIX7529) by OTC®. Digital Timing Light features microprocessor-controlled circuitry and is loaded with advanced features including a bright LED display, mode indicator lights, and flashlight. The ideal...Conventional, electronic, computer controlled ignition systemsDIS and 2 cycle systems$95.96
- OTC®Dual End Wire Holder (5953)Universal Dual End Wire Holder 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...Holds wire and connectors solidly during soldering or other wire serviceUnique design allows connection to be held firmly on both sides with infinite adjustability$28.40
- OTC®Dual Size Schrader Removal Tool (CEA-049)Universal Dual Size Schrader Removal Tool by OTC®. Accessory for No. 6521, assorted cap plug kit. 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...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$38.91
- OTC®ESI Off-Highway 1-Year Software License Renewal (3824-08OHW)Universal ESI Off-Highway 1-Year Software License Renewal by OTC®. The 3824-08OHW software license allows the 3824 and 3824BSC Bosch ESI[truck] scan tools, in conjunction with the 3824CBL-UPG, to scan and diagnose a wide variety of...Extensive coverage for popular North American construction vehicles, agricultural equipment, stationary engines, street sweepers, and moreAdvanced diagnostics and bi-directional controls for off-highway vehicles$1,500.00
- OTC®ESI Truck Heavy-Duty Diagnostic Solution with HDS 1000 Tablet (3824A)Universal ESI Truck Heavy-Duty Diagnostic Solution with HDS 1000 Tablet by OTC®. The Bosch ESI[truck] 3824A Heavy Duty Diagnostic Solution enables technicians to efficiently diagnose and repair a wide variety of heavy duty trucks and...Extensive make, model, engine, and system coverage - for North American commercial vehicles / heavy duty trucksEnhanced bidirectional controls, including diesel particulate filter (DPF) regeneration, cylinder cut-out, injector coding, component actuation, special tests, and more$10,500.00
- OTC®ESI Truck Trailer Adapter (3824-06)Universal ESI Truck Trailer Adapter by OTC®. For ESI-HD Truck Multibrand Diagnostics (Part# 3824). For Bosch ESI Truck Models. Designed with maximum accuracy and precision in mind, this tool is the ultimate solution that will help make...J2497 Power Line Carrier (PLC) communication compatibleAllows direct connection to trailer$663.72
- OTC®ESI Truck USB Cable (3824-05)Universal ESI Truck USB Cable 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 materials...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$10.83
- OTC®Electronic DEF Refractometer (3095)Universal Electronic DEF Refractometer by OTC®. The OTC 3095 offers quick, easy, and accurate measurement of UREA concentration in DEF or AdBlue solution. Ensure the proper operation of class 7-8 trucks utilizing the SCR system with...Digital displayDisplays % UREA$669.83
- OTC®Equipment Translator Device Kit (J-47943-A)Universal Equipment Translator Device Kit by OTC®. For Allison. This kit is required when using Allison DOC and is required when diagnosing all Allison electronically controlled transmissions. This product is made of high-quality...High quality at an affordable priceExpertly made from premium materials$1,758.15
- OTC®Evolve Professional Diagnostic Tool (3896)Universal Evolve Professional Diagnostic Tool by OTC®. As modern vehicles become increasingly complex, OTC and Bosch diagnostics continue to evolve — from best-in-class vehicle coverage to continuously improving speed, performance and...The ruggedized tablet features an industry-leading 10.4 inch optically bonded screen providing unmatched visibility in most conditions, including direct sunlightDual wifi architecture includes separate handset-VCI wifi and additional shop internet connection allowing the technician to move freely around the vehicle$3,991.00
- OTC®Expert-level Code Reader (3824BSC)Universal Expert-level Code Reader by OTC®. Unmatched Coverage and Repair Information at the Truck: The most complete diagnostic coverage for multibrand heavy-duty trucks and engines, performing special tests and parameter reset...Code to fix at the truck - trouble shooting information integrated right on the toolTech stays at the vehicle$8,200.00
- OTC®GM MDI 2 Global Diagnostic Interface Tool Kit (EL-52100-AM)Universal GM MDI 2 Global Diagnostic Interface Tool Kit by OTC®. The GM MDI 2 is the next generation Global Diagnostic Interface tool for both current and future vehicles, and extending through future vehicle protocols and...Wireless connection - simple plug and play configuration Upgraded support includes 802 11bgnHigh Speed USB 2 0 Connection with improved protection and faster performance$1,302.80
- OTC®Gauge and Component Tester (3385)Gauge and Component Tester by OTC®. This is the fast way to pinpoint problems in fuel, oil, temperature, and vacuum electrical gauges. This tester includes a test light and switch to also test instrument voltage regulators on Ford...Designed for your maintenance needsMade from high-grade material for a long lifespan$341.91
- OTC®Genisys EVO™ 2015 Software Loyalty Kit (3421-153)Universal Genisys EVO™ 2015 Software Loyalty 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...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$748.69
- OTC®Genisys EVO™ 2015 Software Super Bundle Kit (3421-152)Universal Genisys EVO™ 2015 Software Super Bundle 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...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$634.56
- OTC®Genisys EVO™ 4GB Software System 5.0 Memory Card (3421-154)Universal Genisys EVO™ 4GB Software System 5.0 Memory Card 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...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$448.07
- OTC®Genisys Touch Screen Protector Pack (3895-05)Universal Genisys Touch Screen Protector Pack 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...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$403.57
- OTC®Genisys™ 2013 Loyalty Software Kit (3421-147)Universal Genisys™ 2013 Loyalty Software Kit by OTC®. This powerful kit recognizes loyal Genisys™ customers that have System 4.0 or newer software. This kit includes most vehicle coverage ever released at a value price — USA 2013...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$752.25
- OTC®Genisys™ 9-Pin Heavy Duty Deutsch Adapter (3421-81)Universal Genisys™ 9-Pin Heavy Duty Deutsch Adapter 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...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$322.93
- OTC®Green 9-Pin Heavy-Duty High Speed Adapter Cable (3824-10)Universal Green 9-Pin Heavy-Duty High Speed Adapter Cable by OTC®. 9-Pin diagnostic connector cable for ESI[truck] scan tool. Works with new high speed diagnostics communication and is backward compatible with older black 9-pin vehicle...9-pin heavy-duty diagnostic connectorHigh-speed diagnostics communication$151.54
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.