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
- Mastercool®R-134a Refrigerant Visual Inspection Sight Glass (53376)Universal R-134a Refrigerant Visual Inspection Sight Glass (53376) 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...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$191.32
- Mastercool®Raptor Refrigerant Leak Detector (56100)Universal Raptor Refrigerant Leak Detector (56100) by Mastercool®. The Raptor Refrigerant Leak Detector offers state-of-the-art features and micro-processing technology while the design sensor delivers an accurate and instantaneous...Digital Signal Micro ProcessorVisual Leak Level Indicator$194.44
- Mastercool®Raptor Refrigerant Leak Detector with UV Blue Light (56200)Universal Raptor Refrigerant Leak Detector with UV Blue Light (56200) by Mastercool®. The Raptor Refrigerant Leak Detector with UV Blue Light offers state-of-the-art features and micro-processing technology while the design sensor...Digital Signal Micro ProcessorMute Function$253.26
- Mastercool®Rechargeable LED UV Light (53518-UV)Universal Rechargeable LED UV Light by Mastercool®. 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...AAA battery holder provides backup power to flashlight (3 AAA batteries included)Battery Life: 3 to 5 hours continuous leak detection$90.21
- Mastercool®Rechargeable UV Leak Locator Kit (53451-110)Universal Rechargeable UV Leak Locator Kit by Mastercool®. Leading the way in UV leak detection, Mastercool offers a variety of compact UV leak locator kits. Each kit offers a powerful inspection lamp, a “refillable” or “cartridge...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$167.97
- Mastercool®Replacement Sensor Tip (55100-SEN)Universal Replacement Sensor Tip by Mastercool®. 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...3 Levels Of Sensitivity (5 Levels Of Detection)Visual Leak Level Indicator$16.90
- Mastercool®Turbo/Intake Diagnostic Smoke Machine (43060-TURBO)Universal Turbo/Intake Diagnostic Smoke Machine by Mastercool®. For all turbo, intakes, exhaust, vacuum lines and vacuum components, manifolds, passenger compartment window and sunroof, headlight/tail-light fixtures and much more. This...Compact, heavy-duty design for years of reliable serviceMultiple options for smoke injection include built-in internal compressor, shop air and inert gases$818.52
- Midtronics®10' Replacement Cable for EXP-1000 and EXP-1000HD Battery Testers (A083)Universal 10' Replacement Cable for EXP-1000 and EXP-1000HD Battery Testers (A083) by Midtronics®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$91.55
- Milton®0 to 300 psi Analog Deluxe Compression Tester (S1251)Universal 0 to 300 psi Analog Deluxe Compression Tester by Milton®. Deluxe compression tester has a double fiber braided neoprene hydraulic hose. Includes 14 mm long reach adapter and spare valve core. Composite metric scale reads both...Includes an easy to read dial gageDesigned to help to get your job done right$52.44
- Milton®6 V/12 V Battery Tester (1260)Universal 6 V/12 V Battery Tester (1260) by Milton®. This battery, starter and charging system tester can test up to 120 amps at 10 volts. This tester has a black metal finish and includes storage on the side for cables. With its heavy...Tests 6 and 12 volt batteriesAnalog display is easy to read$52.11
- Mityvac®0 to 1000 psi Digital Diesel Compression Test Set (MV5535)0 to 1000 psi Digital Diesel Compression Test Set (MV5535) by Mityvac®. This comprehensive diesel engine compression test kit features an electronic tester that memorizes the peak compression value for each cylinder. When testing is...Stores maximum compression value for up to 12 cylindersBacklit LC display is easy to read from any angle and in any light$290.50
- Mityvac®0 to 200 psi Fuel System Tester Kit (MV5545)Universal 0 to 200 psi Fuel System Tester Kit (MV5545) by Mityvac®. The MV5545 Fuel System Tester diagnoses and pinpoints common fuel system failures including failing fuel pump, faulty pressure regulator, blocked filter(s), pinched...Measures fuel system pressure and flow to accurately pinpoint fuel system failuresSaves hours of troubleshooting time by diagnosing a bad fuel pump and other related drivability problems in seconds$826.36
- Mityvac®0 to 300 psi Analog Professional Compression Test Set (MV5530)Universal 0 to 300 psi Analog Professional Compression Test Set by Mityvac®. This comprehensive kit includes everything required to perform dry and wet engine cylinder compression tests commonly used to detect ring or cylinder head...Manual pressure release for maintaining peak readingsProfessional-grade threaded adapters for leak-proof seals$80.41
- Mityvac®0 to 300 psi Digital Petrol Compression Test Set (MV5532)Universal 0 to 300 psi Digital Petrol Compression Test Set by Mityvac®. This comprehensive gasoline engine compression test kit features an electronic tester that memorizes the peak compression value for each cylinder. When testing is...Stores maximum compression value for up to 12 cylindersBacklit LC display is easy to read from any angle and in any light$185.45
- Mityvac®12" x 14 mm Analog Petrol Compression Test Adapter for MV5530 Compression Test Kit (MVA5506)Universal 12" x 14 mm Analog Petrol Compression Test Adapter for MV5530 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$27.23
- Mityvac®Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5616)Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5616) 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$56.40
- Mityvac®Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5620)Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5620) 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$84.06
- Mityvac®M10 x 1 mm Glow Plug Analog Diesel Adapter for MV5535 Digital Diesel Compression Test Kit (MVA5605)M10 x 1 mm Glow Plug Analog Diesel Adapter for MV5535 Digital Diesel Compression Test Kit (MVA5605) by Mityvac®. Diesel engines utilize a fuel injector on each cylinder to inject fuel for combustion. Although they do not use spark plugs...Precision engineered to meet strict quality requirementsGuaranteed to offer exceptional reliability and enduring value$30.86
- Mityvac®M10 x 1.25 mm Glow Plug Diesel Adapter for MV5535 Digital Diesel Compression Test Kit (MVA5612)M10 x 1.25 mm Glow Plug Diesel 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 the...Precision engineered to meet strict quality requirementsGuaranteed to offer exceptional reliability and enduring value$15.50
- Mityvac®M14 x 1.25 mm Glow Plug Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5610)M14 x 1.25 mm Glow Plug Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5610) 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$38.22
- Moroso®Standard Cylinder Leak Down Tester (89600)Universal Standard Cylinder Leak Down Tester by Moroso®. With this quality part backed by a great price, you can enjoy your vehicle so much more than you thought was possible. This Moroso part is specifically engineered to make your...Quickly diagnoses failed or leaking valves, pistons, rings, and head gasketsLarge-diameter 3-1/2" gauge face indicates percentage of leakage rather than psi, eliminating the need for math calculations$194.99
- MotorVac®6.8 oz. Leak Detection Fluid with UV Dye for Cool Smoke EVAP Machine (400-1054)Universal 6.8 oz. Leak Detection Fluid with UV Dye for Cool Smoke EVAP Machine by MotorVac®. CoolSmoke Fluid with UV Dye pin-points leaks faster and more accurately than non-dye mehtos. Designed specifically for use with the MotorVac...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$48.25
- MotorVac®Cool Smoke™ EVAP Machine (500-0100)Universal Cool Smoke™ EVAP Machine by MotorVac®. The MotorVac® Cool Smoke machine features dual-mode leak detection: test for leaks with or without smoke at the push of a button. Pressure and vacuum leak diagnostics with instant...New safer, healthier technology. Uses no heat to create high visibility smokeUsing 0.5psi pressure control, Cool Smoke has the highest flow rate of any smoke machine$1,062.76
- NEXIQ®1 m 6 and 9-Pin "Y-Type" Deutsch Adapter (402048)1 m 6 and 9-Pin "Y-Type" Deutsch Adapter by NEXIQ®. 6- and 9-pin Deutsch "Y" adapter for use with the USB-Link™ and the WVL2™. Designed with maximum accuracy and precision in mind, this tool is the ultimate solution that will help...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$407.36
- NEXIQ®6 and 9-Pin Deutsch Cable (493148)6 and 9-Pin Deutsch Cable by NEXIQ®. 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$375.64
- NEXIQ®9-Pin CAT Adapter (493015)9-Pin CAT Adapter (493015) by NEXIQ®. 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$235.63
- NEXIQ®A Class 1-Type Bluetooth USB Adapter (405001)Universal A Class 1-Type Bluetooth USB Adapter by NEXIQ®. A class 1 type Bluetooth USB adapter that supports 300 meters of wireless transmission. Designed with maximum accuracy and precision in mind, this tool is the ultimate solution...Class 1 Bluetooth provides up to 100 feet of wireless freedomNo messy cables to untangle or get in the way with Bluetooth$142.77
- NEXIQ®Aftertreatment Service Kit (307000)Universal Aftertreatment Service Kit by NEXIQ®. The Aftertreatment Service Kit is used as part of a cleaning routine to remove particulates and soot that impede or obstruct the honeycomb filter within the front face of the Diesel...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$226.76
- NEXIQ®Latching USB Cable (404032)Universal Latching USB Cable by NEXIQ®. 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$61.29
- NEXIQ®Pro-Link iQ™ Caterpillar Electronic Engines Software (889024)Pro-Link iQ™ Caterpillar Electronic Engines Software (889024) by NEXIQ®. The Pro-Link iQ Caterpillar Electronic Engines software application provides reprogramming and diagnostic capability for CAT electronic systems. With the...Easy to usePortable$1,232.39
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.