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
- Standard®Handypack™ 12 V LED Electrical System and Battery Tester (HP6340)Universal Handypack™ 12 V LED Electrical System and Battery Tester by Standard®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$11.65
- Standard®Handypack™ 25 A Battery Test Clips (HP2990)Universal Handypack™ 25 A Battery Test Clips (HP2990) 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...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$2.45
- Standard®Handypack™ 5 A Battery Test Clips with Vinyl Insulators (HP2960)Universal Handypack™ 5 A Battery Test Clips with Vinyl Insulators (HP2960) by Standard®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$2.45
- Standard®Handypack™ 6 Pieces 5 A Battery Test Clips (HP2970)Universal Handypack™ 6 Pieces 5 A Battery Test Clips (HP2970) by Standard®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$2.45
- Standard®Handypack™ 75 A Battery Test Clips (HP3200)Universal Handypack™ 75 A Battery Test Clips (HP3200) 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...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$4.07
- Standard®Training Diagnostic Software (STD100)Universal Training Diagnostic Software by Standard®. 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...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$299.00
- Stant®Orange Fuel Cap Testing Adapter (12419)Orange Fuel Cap Testing Adapter (12419) 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$28.92
- Stant®Red Fuel Cap Testing Calibration Cap (12412)Universal Red Fuel Cap Testing Calibration Cap (12412) 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...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$69.69
- Steelman®Replacement Camera Body for 78825, 79036, 79037, 79038 Heads (78824)Replacement Camera Body for 78825, 79036, 79037, 79038 Heads by Steelman®. The STEELMAN PRO 78824 Replacement Body Unit can be used to replace a damaged main body unit for the 78823 Wi-Fi Video Scope. This portable, hand-held,...Replacement body unit for steelman pro 78823 wi-fi video scopeSelf-generated wi-fi - video scope generates and broadcasts on its own wi-fi signal that can be viewed on or recorded to your smart device$130.05
- Sunex®3/8" Drive Oil Pressure Switch Socket (10007)3/8" Drive Oil Pressure Switch Socket by Sunex®. 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....Forged from Chrome-Vanadium alloy steelDeveloped using innovations to effectively serve the automotive aftermarket$19.82
- Supercool®1 oz. Green UV Leak Detection Dye Concentrate (9497)Universal 1 oz. Green UV Leak Detection Dye Concentrate (9497) 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...Effective in R-134a and R-12 refrigeration systemsDetectable when exposed to Ultraviolet light$8.14
- Supercool®1 oz. R-134a Total Leak Stop with U/V Dye & "HFC Free" Applicator (39241)Universal 1 oz. R-134a Total Leak Stop with U/V Dye & "HFC Free" Applicator by Supercool®. With U/V Dye & "HFC Free" Applicator. This product is made of high-quality materials to serve you for years to come. Designed using...Stops small leaks in evaporators, condensers, rubber hoses, gaskets and O-ringsContains U/V dye for leak detection$23.60
- Supercool®1 oz. R-134a Total Leak Stop with U/V Dye & "HFC Free" Applicator (39241B)Universal 1 oz. R-134a Total Leak Stop with U/V Dye & "HFC Free" Applicator (39241B) by Supercool®. With U/V Dye & "HFC Free" Applicator. Keep your pride and joy running in tip-top shape with this top-grade automotive product. With it,...Stops small leaks in evaporators, condensers, rubber hoses, gaskets and O-ringsDoes not contain polymers. Will not harm or clog A/C system components, reclamation or recovery machines$26.18
- Supercool®1 oz. Yellow SAE Certified UV Super Dye (33003)Universal 1 oz. Yellow SAE Certified UV Super Dye (33003) by Supercool®. Round Bottle. 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...SAE Certified for R134a and HFO-1234yf A/C SystemsSafe for hybrid and electric A/C systems$9.59
- Supercool®10 oz. Radiator Coolant UV Dye (16532)Universal 10 oz. Radiator Coolant UV Dye (16532) by Supercool®. Single Application. 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...Fluorescent Radiator Leak DetectionProfessional U/V leak detector dye$5.32
- Supercool®10 oz. Single Application Multi-Purpose Total UV Dye (16525)Universal 10 oz. Single Application Multi-Purpose Total UV Dye by Supercool®. U/V Total Dye is a hydrocarbon based product. Supercool recommends that after using U/V Total Dye to locate and repair the leak that the brake system be...Use with motor oil, hydraulic fluid, power steering fluid, brake fluid,diesel fuel, gasoline and transmission fluidsMix 1/4 ounce per quart of fluid$8.14
- Supercool®16 oz. Yellow SAE Certified UV Super Dye (24056)Universal 16 oz. Yellow SAE Certified UV Super Dye (24056) by Supercool®. Self-Measure Bottle. 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...SAE Certified for R134a and HFO-1234yf A/C SystemsSafe for hybrid and electric A/C systems$63.42
- Supercool®2 oz. A/C Total Leak Stop Syringe (37414)Universal 2 oz. A/C Total Leak Stop Syringe (37414) by Supercool®. Performance Enhancer without installation hose. Clamshell. Keep your pride and joy running in tip-top shape with this top-grade automotive product. With it, you can...Stops small leaks in evaporators, condensers, rubber hoses, gaskets and O-ringsContains U/V dye for leak detection$25.13
- Supercool®2 oz. HFC-Free Total Leak Stop (22878)Universal 2 oz. HFC-Free Total Leak Stop by Supercool®. With U/V Dye & "HFC Free" Applicator. Aerosol can with hose. For R134a systems. Keep your pride and joy running in tip-top shape with this top-grade automotive product. With it,...Stops small leaks in evaporators, condensers, rubber hoses, gaskets and O-ringsDoes not contain polymers. Will not harm or clog A/C system components, reclamation or recovery machines$28.97
- Supercool®2 oz. R134a, HFO-1234yf, R-12 Total Leak Stop with U/V Dye (ST22)Universal 2 oz. R134a, HFO-1234yf, R-12 Total Leak Stop with U/V Dye (ST22) by Supercool®. With U/V Dye. Bottle Installs easily using an oil injector. Keep your pride and joy running in tip-top shape with this top-grade automotive...Stops small leaks in evaporators, condensers, hoses, gaskets and sealsDoes not contain polymers. Will Not Harm or clog A/C system components, reclamation or recovery machines$30.13
- Supercool®32 oz. Green UV Leak Detection Dye Concentrate with Squeeze Tip Bottle (D32)Universal 32 oz. Green UV Leak Detection Dye Concentrate with Squeeze Tip Bottle (D32) 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...Effective in R-134a and R-12 refrigeration systemsDetectable when exposed to Ultraviolet light$92.58
- Supercool®32 oz. R-134a PAG Oil and UV Dye (27897)Universal 32 oz. R-134a PAG Oil and UV Dye (27897) by Supercool®. With U/V Dye. 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...Advanced high performance synthetic PAGProvides excellent resistance to moisture$29.08
- Supercool®4 LEDs UV Leak Detection Lamp (14312)Universal 4 LEDs UV Leak Detection Lamp 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...Breakthrough lens technology focuses U/V beams for increased brightness, intensity and contrastHandy 4.5" x 1.75" (11.43cm x 4.44cm) size$49.00
- Supercool®4 oz. Green UV Leak Detection Dye Concentrate (D4)Universal 4 oz. Green UV Leak Detection Dye Concentrate (D4) 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...Effective in R134a & R12 refrigeration systemsDetectable when exposed to U/V light$17.39
- Supercool®4 oz. R-134a Seal Leak Stop (STOPA)Universal 4 oz. R-134a Seal Leak Stop by Supercool®. With U/V Dye. Rubber Only Components. 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...Stops small leaks in evaporators, condensers, hoses, gaskets and sealsDoes not contain polymers. Will Not Harm or clog A/C system$11.43
- Supercool®4 oz. R-134a Total A/C Leak Stop (ST27)Universal 4 oz. R-134a Total A/C Leak Stop by Supercool®. With U/V Dye. Aerosol Can. 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...Stops small leaks in evaporators, condensers, hoses, gaskets and sealsDoes not contain polymers. Will Not Harm or clog A/C system components, reclamation or recovery machines$32.26
- Supercool®7 LEDs UV Leak Detection Lamp (14314)Universal 7 LEDs UV Leak Detection Lamp 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...Breakthrough lens technology focuses UV beams for increased brightness, intensity and contrastCordless and rechargeable 120 V. charger$77.03
- Supercool®8 oz. Green UV Leak Detection Dye Concentrate with Self Measure Bottle (D8)Universal 8 oz. Green UV Leak Detection Dye Concentrate with Self Measure Bottle (D8) by Supercool®. With Self Measure Bottle. Keep your pride and joy running in tip-top shape with this top-grade automotive product. With it, you can...Effective in R-134a and R-12 refrigeration systemsDetectable when exposed to Ultraviolet light$28.08
- Supercool®8 oz. Green UV Leak Detection Dye Concentrate with Squeeze Tip Bottle (7400)Universal 8 oz. Green UV Leak Detection Dye Concentrate with Squeeze Tip Bottle (7400) by Supercool®. With Squeeze Tip Bottle. Keep your pride and joy running in tip-top shape with this top-grade automotive product. With it, you can...Effective in R-134a and R-12 refrigeration systemsDetectable when exposed to Ultraviolet light$30.93
- Supercool®8 oz. Multi-Purpose Total UV Dye (TD8)Universal 8 oz. Multi-Purpose Total UV Dye by Supercool®. Self-Measure Bottle. 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...Use with motor oil, hydraulic fluid, power steering fluid, brake fluid,diesel fuel, gasoline and transmission fluidsMix 1/4 ounce per quart of fluid$30.70
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.