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
- Supercool®Green UV Leak Detection Dye ConcentrateUniversal Green UV Leak Detection Dye Concentrate 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...Compatible with PAG, ester, and mineral oilsDoes not contain solvents$8.14 - $92.58
- Supercool®PAG Oil and UV DyeUniversal PAG Oil and UV Dye 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 to ensure its...Advanced high performance synthetic PAGProvides excellent resistance to moisture$9.07 - $29.08
- Supercool®Radiator Coolant UV DyeUniversal Radiator Coolant UV Dye 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...Fluorescent Radiator Leak DetectionProfessional U/V leak detector dye$5.32 - $17.70
- Supercool®Total Leak StopUniversal Total Leak Stop 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 worry-free...Designed to help to get your job done rightManufactured utilizing the highest quality materials$26.18 - $30.83
- Supercool®Yellow SAE Certified UV Super DyeUniversal Yellow SAE Certified UV Super Dye 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...SAE Certified for R134a and HFO-1234yf A/C SystemsSafe for hybrid and electric A/C systems$9.59 - $50.98
- Torque Solution®Boost Leak Tester AdapterUniversal Boost Leak Tester Adapter by Torque Solution®. The Torque Solution Boost Leak Tester is machined from billet aluminum and black anodized to look good in any ones tool box. Don't skimp on quality, which is why include high...CNC Machined 6061-T6 Billet AluminumBlack Anodized w/ Torque Solution Logo$59.25 - $64.11
- Tracer Products®EZ-Ject™ A/C DyeUniversal EZ-Ject™ A/C Dye by Tracer Products®. 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...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$77.61 - $91.68
- Tracer Products®Fluoro-Lite™ R134a A/C System Leak Detection DyeUniversal Fluoro-Lite™ R134a A/C System Leak Detection Dye by Tracer Products®. 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...OEM ApprovedCo-solvent free and certified to meet SAE J2297$47.78 - $59.03
- Tracer Products®Solo-Shot™ Single-Use Syringe Leak Detection KitUniversal Solo-Shot™ Single-Use Syringe Leak Detection Kit by Tracer Products®. The LeakFinder® SOLO-SHOT™ disposable syringes are designed for quick and easy injections. Each syringe is prefilled with the correct amount of dye for...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$47.79 - $92.67
- UView®A/C ExtenDyeUniversal A/C ExtenDye by UView®. 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$3.65 - $55.22
- UView®Spotgun™ UV Phazer™ Rechargeable Leak Detection KitUniversal Spotgun™ UV Phazer™ Rechargeable Leak Detection Kit by UView®. The new UV Phazer BLACK brings extreme performance and outstanding value to the leak detection kits. Keep your pride and joy running in tip-top shape with this...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$171.87
- Interdynamics®EzChill™ RefrigerantUniversal EzChill™ Refrigerant by Interdynamics®. 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$15.90 - $20.09
- Lang Tools®Replacement Pressure GaugeUniversal Replacement Pressure Gauge by Lang Tools®. 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$14.88 - $82.73
- Mastercool®Dual EVAP/High Pressure Diagnostic Smoke MachineUniversal Dual EVAP/High Pressure Diagnostic Smoke Machine by Mastercool®. This unit is for evap, turbo/intake and heavy duty truck testing providing a solution to difficult to diagnose automotive leaks. Mobile repairs are now possible...Compact, heavy duty design for years of reliable serviceMultiple options for smoke injection include built-in internal compressor, shop air and inert gases$1,358.31 - $1,715.31
- MotoRad®Quick-On Fuel Cap Tester AdapterUniversal Quick-On Fuel Cap Tester Adapter by MotoRad®. 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,...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$13.43 - $29.62
- S&G Tool Aid®Replacement LensUniversal Replacement Lens 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$7.92 - $8.95
- S&G Tool Aid®Valve CoreUniversal Valve Core 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$1.82 - $3.71
- Tracer Products®OPTI-PRO™ UV MAX Leak Detection Light KitUniversal OPTI-PRO™ UV MAX Leak Detection Light Kit by Tracer Products®. 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...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$107.98 - $134.97
- Performance Tool®Brake Fluid Tester (W182)Universal Brake Fluid Tester (W182) by Performance Tool®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...Determines Moisture Level in Brake Fluid5 LED Readout Indicates Percentage of Moisture$31.34
- Performance Tool®Brake Fluid Tester (W181)Universal Brake Fluid Tester (W181) by Performance Tool®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...Determines Moisture Level in Brake Fluid5 LED Readout Indicates Percentage of Moisture$22.36
- Central Tools®STORM™ 0 to 1" Ip54 Long Range Indicator Set (3D107)Universal STORM™ 0 to 1" Ip54 Long Range Indicator Set 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$77.19
- Fowler High Precision®12" Drum and Rotor Measuring Kit with Xtra-Value Cal Electronic Caliper (74-101-777)Universal 12" Drum and Rotor Measuring Kit with Xtra-Value Cal Electronic Caliper (74-101-777) by Fowler High Precision®. Measures disc brakes and up to 12" on brake drums. When measuring brake drums only, add 8" to measurement allows...Range: 6"/150mmStainless steel frame$83.31
- Fowler High Precision®2 to 40" Inside Micrometer (52-243-240-1)Universal 2 to 40" Inside Micrometer by Fowler High Precision®. Fowler extension rod type Inside Micrometers have a wide measuring range - any one single micrometer can replace many bar type inside micrometers. This product is made of...Each set consists of an inside micrometer head and a series of fully hardened and lapped extension rods of different lengthsAnvil and spindle are hardened and precision ground with microlap finish on ends$750.76
- Fowler High Precision®4" to 18.7" EZ-Drum Electronic Brake Drum Gauge (74-150-050)Universal 4" to 18.7" EZ-Drum Electronic Brake Drum Gauge (74-150-050) by Fowler High Precision®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Dust, water and oil resistant to IP54 standardsRS232 output for direct computer connection$213.11
- Fowler High Precision®4" to 20" EZ-Drum Electronic Brake Drum Gauge (74-150-020)Universal 4" to 20" EZ-Drum Electronic Brake Drum Gauge (74-150-020) by Fowler High Precision®. 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...Protected to IP54 specificationsBeam has vernier scale to double check reading$182.27
- Fowler High Precision®Rotocal™ 0 to 3.25" Reach Electronic Rotor Gage (74-150-005)Universal Rotocal™ 0 to 3.25" Reach Electronic Rotor Gage by Fowler High Precision®. The ONLY brake rotor gage on the market that measures most rotors while the wheels are still mounted on the vehicle (in most applications). It also...Measures most rotors while the wheels are still mounted on the vehicleSolid 1 piece construction$95.97
- Fowler High Precision®Rotocal™ 0 to 5.5" Electronic Rotor Gauge with Twin Conical Anvils (74-150-004)Universal Rotocal™ 0 to 5.5" Electronic Rotor Gauge with Twin Conical Anvils (74-150-004) by Fowler High Precision®. Reads in inch, metric, and fractions. Direct inch/metric/fraction conversion. Water resistant to IP54 standards....Direct inch/metric/fraction conversionWater resistant to IP54 standards$75.61
- GearWrench®3" to 16" Digital Brake Drum Gauge (3777)Universal 3" to 16" Digital Brake Drum Gauge by GearWrench®. 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...Manual power on/offSAE/metric system interchange at any position$327.35
- GearWrench®6-1/2" to 14-1/4" Brake Resetting Gauge (3377)Universal 6-1/2" to 14-1/4" Brake Resetting Gauge by GearWrench®. 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...Used to set the proper clearance between brake lining and drum prior to assemblyInside calipers measure drum diameters and outside calipers transfer measurement to brake shoes$56.07
- GearWrench®Brake Lining Thickness Gauge (3962)Universal Brake Lining Thickness Gauge by GearWrench®. 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...Color coded brake gauge identifies thickness levels for brake lining inspectionAll steel construction$19.47
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.