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
- Milton®6 V/24 V Circuit Tester (S1235)Universal 6 V/24 V Circuit Tester (S1235) by Milton®. 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...Designed for your maintenance needsMade from high-grade material for a long lifespan$14.37
- Milton®Analog Compression Tester Replacement Nose Cone for use with Milton S-1253 (1253-1)Universal Analog Compression Tester Replacement Nose Cone for use with Milton S-1253 by Milton®. This is a rubber nose cone piece used with the Milton compression tester #S-1253. To use simply insert inside the spark plug hole to...Replacement part for Handheld Compression Tester #S-1253Replace nose cone upon signs of wear for the most accurate compression reading possible$14.75
- Milton®Analog Deluxe Compression Tester Replacement Valve Core for use with Milton S-1251 and S-1253 (1251-2)Universal Analog Deluxe Compression Tester Replacement Valve Core for use with Milton S-1251 and S-1253 by Milton®. This is a special valve core replacement piece is used to measure engine cylinder compression when combined with the...Not for use with standard valve coreDesigned to help to get your job done right$2.65
- Milton®Cylinder Leak Down Tester (S-1257)Universal Cylinder Leak Down Tester by Milton®. 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...Cylinder leakage testing in the method professional mechanic's have used for years to more accurately pinpoint the causes of low compressionEasy to use, and works with shop air quickly spotting bad valves, worn rings, cracked cylinder walls and blown gaskets$98.00
- Milwaukee®M-SPECTOR 360™ 9 mm x 108" Videoscope Inspection System (2314-21)M-SPECTOR 360™ 9 mm x 108" Videoscope Inspection System by Milwaukee®. The Milwaukee 2314-21 M-SPECTOR 360™ Rotating Inspection Scope features a ground-breaking rotating display enabling the user to orient the image without having...Screen rotates providing the user fluid image controlCable has no rigid connection points from extensions and features a pipe guide for best in class pipe maneuverability$292.75
- Mityvac®0 to 10 psi Vacuum and Pressure Gauge with Fuel Pump Tester (MV5511)Universal 0 to 10 psi Vacuum and Pressure Gauge with Fuel Pump Tester by Mityvac®. Designed for performing pressure and vacuum tests on mechanical and electrical fuel pumps (up to 10 psi). This valuable instrument can also diagnose a...Large diameter gauge indicates both pressure and vacuumGauge face illustrates normal and abnormal operating ranges, and provides input for diagnosing common malfunctions$24.31
- Mityvac®0 to 1000 psi Analog Diesel Compression Tester (MV5534)Universal 0 to 1000 psi Analog Diesel Compression Tester (MV5534) by Mityvac®. The Mityvac MV5534 diesel compression tester features an accurate glycerin-filled gauge capable of testing cylinder compression up to 1,000 psi (6890 kPa)...Heavy-duty gauge is glycerin filled to dampen needle bouncePush-button pressure relief allows repeated tests without disconnecting the tester$104.09
- Mityvac®0 to 1000 psi Digital Diesel Compression Tester (MV5536)Universal 0 to 1000 psi Digital Diesel Compression Tester (MV5536) by Mityvac®. The Mityvac MV5536 electronic diesel compression tester memorizes the peak compression value for up to 12 cylinders. After testing, the values can be...Stores maximum compression value for up to 12 cylindersBacklit LC display is easy to read from any angle and in any light$171.25
- Mityvac®0 to 120 psi Fuel System Tester Kit (MV5546)Universal 0 to 120 psi Fuel System Tester Kit (MV5546) by Mityvac®. Tests fuel system pressure to diagnose common fuel system problems including failing fuel pump, faulty pressure regulator, blocked filter(s), or pinched fuel line(s).Contains 37 adapters for pressure testing most US, Asian, and European manufactured vehiclesHigh quality, heavy duty gauge with 0 to 120 psi (0 to 8 bar) scale, protective rubber boot, and push-button pressure relief valve$603.25
- Mityvac®0 to 300 psi Analog Compression Test Set (MV5520)Universal 0 to 300 psi Analog Compression Test Set by Mityvac®. Designed for dry and wet automotive cylinder compression testing, to detect ring or cylinder head problems, sticking valves, blown head gasket(s), and more. Pressure gauge...Manual pressure release for maintaining peak readingsLarge easy-to-read gauge face with multi-colored scales$34.47
- Mityvac®0 to 300 psi Analog Gasoline Compression Tester (MV5525)0 to 300 psi Analog Gasoline Compression Tester by Mityvac®. This quick-test style tester does not require threading into the spark plug hole, making it an ideal, economic solution for quickly diagnosing engine compression problems such...Large easy-to-read pressure gaugeUniversal rubber adapter fits virtually any size spark plug hole$20.42
- Mityvac®1/2" Spring Lock Adapter (MVA525)1/2" Spring Lock Adapter (MVA525) by Mityvac®. Together, they fit most US, Asian, and European manufactured vehicles. Each can be ordered separately using the part number indicated below. This product is designed and manufactured to...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$36.45
- Mityvac®14 mm to 16 mm Gasoline Compression Test Adapter for MV5530 Compression Test Kit (MVA5507)14 mm to 16 mm Gasoline Compression Test Adapter for MV5530 Compression Test Kit (MVA5507) by Mityvac®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Designed to help to get your job done rightManufactured utilizing the highest quality materials$16.61
- Mityvac®3/8" Spring Lock Adapter (MVA524)3/8" Spring Lock Adapter (MVA524) by Mityvac®. Together, they fit most US, Asian, and European manufactured vehicles. Each can be ordered separately using the part number indicated below. This product is designed and manufactured to...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$36.45
- Mityvac®90° Right Angle Quick-Change Diesel Compression Test Adapter for MV5535 Digital Diesel Compression Test Kit (MVA5607)Universal 90° Right Angle Quick-Change Diesel Compression Test 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$18.19
- Mityvac®Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5621)Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5621) 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$122.79
- Mityvac®Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5623)Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5623) 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$116.23
- Mityvac®Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5618)Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5618) 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$31.81
- Mityvac®Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5624)Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5624) 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$63.33
- Mityvac®Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5617)Injector Diesel Adapter for Diesel Compression Tester MV5534/MV5536/MV5535 (MVA5617) 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$43.71
- Mityvac®Injector Diesel Compression Test Adapter for MV5535 Digital Diesel Compression Test Kit (MVA5602)Injector Diesel Compression Test 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$41.83
- Mityvac®M10 x 1 Diesel Adapter for MV5534 Diesel Compression Test Kit (MVA5604)M10 x 1 Diesel Adapter for MV5534 Diesel Compression Test Kit by Mityvac®. 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$15.71
- Mityvac®Pressure Test Accessory Kit (MVA5552)Pressure Test Accessory Kit by Mityvac®. 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$108.95
- Moroso®Cylinder Leak Down Tester (89603)Universal 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 vehicle run...Top of the line components are used in this precision instrumentCalibrated for high accuracy and repeatability$675.99
- Moroso®OHC Cylinder Leak Down Tester Adapter (89602)Universal OHC Cylinder Leak Down Tester Adapter 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$53.99
- Moroso®Spark Plug Hole Air Hose Set (62385)Universal Spark Plug Hole Air Hose Set 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 vehicle...Air hose kit makes it easy to pressurize the cylinder to hold the valve closed when changing a valve springFits all 14mm and 18mm spark plug holes$50.99
- MotorVac®Cool Smoke™ HP Evap Leak Detection System (500-0150NA)Universal Cool Smoke™ HP Evap Leak Detection System by MotorVac®. The Cool Smoke® HP (High Pressure 3-60 psi) is the next generation of diagnostic leak detection for forced induction gasoline and diesel engines. The Cool Smoke® HP...Delivers dense smoke across its entire operating range of 3-60 psiDoes Not reduce smoke output at higher pressures$3,125.82
- MotorVac®Cool Smoke™ HP High Pressure Smoke Machine with Turbo Adapter Kit (500-0150)Universal Cool Smoke™ HP High Pressure Smoke Machine with Turbo Adapter Kit by MotorVac®. The Cool Smoke HP is the best High Pressure Smoke Machine for turbo gasoline and diesel leak detection. Delivers densest smoke vapor across the...Control CoolSmoke® HP with your Android® or Apple® mobile deviceDelivers dense smoke across its entire operating range of 3-60 psi unlike competitive products that must reduce smoke output at higher pressures due to limitations in their technologies$2,743.74
- MotorVac®Cool Smoke™ HP Leak Detection System (200-0150)Universal Cool Smoke™ HP Leak Detection System by MotorVac®. The Cool Smoke® HP is the next generation of diagnostic leak detection for forced induction gasoline and diesel engines. The Cool Smoke® HP delivers market-leading ease of...The Cool Smoke® HP delivers dense smoke across its entire operating range of 3-60 psi unlike competitive products that must reduce smoke output at higher pressures due to limitations in their technologies.Cool Smoke® HP’s advanced 3.5 inch multicolour digital LCD display, integrated software and Bluetooth® capability makes it easier and simpler to use. The system’s software is application compatible and in the future can be controlled and updated from a mobile device.$563.72
- MotorVac®Flexible Bladder Plug with Through Hole (WVA-096)Universal Flexible Bladder Plug with Through Hole by MotorVac®. 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...PROFESSIONAL LEAK DETECTION: The new Flexible Inflatable Bladder With Through Hole (WVA-096) allows intake and exhaust leak testing in tight spaces where a rigid bladder cant be maneuveredFLEXIBILITY: The patent-pending bladder is made of a pliable, fuel and chemical-resistant substrate that can bend up to 90$158.18
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.