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
- Performance Tool®Leakdown Test Kit (W89729)Universal Leakdown Test Kit by Performance Tool®. 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...Quickly diagnoses internal engine problems like bad rings, valves and leaking head gasketsLeak-down tests are more accurate than standard compression tests for engine diagnostics$48.47
- Interdynamics®A/CPRO™ 8 oz. R-134a PAG Medium Viscosity 100 Refrigerant Oil with UV Dye (P100UV)Universal A/CPRO™ 8 oz. R-134a PAG Medium Viscosity 100 Refrigerant Oil with UV Dye 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...Medium Viscosity Oil For R-134a Systems ISO 100 medium viscosityMeets OEM specifications PAG Oil with UV DYE detects leaks with any leak detection system$12.88
- Interdynamics®AutoPRO™ 1 oz. A/C System UV Fluorescent Leak Detector Dye (376CS)Universal AutoPRO™ 1 oz. A/C System UV Fluorescent Leak Detector Dye 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...Enough For 4 ApplicationsNot For Use In Hybrid/Electric Vehicles With Non-Belt Driven (Electric Driven) Compressor$11.38
- Interdynamics®AutoPRO™ 1 oz. Oil/Fuel Systems UV Fluorescent Leak Detector Dye (374CS)Universal AutoPRO™ 1 oz. Oil/Fuel Systems UV Fluorescent Leak Detector Dye (374CS) by Interdynamics®. Certified A/C Pro Oil And Fuel Systems UV Dye is for use in engine oil, transmissions, power steering systems, and gas or diesel...Oil and Fuel System UV DyeOne application of oil & fuel system UV leak detection dye$10.94
- Interdynamics®UV Leak Detection Light Kit with Glasses (438)Universal UV Leak Detection Light Kit with Glasses 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...High-intensity true Ultraviolet leak detection pen light and AAA batteriesWorks with all types of UV leak detection dye$16.11
- OTC®0.125 oz. UV Leak Detection Kit (16235)Universal 0.125 oz. UV Leak Detection Kit by OTC®. 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...Meets the new SAE J2297 standard for use with both R134a and R1234YFThe easiest and most accurate gun available today$220.69
- OTC®100 psi Preset Nitrogen Pressure Regulator (6525-1)Universal 100 psi Preset Nitrogen Pressure Regulator by OTC®. For use with No. 6521 or No. 6525. 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$186.35
- OTC®16 oz. Smoke Compound (P0716)Universal 16 oz. Smoke Compound by OTC®. 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...UltraTraceUV dye solution is the only solution approved by GM, Ford, and ChryslerIt will not harm the activated charcoal canister, ORVR valve, purge valve, vent valve, catalytic converters, O2 sensors, seals, or gaskets$93.98
- OTC®8 oz. A/C Fluorescent Dye (16240)Universal 8 oz. A/C Fluorescent Dye by OTC®. 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, this product by OTC® will last a...8 oz. bottle, 64 applicationsBrightest dyes in the industry to help find leaks faster$78.54
- OTC®Assorted Cap Plug Kit (CEA-02)Universal Assorted Cap Plug Kit 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 vehicle for...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$46.26
- OTC®Charged Air Cooler Tester (5039)Universal Charged Air Cooler Tester 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 relief...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$409.35
- OTC®Economy Refrigerant Leak Detector (LD3)Universal Economy Refrigerant Leak Detector by OTC®. The Robinair LD3 Economy Refrigerant Leak Detector is an entry-level leak detector that is compatible with most commonly used refrigerants today including R-1234yf and R-134a. The...Long life, stable sensorAutomatic calibration and reset to ambient$302.31
- OTC®Robinair™ LD7 Premium Refrigerant Leak Detector (LD7)Universal Robinair™ LD7 Premium Refrigerant Leak Detector by OTC®. The Robinair LD7 Premium Refrigerant Leak Detector features a new color graphic display that highlights leak sizes in two unique ways. Bar graph mode shows the amount...Patented 3 LED UV lights with 395-415 nmWavelength is optimum for a/c dye fluorescence$447.88
- OTC®Select Refrigerant Leak Detector (LD5)Universal Select Refrigerant Leak Detector by OTC®. The Robinair LD5 Select Refrigerant Leak Detector features a new color graphic display that helps locate leaks using a unique bar graph mode to show the amount of refrigerant...Unique color graphic LCD displayLong life, stable sensor$404.76
- OTC®Standard Service Port Adapter (CEA-04)Universal Standard Service Port Adapter by OTC®. Accessory for No. 6521, standard service port adapter. Keep your pride and joy running in tip-top shape with this top-grade automotive product. With it, you can easily and reliably check...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$77.19
- 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. 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
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.