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
- UView®Spotgun Jr™ 1 oz. Multi-Shot A/C ExtenDye, 1 oz. x 4 Cartridges (399020A)Universal Spotgun Jr™ 1 oz. Multi-Shot A/C ExtenDye, 1 oz. x 4 Cartridges by UView®. A/C ExtenDye contains an enhanced additive package that boosts performance and increases the longevity of the A/C system. The friction modifier...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$44.89
- UView®Spotgun™ R-1234yf Hose Assembly with Coupler (471540)Universal Spotgun™ R-1234yf Hose Assembly with Coupler by UView®. 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...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$59.48
- UView®Spotgun™ UV Phazer™ Rechargeable Leak Detection Kit with A/C ExtenDye™ (414565A)Universal Spotgun™ UV Phazer™ Rechargeable Leak Detection Kit with A/C ExtenDye™ (414565A) by UView®. The new UV Phazer BLACK brings extreme performance and outstanding value to the leak detection kits. Keep your pride and joy...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$171.87
- UView®UV Phazer Black™ Rechargeable UV Leak Detection Light (413065)Universal UV Phazer Black™ Rechargeable UV Leak Detection Light by UView®. High Power UV LED Fluoresces dye brighter than the competition. Lithium-Ion battery provides 2 hours of power. Adjustable focus and a rugged aluminum housing...Extreme PerformanceOutstanding Value$74.94
- UView®UV Phazer Black™ UV Leak Detection Light (413075)Universal UV Phazer Black™ UV Leak Detection Light by UView®. High Power UV LED Fluoresces dye brighter than the competition. Three included AAA batteries provide 3 hours of power. Adjustable focus and rugged aluminum housing make it...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$51.86
- UView®UV Phazer NEO™ Rechargeable UV Leak Detection Light (413025)Universal UV Phazer NEO™ Rechargeable UV Leak Detection Light by UView®. High Output UV LED True UV: Fluoresces dyes brighter than blue LED lights. Adjustable Lens Focus: Allows for focusing light intensity. Rechargeable Lithium Ion...High Output UV LEDTrue UV: Fluoresces dyes brighter than blue LED lights$138.23
- Equus®5-piece Oil Pressure Tester Adapter Kit (9848)Universal 5-piece Oil Pressure Tester Adapter Kit by Equus®. 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...Comes with sealing crush rings100% brass adapters$11.72
- Equus®European Oil Pressure Adapter Kit (9843)Universal European Oil Pressure Adapter Kit by Equus®. This four piece US Domestic and European engine oil pressure gauge adapter fitting kit from Equus includes 4 solid brass bushings to adapt from 1/8-27 NPTF female threads to male...Comes with sealing crush rings100% brass adapters$10.17
- Performance Tool®0 to 1000 psi Analog Diesel Compression Tester Kit (W89735)Universal 0 to 1000 psi Analog Diesel Compression Tester Kit (W89735) 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...Diesel compression Tester set includes all the necessary components to test diesel compression on most diesel trucks, cars and tractorsConstructed of durable carbon steel with a chrome plated gauge for accurate measurements in harsh environments$123.80
- Performance Tool®0 to 1000 psi Analog Diesel Compression Tester Kit (W89731)Universal 0 to 1000 psi Analog Diesel Compression Tester Kit (W89731) 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...Tests compression through both glow plug and injector holesOnly the best build quality$46.02
- Performance Tool®0 to 300 psi Analog Compression Tester (W80580)Universal 0 to 300 psi Analog Compression Tester by Performance Tool®. 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...Measure pressure in the combustion chamber as the piston comes up on a compression strokeHand held tester to take accurate compression readings quickly and easily$16.39
- Performance Tool®0 to 300 psi Analog Deluxe Compression Tester Kit (W80584)Universal 0 to 300 psi Analog Deluxe Compression Tester Kit 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...Deluxe compression tester for gas engines5 threaded adapters to cover most gas engines$33.50
- Performance Tool®0 to 300 psi Analog Flex Drive Compression Tester (W80579)Universal 0 to 300 psi Analog Flex Drive Compression Tester by Performance Tool®. 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$19.01
- Performance Tool®4-piece Compression Tester Spark Plug Adapters (W80577)Universal 4-piece Compression Tester Spark Plug Adapters 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...Snowmobiles, motorcycles, outboards, lawn equipment and much moreFits compression tester W80579 and others with a 14mm x 1.25 male thread$16.43
- OTC®0 to 300 psi Analog Petrol Compression Tester Set (5606)Universal 0 to 300 psi Analog Petrol Compression Tester Set by OTC®. Designed for complete compression testing on gasoline engines, including domestic, imports, motorcycles, marine, and small engines. Unique problem solving features for...2-1/2" gauge features chrome bezel and rugged protective outer bootCorrosion resistant nickel plated finish$93.12
- OTC®0 to 300 psi Digital Compression Tester Set (5606-DG)Universal 0 to 300 psi Digital Compression Tester Set by OTC®. Digital Compression Tester Kit helps determine the mechanical condition of the engines' cylinders. The digital gauge is easy to read and can display pressures in PSI, kPA,...Measure, record, and playback compression readings on 1 to 12 cylindersAdapters work on both flat and tapered seat plugs$138.75
- OTC®0 to 300 psi Digital Deluxe Compression Tester Set (5605-DG)Universal 0 to 300 psi Digital Deluxe Compression Tester Set by OTC®. Digital Compression Tester Kit helps determine the mechanical condition of the engines' cylinders. The digital gauge is easy to read and can display pressures in PSI,...Measure, record, and playback compression readings on 1 to 12 cylindersPowered by a 9V battery with low power indicator and auto power off$155.08
- OTC®Analog Diesel Engine Compression Gauge (5021)Universal Analog Diesel Engine Compression Gauge by OTC®. Works on any diesel engine to test compression up to 1000 PSI and 7000 kPa. Features include a check valve, push button compression release, and a quick disconnect fitting on the...Designed to help to get your job done rightManufactured utilizing the highest quality materials$221.73
- OTC®Compression Tester Adapter (45612)Compression Tester Adapter 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. It will meet your needs and deliver great quality...Designed to help to get your job done rightManufactured utilizing the highest quality materials$142.98
- S&G Tool Aid®0 to 1000 psi Analog Diesel Compression Tester for 35750 Diesel Compression Testing Set (34700)Universal 0 to 1000 psi Analog Diesel Compression Tester for 35750 Diesel Compression Testing Set 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...Measures cylinder pressure on diesels equipped cars and trucksRecords maximum pressure reached during engine test$78.10
- S&G Tool Aid®0 to 1000 psi Analog Gauge for 33770, 33900, 33950, 33980, 36200, 36250 & 38000 Injection Pressure Testers (33907)Universal 0 to 1000 psi Analog Gauge for 33770, 33900, 33950, 33980, 36200, 36250 & 38000 Injection Pressure Testers (33907) by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using...Designed to help to get your job done rightManufactured utilizing the highest quality materials$25.01
- S&G Tool Aid®0 to 300 psi Analog Petrol Compression Tester (34000)Universal 0 to 300 psi Analog Petrol Compression Tester 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...Test compression on all domestic and foreign cars and most trucksFlex hose eliminates need to remove auxiliary equipment such as power brakes and steering, air conditioning and manifold$64.08
- S&G Tool Aid®0 to 300 psi Heavy Duty Analog Petrol Compression Tester (34300)Universal 0 to 300 psi Heavy Duty Analog Petrol Compression Tester by S&G Tool Aid®. Complete kit for testing compression of gasoline engines on domestic and foreign cars and trucks, also on motorcycles, snowmobiles and lawn mowers....Use to test compression of gasoline engines on domestic and foreign cars and trucks plus motorcycles, snow mobiles and lawn mowersFlex hose eliminates need to remove auxiliary equipment such as power brakes and steering, air conditioning and manifold$126.56
- S&G Tool Aid®0 to 600 psi Analog Gauge for 34500 Pressure Tester (34501)Universal 0 to 600 psi Analog Gauge for 34500 Pressure Tester (34501) 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$24.62
- S&G Tool Aid®3-1/2" 0 to 300 psi Analog Gauge for 53770, 53800, 53865, 53900, 53950, 53980, 56200, 56250, 58000 & 58100 Fuel Injection Pressure Test Kits (58040)Universal 3-1/2" 0 to 300 psi Analog Gauge for 53770, 53800, 53865, 53900, 53950, 53980, 56200, 56250, 58000 & 58100 Fuel Injection Pressure Test Kits (58040) by S&G Tool Aid®. This product is made of high-quality materials to serve you...Designed to help to get your job done rightManufactured utilizing the highest quality materials$32.44
- S&G Tool Aid®90° Swivel Adapter with Quick Coupler (58010)90° Swivel Adapter with Quick Coupler 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$24.19
- S&G Tool Aid®90° Swivel Adapter with Quick Coupler (58009)90° Swivel Adapter with Quick Coupler 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...For multi-port vehicles having restricted access to larger Schrader valvesDesigned to help to get your job done right$36.63
- S&G Tool Aid®Diesel Tester Adapter for 34900 Diesel Engine Compression Tester Set (34770)Universal Diesel Tester Adapter for 34900 Diesel Engine Compression Tester Set 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...Allows a Bacharach brand adapter to be used with Cat. No. 34700, Diesel Compression TesterDesigned to help to get your job done right$22.36
- S&G Tool Aid®Extension Hose for 34700 Diesel Compression Tester (34729)Universal Extension Hose for 34700 Diesel Compression Tester 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...Makes for easier diesel compression testing in areas with restricted clearanceAttaches between Cat. No. 34700, Diesel Compression Tester and Tool Aid brand diesel test adapters$45.87
- S&G Tool Aid®Female Quick Disconnect Coupler (34703)Universal Female Quick Disconnect Coupler 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$15.47
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.