10 Must-have Tools for Mechanics: Expert-Approved Workshop Essentials

Introduction to Essential Mechanic Tools

I’ve actually had people ask me, “If you had to start a shop from scratch”—which I, the people that have asked me, were people looking to start a shop, even a do-it-yourself shop—”What 10 tools do you absolutely have to have?” Today, we’re going to talk about 10 tools I would never run a shop without, whether a hobby shop or professional shop as a mechanic. There’s several tools that you use once in a while or specialty tools that you use once a month or something like that, but definitely 10 tools that are absolute have-to-haves in a shop.

TOP 10 must-have tools for mechanics

1. Drive Impact Wrench
2. Hose Clamp Plier
3. Angle Grinder
4. Fluke 115 True RMS Multimeter
5. Stethoscope for Diagnostics
6. Power Probe Electrical Tester
7. Relay Tester Switch
8. Portable Jump Pack with Air Compressor
9. Smoke Machine for Leak Detection
10. Professional-Level Scan Tool
Bonus: Tool Cabinet

1. Milwaukee Fuel^TM Half-Inch Drive Impact Wrench

Must-have Tools for Mechanics - FUEL™ 1/2" High Torque Impact Wrench

The first one is my Milwaukee Fuel^TM half-inch drive impact wrench. Very, very powerful. I guess I’m an old enough guy that I come from a time where I can remember where there were air tools in a shop where one of my mentors worked with me, and we had all air tools. We had a very big air compressor as well because you had to run all the air tools. But they started to come out with these battery-operated impacts, and we tried multiple different brands. We were happy with this one, happy with that one—you know, it worked, it did the job. But when they came out with the Milwaukee Fuel line, one of the other techs in the shop decided to take a chance and buy one. This is years ago, and we were all just in awe. There were nuts and bolts or lug nuts and things that Snap-on or Matco or different brands of half-inch drive impacts just wouldn’t take loose. These always took it loose.

Now, keep in mind, as we go through all these tools, there are multiple different brands. These are not advertisements. These are what I’ve experienced in the shop with certain brands that I know that work. I’ve had this one for many years, and it has never broken. It always works, and I just couldn’t imagine working without one of these. If I was going to start a new shop, my tool list of things I’m starting to buy—definitely, this would be on top of the list. I wouldn’t even have to think about it. I’ll just be like, “Click,” that would definitely be in the basket.

I’ve actually had a few salesmen stop by and say, “What kind of air compressor do you have? You’ve got to have a three-phase big boy. You need the big ones. We can sell you a $5,000 compressor today.” And I remind them, “We’re in a new era now.” Keep in mind, some of these salesmen are older gentlemen. They’re used to the old days of air, and I remind them, “There are weeks in the shop where three days will go by we didn’t even turn on the air compressor. We’re like, ‘Wow, we didn’t even use it. Why do I need a $5,000 compressor?'” So we are definitely in the era where batteries have taken over.

2. Hose Clamp Plier

Must-have Tools for Mechanics - Snap-on Hose Clamp Plier

Now, let’s move on to the next tool, Hose Clamp Plier. This one’s actually made by Snap-on. There’s multiple different brands. Actually, a lot of these tools are in there. But this is a hose clamp—like the spring-style clamps. This is a special tool that, as you squeeze the plier end, it clamps down like that. You can see. And what these are useful for is sometimes you want to get a radiator hose loose, and you’ve got this much room, and you just can’t get in there. You’re fighting, and you’re getting so mad. I remember when I first bought these, I was the first tech in the shop to buy these. And I had my buddy next to me in the stall next to me fighting and getting mad, and I came over with this tool and just took it off just that fast. He just looked at me in silence. He was like, “Okay, I’m going to have to buy one of those. That’s for sure.”

This one saves so much headache. There’s many times where I’m fighting with a spring clamp, and I’m like, “Nope, I’m not going to fight anymore. I’m just going to get this tool, get it off, and move on.” Very, very good tool. This one is a very useful tool no matter what you do—carpentry, auto mechanics, building a rocket. I don’t know. Whatever you do, these things are so useful.

3. Angle Grinder

I think, in our shop, we use mine or the other guys have angle grinders as well probably 10 times a week. A bolt that won’t come loose or something’s in the way or something’s jammed, and you’re like, “I just need to cut this off of here, and I could really move on.” And it cuts right through, especially exhaust where we’ve had to cut a small piece off or put a muffler on. These things just zip right through. They’re really, really handy. I would not run a shop without an angle grinder with a cutting wheel on it. I just couldn’t imagine without it.

4. Fluke 115 True RMS Multimeter

So, let’s move on to the next one, the multimeter. I’ve had Fluke 115 True RMS for many years. Do you need expensive $10,000 oscilloscopes and all these fancy tools when you’re first getting started? No. They’re nice. They’re nice to have. They’re really good to have. We have them here in the shop. But this can do a lot of the work. It can do ohms, volts (which should be AC and DC), it can check amperage, it can check diodes—all kinds of things. You can just verify there’s voltage somewhere. You can check resistance with maybe like a Hall effect sensor or wheel speed sensor or something. I grab this thing several times a week. I don’t even think about it. I open the door, and I’m always grabbing this thing constantly.

5. Stethoscope for Diagnostics

These next two are actually—I’m going to consider one tool. They’re both a stethoscope. My mentor actually called them “rabbit ears.” I don’t know why he called them that, ’cause you look funny with them on. This is Omega Auto Clinic, but it’s not that type of a clinic. Although we do use these stethoscopes. This one is just a hose. You can breathe into it and you could hear it. You could probably blow someone’s eardrums out if you did that. They probably won’t appreciate that. But you can listen to vacuum leaks. You can listen to any kind of anything—could be air coming out, a tire leaking. There’s so many different uses for this.

There’s many times where there’s a noise or something, and the guys aren’t finding it—maybe an injector or something. I’ll always just reach for these, grab it, and just start listening. I find it within five minutes. It’s really, really handy. The next one doesn’t use a hose. It’s actually a steel rod. And this is great for listening to wheel bearings. Like, you can barely just hear it, but then as soon as you put this on the housing around the wheel bearing while the wheel is turning, you can just hear it. It’s like, [sound effect]. And it really, really helps with that. These are great for wheel bearings or water pumps. You can listen to the water pump and listen to the bearings while it’s spinning. Be careful not to get this in the fan or in the belt or something. But very, very handy. Again, this is a tool I probably use several times a week as well. I’m constantly grabbing for my “rabbit ears,” as my mentor called them. So that would definitely be on my checklist of things to buy if I was opening a new shop.

6. Power Probe Electrical Tester

On to the next one. The sixth one—you guys have seen me use several times in the shop—is a Power Probe. You connect these two to a battery, and then from there, this little—looks like a little handle or something—it has a button here. And if I’m doing electrical testing, I can give something a power or give it a ground, or I can just touch it and test if there’s power or test if there’s ground. It will let me know. It actually makes beeping noises, kind of like R2-D2. And there’s been many times where we’re like, “Is this blower motor any good?” And they’re fighting and trying to figure this out, and I’ll grab the Power Probe and back-probe the connector to the blower motor, give it power, and the motor comes on. We just eliminated that. Move on to the next thing.

That’s really what this thing is so powerful about. It cuts the BS. There’s no games. There’s no figuring or guessing. You can just go down the line and say, “This is good. That’s bad. I got power. I got ground. This is good.” And pretty soon, you found the problem, and it saved you hours of diagnostic time. There’s been many times where we have a headlight out, and I wonder if the bulb is burned. I grab this, put it on the connector—boom—the light comes on. Obviously, it’s not a bulb. Move on.

You guys know I like decisive answers—yes and no. And that’s what this thing does. It’s this or that—yes or no. Okay, move on to the next one. Yes or no. Okay, move on to the next one. You can use this in fuse boxes, lights, blower motors, any kind of bulb or anything that’s on the car. There’s so many different uses for this thing—electric fans for radiators. Very powerful tool in a shop. And they’re not that expensive. They’re not like $800 or $900 bucks. They’re like $100 or $200 bucks. Definitely get one of these.

7. Relay Tester Switch

The next one are really small. We’re going to have to get up and close personal here and show you these little relays. They look like a normal relay. They plug in just like a relay. But the trick to these things is that—can, just like the Power Probe—it can answer questions: yes or no, black and white, no in-between, no gray area. It gives you solid answers. If you look on this one—which actually all of them have this—it’s an on-off switch. So if you’re curious if something—whatever this relay is supposed to control—the actual relay is working or not, whether it be a fan or a headlight or whatever, I can take the relay out, put one of these little testers in, and now the computer doesn’t control that anymore. I control it with this switch.

Let’s say I’m testing a radiator fan. I put the relay in—or the relay tester—I turn it on, the fans come on. I now know from this relay to the fans, there’s nothing wrong. The problem is from this relay to the ECM. It divides your diagnostic work in half. Very, very powerful tool. Again, these aren’t $600 or $700. They’re like $80 or $90 bucks.

8. Portable Jump Pack with Air Compressor

On to the next. The next one is a jump pack to jump cars. You frequently have dead cars in a shop, whether it’s your own personal cars or customer cars. You go to move a car, and it’s dead. It’s probably why it’s in there. The battery has issues. And he’s like, “Well, I just need to jump-start this and move this thing. I don’t have time to be fooling around.” These things are so good. This one actually comes from BendPak or Ranger Products. It has a very powerful 2,000-amp jump starter, which you connect these to the battery, turn it on, and it will jump-start vehicles for you.

This one also has an air compressor built in for tires. You can see here’s the little air chuck, and you select the PSI you want here down here, and you click “pump.” It’ll fill up a tire for you using the battery pack that’s inside. Many of us experienced the extreme cold last week where our tire pressures dropped, our battery levels dropped—all kinds of things went haywire. This can get your air pressure back up to snuff really fast, and you don’t have to wheel out a large air hose or something like that. It also has a very bright light on it. If you’re working on something and you need some light—there you go. And it’s blinding. Trust me, it’s very, very bright. I don’t want to shine it at you. That’s probably not going to be very appreciated. But thanks to B·PACK for sending these to us. These are so useful. I frequently see one of the guys in the shop going to grab their jump packs like, “This thing won’t start,” they click it on, start the car, and move it and do whatever they need to do. So definitely one of these guys in the shop.

9. Smoke Machine for Leak Detection

The next one kind of looks like a battery or some kind of a jump pack, but it’s not. It’s actually a smoke machine. You connect these two connections to the car’s battery or just a battery, and you hook up an air hose here. It has an automatic regulator built in, and then it’ll actually put out low pressure—one PSI, half a PSI. It’s not high pressure like a smoke generator. This is so handy for finding vacuum leaks or exhaust leaks or all kinds of different leaks that deal with air or gases or things of that nature. You just plug this into a vacuum port somewhere on an intake manifold, and it’ll fill the whole manifold up with smoke. And before you know it, smoke will come pouring out of the exact area where your leak is. Boom. You just found out where the vacuum leak is.

This is one of the few tools that still uses air. It needs air for pressure. We do need to hook air to this for it to work. This is an old unit. It’s still working. It’s amazing it’s still working. But you use baby oil or mineral oil. That’s all we use. It actually has a little dipstick right here—I’ll show you—it tells how much oil is in the tank. We can see that it’s full. And it just heats up the oil enough to make smoke come out. And it answers the question, “Where is my vacuum leak?” and you get the answer in like two minutes or less. You wouldn’t want to run a shop without one of these.

10. Professional-Level Scan Tool

On to the next one—if you’re a do-it-yourself hobby shop—you need a kind of a mid-level Autel Scan Tool, some way to read codes. It just basically reads codes and OBD2 data and stuff like that. But if you’re running a professional shop, you really need a professional-level scan tool—not the $50 one at the part store, but the $2000, $3000, $4,000 one. Very expensive.

Actually, just had a guy not too long ago stop in the shop. He’s looking to start his own shop several cities away from here, and he was like, “I got to know what scan tool I should buy. There’s 10 of them I could buy. Which one?” For us, since we do a lot of Euro and exotic, the only thing that works on a broad spectrum—a general spectrum—is here we have the Autel MS906. We also have a 908 and we have also an IM608, which Grimes uses to program modules, program keys, things of that nature. It’s very expensive. This one here is kind of a cheaper model. It does 80% of what the other ones can do. You can pick them up for $1,200, $1,400, $1,600 depending on what features you need.

We’ve had very good luck with the Autel tools. They do require a subscription each year. You have to upgrade or update—it’s $500, $600, $700 bucks depending on which model you have. But we’ve taken this same tool and diagnosed a Lamborghini Gallardo and turned around and diagnosed a Honda Accord, and then a Jaguar XF, and then a Maserati, and then a Porsche. I mean, this thing does all of those. Very, very powerful tools. So in today’s world of electronics and ECMs and computers and things, you have to have a powerful professional-level scan tool.

Bonus: Tool Storage Solution – ARTMAN Ultra Series Tool Cabinet

The ARTMAN Ultra Series Tool Cabinet is a great option for anyone who wants secure and accessible storage for their tools. Featuring multiple drawers with smooth glides, a durable steel frame, and heavy-duty caster wheels, this cabinet keeps everything in place while allowing easy mobility around your workspace. Whether you’re storing pliers, screwdrivers, or power tools, this cabinet helps you maintain order and maximize productivity. If you’re serious about tool organization, investing in a high-quality tool cabinet like this is a smart move.

ARTMAN Ultra Series Tool Cabinet Roller

Multiple Options: Available in 2-door, 4-drawer, 5-drawer, 6-drawer, and 7-drawer designs to suit different storage needs.
Smooth Operation: Ball-bearing drawers ensure quiet and effortless opening and closing.
Secure Storage: Comes with a key-locking system to keep tools and valuables safe.
Easy Mobility Design: Features 4 steering wheels (2 with parking brakes) for easy mobility.

Check Price

Conclusion

And there you have it—10 must-have tools that keep our shop running smoothly, whether we’re tackling a stubborn bolt, diagnosing electrical gremlins, or chasing down vacuum leaks. From the brute force of the Milwaukee Fuel impact wrench to the pinpoint precision of the Autel scan tool, these essentials save time, reduce frustration, and let us focus on what we love: turning wrenches and solving problems.

If you’re stocking your shop—or even just upgrading your garage setup—these tools and brands (yes, Milwaukee, Snap-on, Fluke, and others mentioned here) have earned their stripes in the trenches. They’re tried, tested, and trusted to deliver when it matters most.

Got a favorite tool that didn’t make the list? Or maybe a story about how one of these saved your bacon on a tough job? Drop a comment below—we’d love to hear from you. And if this list helped you out, share it with your gearhead buddies. After all, good tools (and good advice) are meant to be passed around.