1. Lugnut spacer
   Spark plug gap tool
2. Wheel spacer
   Carburetor calibrator

Spark plugs act as little detonators for a series of explosions, so if they're not appropriately gapped, they can fire at the wrong temperature. This incorrect temperature can cause several engine issues, including misfire and inefficiency. Almost all spark plugs require a gap that falls into the 0.028-.06 inch range. You should always check the gap on a clean plug, so using a wire brush to clean the electrode might be needed before measurement.

1. Air filter
   Oil filter
2. Cabin filter
   Fuel filter

It's no surprise that the underside of a vehicle is an incredibly nasty place that acts as a sponge for roadway grime. This grime accumulates on the oil filter and can make it incredibly challenging to get a tight enough grasp on to change it. Other tools that are practical to use for removing an oil filter include specialty channel-lock pliers or grooved wide-mouthed pliers.

1. Magna-Grip
   Vise-Grip
2. Torque-Grip
   Grip-Guard

The Irwin Vise-Grip has been gracing mechanics toolboxes since 1924, and not much has changed about its design. A good pair of these multi-function pliers have been known to be passed down from generation to generation. Other companies create a similar tool, like the locking pliers shown here, but unless it says Irwin, it's not a true Vise-Grip.

1. Fuel combustion
   Coolant temperature
2. Air pressure
   Turbo boost

The tire pressure gauge isn't something that should just be tossed into your glove box for use if you notice your tire looks a little low; it needs to be used more than you think! With every fluctuation of temperature, a significant change in tire pressure can occur, causing your rubber to meet the road inefficiently. Even with modern TPMS equipped vehicles, it's still a good idea to check for yourself. Better safe than stranded with a flat!

1. Stuck lug nuts
   Overly torqued bolt
2. Stripped screw
   Lack of upper body strength

They might share a verb, but an impact wrench and an impact driver are two very different things. An impact wrench is used most commonly for lugnut removal and can deliver a massive amount of torque in a fraction of the time. Using an impact wrench to loosen an incredibly tight nut can take only a fraction of the time conventional elbow grease could provide. An impact driver, however, does a very similar thing, but for driving screws.

1. Exhaust opening
   Piston rings
2. Fuel line
   Hose openings

Piston rings can pose an incredibly difficult challenge for a person trying to rebuild an engine without the correct tools. Once you're deep inside of the engine cavity, you will find a cornucopia of little pieces, like the piston rings. After you have pulled the piston to access the ring, you'll need a small tool that can stretch the ring enough to slide over the piston. You could MacGyver your way using various tools lying around, but why?

1. Gauges timing belt tension
   Separates fused wires
2. Pulls stuck spark plugs
   Separates belts from pulleys

A timing belt tension gauge is specially designed to determine the exact measurement of timing belt tension. If a belt is too tight and runs over a long period, the pressure can actually snap the camshaft. Should the belt be too loose, it will rattle around in the engine and create various forms of havoc internally. Bad timing belt = no travels!

1. Transforms into a screwdriver
   Easily adjustable pinch size
2. Can be used as a tire tool
   Locking properties that replicate an extra hand

Not everyone has room to haul around an entire mechanics toolbox on every outing, complete with various socket sizes and wrenches. That's why a fully adjustable pair of channel locks is a perfect tool to throw into your truck and hopefully forget about. The length of the handles gives you great leverage for loosening tight bolts, and the adjustable pinch point can quickly transform from a gaping opening to a tiny crack in no time.

1. Gravity
   Leverage
2. Heat
   Cantilever

Believe it or not, a lot of physics goes working on your vehicle; you just might not have thought about it. A breaker bar is a perfect example of how the laws of physics make simple, yet tricky tasks possible by using leverage. A seized bolt might not budge with your standard handled wrench, but throw an additional amount of handle to it, and the bolt magically budges. A combination of radial and tangential forces create this impressive display of brute force, with minimal effort!

1. An empty fuse slot
   The OBD port
2. Directly into the ignition
   The cigarette lighter

OBD, also known as on-board diagnostics, was first introduced in 1969 and was found in the Volkswagen Type 3. Fast forward almost 50 years, and every single car has them. These handy ports can inform you in incredible detail what's going on with your car, beyond what an illuminated "check engine" light on the cluster can tell you.

1. Loose wires
   Hose clamps
2. Exhaust unions
   Fuel lines

Hoses, especially those that are part of the cooling system, undergo incredibly high pressure and can be in tricky places. These pliers are equipped with a flexible extension that can snake its way into some of the hardest to reach engine cavities. Distancing yourself from the hose can also protect you from getting sprayed or dripped on by any fluid trying to escape. Even if you only use your hose clamp pliers once or twice, they're still cool to have!

1. Transmission fluid
   Used motor oil
2. Brake fluid
   Coolant in radiator

Braking systems rely on hydraulic force to work, so if there are any inconsistencies with the fluid in the system, like an air bubble, problems will arise. Whenever that system is jeopardized, like a failing master cylinder, air can infiltrate the closed system. A brake bleeder kit uses a vacuum force to pull fluid from the system and extract air, making room for new fluid. All four wheels must be bled, not just the serviced area.

1. Crack heads
   Split nuts
2. Separate (control) arms
   Pinch wires

Sometimes nuts aren't in the mood to be loosened. Even with all of the twisty tools in the garage, even the best impact wrench can't budge it. Don't give up, use a nut splitter instead! Place the open end of the nut splitter over the stubborn nut and twist the screw bit until the nut cracks. From there, you'll be able to remove it and go about your merry way.

1. Hoses
   Wires
2. Fuel lines
   Fish

These hooks might not look like much of a big deal, but anyone who has ever had to fish wires or thin hoses out of tight spaces will beg to differ. Not only can these little hooks fish out stubborn to reach items, but they can also be used to separate wire or tightly coiled springs. It's also pretty handy to dig that piece of meat out from between your teeth after lunch, giving you more time to focus on your work and not the meaty inconvenience in your mouth.

1. Removing the entire brake pad
   Retracting the piston back into the caliper
2. Separating fused metal from the rotor
   Holding the caliper open to insert new pads

When it's time to change brake pads, it's not always as simple as just slapping a new set on. The caliper that pushes the pad into the rotor has to compensate for the gradual pad wear continuously, and the piston that does this eventually becomes fully extended. Replacing that piston requires this handy dandy caliper tool. Without retracting the piston, it would be impossible to replace the brake pad without totally disassembling the brake system.

1. Rotor temperature during race conditions
   The temperature of heat leaving cabin vents
2. The temperature of various radiator components
   Analyze the ambient temperature outside

Much like taking your own temperature to find out if you're sick, you can take your car's temperature in various places to see what ails it. By pointing and shooting at places like a belt pulley, you can see whether it's spinning smoothly or not. It's also helpful for diagnosing and locating issues with the cooling system, like a blockage.

1. Camshaft
   Piston ring
2. Connecting rod
   Timing chain

When you're a dedicated mechanic, the guts of a motor don't frighten you. With this tool, you don't have to worry about damages to volatile cam lobes, bearings or any surfaces surrounding the area. All engines are different, and there are various cam tools for each one!

1. Fuel
   Gear oil
2. Antifreeze
   Transmission fluid

There might be fluid in your radiator, but is it really doing an efficient job at keeping your engine cool? After virtually countless cycles of boiling and cooling, antifreeze can become funky. The tester can determine if what ratio you're running, with the goal being at least a 50/50 ratio of water to antifreeze. Should your nifty tester determine an inappropriate ratio, a fluid flush is in order!

1. Adjusts brake caliper position
   Gaps very large spark plugs
2. Extracts blade and glass fuses
   Pinches audio head units for removal

These incredibly simplistic plastic tweezers can make the chore of pulling questionable fuses an absolute breeze. The layout of many fuseboxes is cramped and leaves very little room for fingers to navigate the fuses arranged in incredibly close proximity. Skip the pinching attempt and splurge on this tool, which costs less than $5. Worst case scenario, you can use it on your nose hairs at stoplights between fuse swaps.

1. Carburator float pin
   Thermostat roll pin
2. Brake caliper pin
   Fuel gauge pin

Braking systems undergo a massive amount of stress every single time you step on the brake pedal, which leads to them getting pretty worn out. A caliper pin can become stuck or "frozen," and cause the entire caliper to malfunction. There are methods of removing this pin without the use of a slide hammer, shown here, such as using a torch.

1. Brake drums
   Clutch
2. Flywheel
   Tensioner pulley

A transmission assembly is an incredibly bulky and cumbersome object to work with, especially if you're trying to install a clutch. If the clutch disc happens to slide, twist, or somehow become misaligned while jostling around the transmission, all of what you have done will be for nothing. This alignment tool slides into the clutch disc and then into the flywheel, holding them together. From there, you'll be able to install the pressure plate and tighten the clutch down to keep it from wiggling around.

1. Retrieves loose change under the seat
   Pulls broken belts from the engine bay
2. Picks locks
   Places windows back on track

Have you locked your keys in your car so many times you have the local locksmith (or criminal) on speed dial to pop your locks? Maybe it's time to invest in your very own set of "jiggler" keys like those shown here!

1. Clean black off of diesel exhaust
   Remove crystallized antifreeze
2. Scrub off battery corrosion
   Cleans out cupholder and ashtray

You might not think about it often, but the battery is really an epicenter of action under the hood. A little bit of corrosion around the terminals is acceptable, but when it starts to get caked up, action needs to occur. Caution should be exercised while cleaning corrosion due to the caustic nature of the substance, and this little brush will expedite the cleaning process.

1. Rotary
   Air-cooled
2. Panhead
   Shovelhead

BMW motorcycles produced between 1969 and 1995 were equipped with a unique, heavily finned exhaust nuts. Without a special tool, it is almost impossible to remove the exhaust without doing some damage to the fins. Although the fins are made of durable metal, they can bend and break under tool torque. Given the nature of the environment, these nuts can become caked with carbon between the treads and make it very difficult to turn, even with this special wrench.

1. Fan clutch pulley
   Flex pipe
2. Shift solenoid
   Timing belt

The fan clutch pulley can be tricky to remove because unless you have to hold it still with one wrench while turning with another to loosen. By using this implement, you can separate the pulley from the fan clutch without a bunch of busted knuckles. Should you find that the bolt holding the assembly seems impossible to budge, you can use a breaker bar to give you more leverage.

1. Pinch-off pliers
   Weld-right wrench
2. Timing tool
   Piston grabber

Pinch-off pliers are different from standard pliers because they can pinch something and stay pinched without your help. They can come in handy for projects where you need an extended grip on a bolt or object and aren't able to keep one hand dedicated to holding the pliers. They can come incredibly handy while doing coolant system work and can pinch off a radiator hose to prevent leaking while doing the work. Think of them as an extra hand around the garage.

1. A truck hitch to the correct trailer height
   Motorcycle suspension for passenger weight
2. A cars rear suspension for hauling luggage
   The four-wheel-drive settings on a Jeep

Maybe this isn't a mechanic specific question, but this tool will undoubtedly be found in the garage! This item enables you to adjust the shock length on your motorcycle to compensate for a second rider. Before going for a ride two-up, the rear springs should be lengthened. Failure to do so will result in a very unbalanced motorcycle ride and general difficulty while maneuvering.

1. Starter
   Alternator pullies
2. Carburator
   Radiator

If you haven't noticed yet, many automotive parts have specific tools that make servicing them easier. The alternator is no different and has its own tools available to alleviate at least some of the aggravation that accompanies having to swap out a clutch-type alternator pulley. You don't necessarily need these unique tools, but hey, what's another specialty toolset going to hurt?

1. Ratchet reacher
   Extendo-ratch
2. Ratchet extender
   Ratchet arm

There isn't much explanation needed about this savior of the socket set. Ratchet extensions in a couple different lengths are something everyone with a mechanics toolbox needs.

1. Vehicle lift
   Floor jack
2. Bottle jack
   Any of the above

This kit is most likely found in an alignment shop and is used to fix vehicles that are a little less than driving on the straight and narrow. These kits can adjust and make small changes, but are hardly a solution should the alignment be severely out of whack. In those cases, more drastic measures are called for, like replacing the control arms.

1. Inside diameter of an exhaust opening
   Inside diameter of a cylinder head
2. Circumference of wheel hubs
   Total fuel tank capacity

A cylinder bore gauge is used to determine the exact inside diameter of a cylinder head. After a piston travels in a cylinder for a prolonged time, friction takes its toll and wears out the walls. In some aluminum blocks, the cylinder head can become slightly oval from heat and pressure and need to be rebored to achieve an efficient chamber again. Getting the precise measurement of the bore is imperative for efficient piston travel.

1. How tightly a bolt is fastened
   How much force a bolt needs to be twisted at
2. Amount of force needed to break a bolt
   The depth of a stud of bolt

Every single bolt that goes into a vehicle has a particular job, whether it holds a wheel on or keeps your seat in place. Most of these bolts can simply be tightened to a vague degree of tightness, but more strategic bolts need an exact amount of snug. Perhaps one of the most critical pieces of the automotive puzzle to be torqued correctly is the head bolts. Improper tightness can destroy an engine!

1. The Clarkson corner ratchet
   A Gimbal ratchet
2. C-1300 angled ratchet adapter
   The Kanne Special

Remember that kid in your class that could weirdly bend their finger and was incredibly proud of being double-jointed? This is the tool version of that kid. The Gimbal ratchet can pivot to reach otherwise inaccessible areas. In some circumstances, it can even prevent you from having to remove other parts to work on the part you really want to work on.

1. Harp connector, on the throttle cable
   Threaded violin stud, inside an alternator
2. Banjo bolt, by the braking system
   Bass banding, next to the muffler

We promise this is the very last brake oriented item to be included in this quiz. A Banjo bolt, despite its catchy name, isn't an up and coming Bluegrass band. The bolt itself is specially designed for use in fluid-filled systems and has a hole in the shaft for fluid transfer. Depending on what mechanic you ask on the internet, some say they're called banjo because they were used for tuning banjos, others say it is because they resemble a banjo. You be the judge.

1. Replace air conditioning components
   Remove the starter assembly
2. Slide the stock radio out of the dash
   Pull out failing air filters

The air conditioner clutch holding tool does about the same thing as the alternator wrench and the clutch fan tool. Despite being shaped like a fly swatter from Mars, it's actually quite useful. The posts lock-on and pretty much instructs the clutch to stay put while you wrestle with the surrounding elements. It saves you a lot of busted knuckles and curse words.

1. Crankshaft seals
   Head gasket
2. Piston gaskets
   Windshield rubber

The tedious task of replacing a crankshaft doesn't need to be compounded by trying to remove an aggravating seal! A crankshaft seal puller can do it for you. The seals' primary purpose is to prevent oil from going where it shouldn't; therefore, it spends its entire life becoming incredibly gross. This tool is designed to slide behind the seal and remove it in one fell swoop as cleanly as possible.

1. Compression
   Airflow
2. Fuel delivery
   Exhaust

An engine needs to be both an open and closed system but at very different times. When required to be closed, the pistons travel downward and require an airtight seal to compress the air and fuel mixture the most effectively. When the system is open, all that compressed air escapes. When the compressed air tries to escape before the exhaust cycle, due to worn piston rings or an improperly seated valve, the engine struggles to work efficiently. If an engine signals that it's not happy, a compression test is a great place to start.

1. Removing locked seatbelts
   Removing an airbag unit
2. Opening the trunk from inside
   Overriding cruise control

For whatever reason, you might have to remove an airbag; doing so in the wrong manner can result in it exploding in your face. Using an airbag removal tool takes the fear of the explosion out of the equation while working. This tool releases the retention springs and causes the airbag to be inoperative. The most common reason to use this tool is to alleviate an airbag fault light. A lesser reason is to extract the bag to prepare for a 24 Hours of Le Mans race.

1. Calloway clutch-out
   Pitman arm puller
2. Axle removal tool
   Yoke yanker

If you wiggle your steering wheel and have a lot of play without your actual wheels moving, chances are you might have to replace your pitman arm. The pitman arm is nestled in a steering shaft and needs a little coaxing to get out; that's where the removal tool comes in! Most modern cars have converted over to electric steering and do not need a pitman arm puller.