Skip to content
Country

Teslong · Automotive Inspection

Automotive

For cylinders, valves, under-dash and exhaust inspection

Teslong automotive borescopes let DIY mechanics and repair shops see inside engines and vehicles without a teardown — through the spark plug hole into cylinders and valves, behind the dash, and along exhaust pipes and frame rails.

Choose by probe size, camera view and steering, then record photos and video of what you find. The finder and comparison table below help you narrow it down.

Shop by use case:

4-Way JoystickFront + Side View6.5 mm IP67 Probe
Shown: TF550 Dual Lens
  • Free US shippingOn orders over $199
  • 30-day money-back guaranteeRisk-free on every model
  • 12-month warranty3 years on F6, F8, N7, T6 & T7 PRO
  • U.S.-based supportCall 877.899.8809

Editor's picks

Best Automotive Borescopes by Job

  • Best Overall for Engines

    TF550 Dual Lens

    4-way steering + side view on a 6.5 mm probe

    ¥96,600

  • Best for Repair Shops

    F6 PRO

    6″ Full HD screen, Wi-Fi and mini HDMI out

    ¥141,000

  • Best for DIY Mechanics

    TD450s Dual Lens

    2-way 210° tip with a side-view lens

    ¥23,200

  • Best for Small Plug Holes

    F8 PRO

    3.9 mm 4-way probe, IP67 and oil-resistant

    ¥181,600

  • Best for Cylinder Wall Scans

    NTS300 Rotating Lens

    Rotating lens sweeps the bore, probe stays still

    From ¥46,400

Quick product finder

Find the Right Automotive Borescope in 30 Seconds

Tell us where you'll look, how you need to aim the camera and how you'll use it — we'll match a model to the job.

1Where on the vehicle will you look?
2How do you need to aim the camera?
3How will you use it?

Your recommendation appears here

Answer all three questions to see the best match for your needs — plus two alternatives worth considering.

All models

Shop All Automotive Borescopes

Filter by where you'll look, who's using it and the feature you need — or let the finder above pick for you.

Where on the vehicle

User type

Key feature

Showing 33 of 33 models

33 products

Side-by-side

Compare Teslong Automotive Borescopes

The models mechanics ask about most — camera, steering, probe size, length, screen and price in one table.

ModelBest forCameraSteeringProbe diameterProbe lengthScreenPrice
TF550 Dual LensAll-round engine workDual4-way joystick, 210°6.5 mm5 ft5″ IPS¥96,600
F6 PROShop diagnosticsDual4-way joystick6.5 mm5 ft6″ Full HD¥141,000
F8 PROSmall plug holesSingle4-way, 360°3.9 mm5 ft6″ Full HD¥181,600
TF600Tight portsSingle4-way, 360°3.9 mm5.08 ft6″ Full HD¥135,200
TF500Precise 2-way controlSingle2-way, 210°6.5 mm5 ft5″ IPS¥86,900
TD500Valves, larger screenSingle2-way, 210°8.5 or 6.5 mm5.08 ft5″From ¥54,100
TD450s Dual LensDIY cylinders & valvesDual2-way, 210°8.5 mm5.08 ft4.5″¥23,200
TD450s Single LensEntry-level steeringSingle2-way, 210°8.5 mm5.08 ft4.5″¥25,200
TD300PBudget steeringSingle2-way joystick, 210°5.5 mm5 ft5″ IPSSold out
NTS300 Rotating LensCylinder wall scansRotatingRotating lens8.5 mm3.2 / 9.8 / 16.4 ft5″From ¥46,400
T7 PRORotating view + Wi-FiRotating dualRotating lens8.5 mm6.5 ft6″ IPS¥79,200
NTS600 Triple LensExhaust & frame railsTripleNone7.9 mm3.2 / 9.8 / 16.4 ft6″Sold out
N7 PROUnder-dash & bodyDualNone (semi-rigid)5.5 mm6.5 ft7″ IPS¥67,600
MS450 Dual LensLong reach on a budgetDualNone8.0 mm16.4 / 33 / 50 ft4.5″From ¥15,500

Shop by job

Automotive Borescopes by Inspection Job

Where you look on the vehicle decides the probe size, camera view and cable length you need.

  • Cylinders & Pistons

    Check cylinder walls for scoring, piston crowns for carbon, and signs of coolant or oil through the spark plug hole — before you commit to a teardown.

    Recommended features

    • 6.5 mm or smaller for small plug holes
    • Side-view lens for cylinder walls
    • Adjustable LED ring light

    Top picks

  • Valves & Carbon Buildup

    Bend the tip back from the combustion chamber to see valve faces and seats, or look in through the intake to check the backs of the intake valves for carbon.

    Recommended features

    • 210° or 4-way articulation
    • Joystick or thumb-lever control
    • Photo and video capture

    Top picks

  • Under-Dash, Doors & Body

    Trace wiring and connectors behind the dash, find rattles and dropped fasteners inside door panels, and look into rocker panels without pulling trim.

    Recommended features

    • Semi-rigid probe holds its shape
    • Monitor stand frees both hands
    • Hook & magnet tips on most models

    Top picks

  • Exhaust, Intake & Frame Rails

    Feed a longer cable through exhaust pipes, intake runners and boxed frame rails to check for blockages, damage and rust from the inside.

    Recommended features

    • Cables of 16.4 ft and longer
    • Rotating or side-view lens
    • IP67-rated probe for wet, dirty runs

    Top picks

  • Shop Diagnostics & Customer Reports

    Record what you find and show it: Wi-Fi models stream to a phone or tablet, and the F6 PRO, F8 PRO and TF600 have mini HDMI out for a larger display.

    Recommended features

    • Wi-Fi remote viewing
    • Mini HDMI output
    • 32 GB card for photos & video

    Top picks

Model line-up

Which Teslong Borescope Line Fits Your Garage?

From household all-in-ones to PRO-series shop tools — here's what each line is built for.

  • Household

    MS450 & NTS500B

    All-in-one cameras with a stand-up monitor and long cables. Affordable for occasional under-hood and behind-panel checks.

    From ¥13,600

    Shop MS450 & NTS500B →
  • Articulating

    TD300P, TD450s & TD500

    Two-way 210° steerable probes for looking back at valves and around corners, from the budget TD300P to the Wi-Fi TD500.

    From ¥23,200

    Shop TD300P, TD450s & TD500 →
  • Pistol grip

    NTS300, NTS430 & NTS600

    One-hand pistol-grip monitors with single, dual, triple or rotating probes; the NTS600 adds a 6-inch screen and Wi-Fi.

    From ¥27,100

    Shop NTS300, NTS430 & NTS600 →
  • Tablet style

    NTS500

    A 5-inch tablet-style monitor with single, dual, triple and rotating probe options up to 16.4 ft.

    Sold out

    Shop NTS500 →
  • Professional

    TF500, TF550 & TF600

    Modular professional scopes with 2-way or 4-way steering on 6.5 mm or 3.9 mm probes.

    From ¥86,900

    Shop TF500, TF550 & TF600 →
  • Flagship

    PRO Series: F6, F8, N7, T6 & T7

    Six- and seven-inch IPS screens, Wi-Fi remote viewing and a 3-year warranty, with 4-way, dual, triple or rotating probes.

    From ¥67,600

    Shop PRO: F6, F8, N7, T6 & T7 →

Buying guide

How to Choose an Automotive Borescope

Four questions decide the right scope: how big the opening is, what you need to see, how far you need to reach, and who needs to watch.

  1. Probe Diameter: Match the Smallest Opening

    An 8.5 mm probe is the toughest choice and fits most spark plug holes. 6.5 mm and 5.5 mm probes leave room to bend the tip inside the cylinder, and 3.9 mm probes (F8 PRO, TF600, NTS300, NTS500 and NTS600 single lens) reach small plug holes and sensor ports.

  2. Camera View: Dual, Triple, Rotating or Steerable

    Dual and triple lenses switch between forward and side views for cylinder walls. A rotating lens sweeps a bore without moving the probe. To look back at valves or around corners, choose a 2-way (210°) or 4-way articulating tip.

  3. Probe Length and Stiffness

    Engine work needs only about 5 ft, and a semi-rigid probe holds its shape behind the dash. Exhausts, intake runners and frame rails call for 16.4 ft or more — the MS450 Dual Lens goes up to 50 ft.

  4. Screen, Sharing and Budget

    DIY users do well with a 4.5- or 5-inch screen. Shops benefit from 6- or 7-inch IPS screens, Wi-Fi remote viewing for customers and mini HDMI out on the F6 PRO, F8 PRO and TF600. PRO-series models carry a 3-year warranty.

Built for the garage

Why Mechanics Choose Teslong Borescopes

Inspection cameras sized and specified for real automotive work — from a weekend fix to daily shop diagnostics.

  • Made for engine work

    Probes from 3.9 mm to 8.5 mm with steerable, rotating and multi-lens options

  • IP67-rated probes

    Splash, water and dust resistant; the F8 PRO probe also resists oil

  • Ready out of the box

    32 GB card on screen models, plus hook and magnet tips with most

  • Record and share

    1080p photos and video; Wi-Fi or HDMI on PRO-series models

  • U.S.-based support

    Free US shipping over $199 and a 30-day money-back guarantee

FAQ

Frequently Asked Questions

Common questions about automotive borescopes — what they do, how to use them, and which one fits your work.

What is an automotive borescope?

An automotive borescope is an inspection tool for the inner mechanisms of an automobile. Borescopes allow for easier viewing inside engines, brakes, catalytic converter tubes, behind instrument panels, inside AC systems, exhaust systems, and much more. What makes this tool so beneficial is it can fit inside small spaces with built-in light for easier viewing. Moreover, these devices can take video and images for future reference.

Some borescopes include a screen, while others connect to a smart device for more options. A long flexible cord with a camera and light built into the tip. The cords are long enough to wind under the hood. Many of the options include multiple attachments such as a mirror, hook, or a magnet to make the borescope more useful.

Next, borescopes are often waterproof so that they can encounter automotive liquids with ease. Options with a screen are usually rechargeable and have space for a memory card for storage of videos and images. The camera on a borescope is either rigid or semi-rigid with the ability to gooseneck the camera. Many cameras are also weather resistant to both cold and hot weather. However, you should never use a borescope in extreme temperatures to avoid damage.

An automotive borescope reduces repair costs by finding the problem without tearing the car apart to find the damage. By pinpointing the problem quickly, car repair has never been easier or more accurate. Moreover, a borescope at home can help car owners to find a problem before taking it to a shop or allow for repairs at home.

Choose from a variety of options to better suit your needs and budgets. Many options come with dual cameras, adjustable lights, and multiple screen designs. Pick a handheld device with a handle or an option that can sit easily on a countertop to free up your hands. Many cord sizes allow for more movability as well.

What are automotive borescopes used for?

Borescopes are used to pinpoint problems inside of a car for easier repair and maintenance. With three varieties to choose from, most mechanics can find the right option for a job. First is a rigid borescope with a camera mounted at the end of a hollow pipe. The second option offers a fiber optic option. Option three is the videoscope ready to take on the spot imagining. Most options are now videoscope as they are the most useful.

Professionals purchase borescopes for use in aerospace, mechanics, and even gun-smithing. Borescopes have the option to wind into smaller spaces to easily help a mechanic inspect internal parts without taking the vehicle apart. Overall, they can increase inspection to reduce costs and time used for finding a problem and repairing the vehicle. Any part of the internal parts of a car that are hard-to-reach require a borescope for diagnostics.

Can automotive borescopes take both video and photos?

Automotive borescopes can take both video and photos. Whether using a dedicated screen or a smart device screen, you can use the camera to view as you go along with taking both images and videos. Dedicated screens include a space for an SD card for storage, while smart device borescopes can store the information on your phone, tablet, or computer. This allows you to have the information easily accessible.

Many borescopes come with dual-lens cameras or split-screen viewing for more views. Moreover, the cameras include focus and zoom for added usefulness. Add in high resolution like high definition for both images and video for exceptional views. Finally, store the images and transfer them to a computer or television to see on a larger scale and improve visibility and collaboration.

How do you use an automotive borescope?

Automotive borescopes are easy to use, starting with turning on the screen display. Make sure the screen is charged and ready to display accurate images. Check before inserting into internal car parts. Next, wind the cable into the area of the car where you need visuals. Move the camera as needed to get a full view of the area with the camera for easier diagnostics in hard-to-reach areas.

When finished in the current area, carefully take the camera out and move to a new area. If you are done, you can turn the device off. Do not forget to remove oils, debris, or other substances that may have gotten on the camera or cord for proper maintenance and to ensure a long life for the borescope. In addition, some scopes include long thin hooks you can use to pull out items causing issues, and those require cleaning as well.

While inside, remember to take pictures, videos, or both of the work area. Images and video allow you to show the problem to others or keep it as a reference for further diagnostics and repair. If you encounter resistance, it's best to stop immediately to prevent damage to the vehicle and the camera. Pull the camera probe out slowly. Never remove the probe forcefully as this can damage the camera and equipment.

What are the advantages to using an automotive borescope?

Automotive borescopes are simple, compact, flexible, portable, and easy to use. Moreover, the devices are accurate and intuitive, with protections from damage and from damaging internal components. However, the absolute best advantage of an automotive borescope is the ability to diagnose problems without disassembling a vehicle. With the ability to diagnose quickly and safely, mechanics can save time, money, and repair.

Another advantage of an automotive borescope is the versatility of the tool. While it can be used for cars, it's also useful for boat and motorcycle repair, along with common household repairs like plumbing. A light allows for better visibility and ensures a proper view of internal mechanisms. Prevent damage to internal areas by seeing problems from a small and durable scope.

With so many options on the market, you can find the exact size and parameters to suit your needs. Moreover, the option to take images and videos allows for collaboration on problems. Use the images to prevent the need to enter the tight vehicle spots before repair to decide on a repair plan. Basically, for a small one-time cost, you can make your job easier and more effective.

What are the key differences between automotive borescopes and endoscopes?

Endoscopes and borescopes are inspection cameras for automobiles along with other purposes, but they offer different applications. However, all endoscopes are borescopes, but not all borescopes are endoscopes. Borescopes are special devices meant to offer an internal view of hard-to-reach areas.

With high-definition cameras, these tiny devices reach into difficult areas to provide a clear view. A borescope has a broader application, while endoscopes are typically used for high-risk areas with no margin for error. Both will allow you to inspect the internal mechanisms of a vehicle without disassembling components of the vehicle.

A borescope works to find common defects and problems. A borescope may have an eyepiece at one end instead of a screen to allow you more visualization. Both can be used to magnify your view of internal car organs to help fix the car, and both also come in either rigid or flexible variations.

Originally, endoscopes were used to examine internal bodies parts and were modified to work for a vehicle. Borescopes were created for automotive bodies along with use in other items like boats, planes, and industrial equipment. While both are very similar, the two do offer some minor differences that can make or break an automotive repair process. Both can have similar diameters, magnification, flexibility, field of view, direction of view, length, and digital viewing.

Overall, a borescope may be more rigid, making it slightly less functional if you need a moveable camera. Endoscopes are more precise compared to a borescope, but both can function for multiple uses. Choose an endoscope for maneuverability, smaller diameter, and level of detail. Borescopes are better for field of view, lighting, and price.

Why choose Teslong automotive borescopes?

Teslong offers a large variety of endoscopes, borescopes, otoscopes, and accessories to help diagnose internal problems easily. We spent decades creating and developing innovative digital products to help people solve problems and make life easier and better.

We focus on manufacturing and exporting high-quality scopes for both home and industrial uses with state-of-the-art technology equipment for affordable prices. We are also dedicated to environmental and societal responsibilities to bring the best products to the market. Our experienced developers design every model to make automotive diagnostics easier.

Try one of our borescopes worry-free for thirty days and find out why we are the go-to choice. Furthermore, we stand by our products and will work with you to fix any problems. Reach us online, by phone, or with live chat to get all the information and assistance you need. We ship worldwide and even offer rewards to help our customers enjoy their products and get the most use from their purchase. Get the best quality for years of useful help from smart products ready to meet your needs.

What size borescope fits in a spark plug hole?

Most spark plug holes take an 8.5 mm probe such as the TD450s or TD500, which is also the toughest size for everyday use. Smaller probes leave more room to bend the tip once it is inside the cylinder: 6.5 mm on the TF550, F6 PRO and TF500, and 5.5 mm on the TD300P and N7 PRO. For small plug holes and sensor ports, the F8 PRO and TF600 use a 3.9 mm probe with 4-way steering.

Remove the plug, turn the engine until the piston sits low in the bore for a full view of the cylinder wall, and stop if you feel resistance.

Can a borescope show the intake and exhaust valves?

Yes. From the spark plug hole, an articulating tip can bend back toward the cylinder head to show valve faces and seats. The TD450s, TD500, TD300P and TF500 bend 210° in two directions; the F6 PRO, TF550, F8 PRO and TF600 steer four ways. With the throttle body or intake manifold off, a dual-lens probe also shows the backs of the intake valves, where carbon tends to build up.

Which automotive borescopes can share live video with a phone or a larger screen?

The TD500, TF600, F6 PRO, F8 PRO, N7 PRO, T6 PRO, T7 PRO and NTS600 series have Wi-Fi remote viewing, so a customer or helper can watch on a phone or tablet, and the TF550 shares live images over its built-in wireless connection. The F6 PRO, F8 PRO and TF600 also have a mini HDMI port for a larger display. Every model with a screen saves photos and video to a microSD card for your repair records.

Not Sure Which Scope Fits Your Engine?

Tell us the vehicle and what you need to see — we'll recommend a probe size and model, or line them up in the comparison table above.

Automotive Borescopes for Engine and Vehicle Diagnostics

An automotive borescope lets you see inside an engine or vehicle without taking it apart. Slide the probe through a spark plug hole to check cylinder walls, piston crowns and valves, or feed it behind the dash, into door panels, along frame rails and through exhaust pipes. What you see on the screen tells you whether a repair needs a teardown at all.

Choosing a Mechanic's Borescope

Start with the opening: 8.5 mm probes fit most spark plug holes, while 6.5 mm, 5.5 mm and 3.9 mm probes leave room to steer inside the cylinder or reach small ports. Then decide how you aim the camera — dual or triple lenses for side views, a rotating lens to scan a bore, or a 2-way or 4-way articulating tip to look back at valves. For exhausts and frame rails, pick a cable of 16.4 ft or longer.

For DIY Garages and Repair Shops

DIY mechanics can start with the TD450s or TD300P. Shops get Wi-Fi remote viewing on PRO-series models, mini HDMI output on the F6 PRO, F8 PRO and TF600, and a 3-year warranty on the F6, F8, N7, T6 and T7 PRO. Free US shipping on orders over $199.

Need help? Call our award-winning support team at 877.899.8809

Your cart 0

Your cart is empty

Find the right tool for your next project.

Estimated total¥0 JPY

Shipping, taxes and final discounts calculated at checkout.

View full cart

Add an order note

Choose options