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Car Borescope Series | Ralcam Engine inspection

Your engine on screen, without pulling a single bolt. Ralcam car borescopes are sized for passenger-car spark plug holes — slim enough to drop straight in, bright enough to show carbon, scoring, and coolant where you'd otherwise be guessing.

RALCAM articulating borescope with 6 LED lights, 6.2mm lens, HD screen showing engine internal view, carrying case Save up to 17% Save %
$239.99 - $369.99
$239.99 - $369.99
$239.99
$209.99 - $319.99
$209.99 - $319.99
$209.99

4-Way Articulating Borescope – Ralcam F606B

Ralcam
In stock

Ralcam F606B — 4-Way Articulating Borescope with 4.3" Screen The F606B steers its camera tip independently up, down, left and right, so you can rou...

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$239.99 - $369.99
$239.99 - $369.99
$239.99
$209.99 - $319.99
$209.99 - $319.99
$209.99
Save up to 17% Save %
Ralcam articulating borescope with 3.3ft flexible cable and smartphone display inspecting pipes
RALCAM articulating borescope with smartphone showing aircraft engine inspection and carrying case Save up to 50% Save %
$169.00 - $199.00
$169.00 - $199.00
$169.00
$99.99 - $189.00
$99.99 - $189.00
$99.99

Endoscope Camera for Android & iPhone – Ralcam F408A

Ralcam
Low stock

Ralcam F408A — Phone-Connected Articulating Borescope The F408A turns your iPhone or Android into a professional inspection camera. Plug the probe ...

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$169.00 - $199.00
$169.00 - $199.00
$169.00
$99.99 - $189.00
$99.99 - $189.00
$99.99
Save up to 50% Save %
RALCAM 5-inch screen waterproof articulating engine borescope with flexible cable and carrying case Save up to 20% Save %
$149.99
$149.99 - $149.99
$149.99
$119.99 - $128.88
$119.99 - $128.88
$119.99

Automotive Inspection Camera – Ralcam N505 | 2-Way Borescope

Ralcam
In stock

Ralcam N505 — Automotive Inspection Camera with 5" Screen The N505 pairs the largest screen in the 2-way range with a battery you can replace in th...

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$149.99
$149.99 - $149.99
$149.99
$119.99 - $128.88
$119.99 - $128.88
$119.99
Save up to 20% Save %
Ralcam M506 modular borescope with interchangeable probes, 5-inch HD display and 4-way articulation Save 9% Save %
$439.99
$439.99 - $439.99
$439.99
$399.99
$399.99 - $399.99
$399.99

Ralcam M506 Modular Borescope – Interchangeable Probes, 5" HD

Ralcam
In stock

The Modular Inspection Camera Built for Professionals Stop carrying multiple scopes for different jobs. The M506 Modular Borescope System centraliz...

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$439.99
$439.99 - $439.99
$439.99
$399.99
$399.99 - $399.99
$399.99
Save 9% Save %
Articulating borescope with 85mm lens attached to smartphone showing engine inspection, compatible with iPhone, Android, and iPad
Articulating borescope with flexible cable, handheld controller, smartphone display showing gears, and carrying case
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$199.99
$199.99 - $199.99
$199.99
$119.99 - $159.99
$119.99 - $159.99
$119.99

Smartphone Borescope – Ralcam H406A | 6.2mm Engine Inspection

Ralcam
Out of stock

Ralcam H406A — Detachable Smartphone Borescope The H406A uses the same concept as the F408A — phone as your display, probe as the camera — but adds...

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$199.99
$199.99 - $199.99
$199.99
$119.99 - $159.99
$119.99 - $159.99
$119.99
Sold out
Ralcam borescope with 4.3-inch HD screen, 1.5m flexible cable, 6 adjustable LED lights, 180° wheel control
Industrial borescope with 4.3-inch HD screen, 6 adjustable LED lights, flexible cable, and carrying case
Save up to 30% Save %
$179.99 - $209.99
$179.99 - $209.99
$179.99
$119.99 - $149.99
$119.99 - $149.99
$119.99

Automotive Inspection Camera – Ralcam H406B | 4.3" Borescope

Ralcam
In stock

Ralcam H406B — Detachable Automotive Inspection Camera The H406B separates the probe from the handset. Swap between a 6.2 mm and an 8.5 mm probe fo...

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$179.99 - $209.99
$179.99 - $209.99
$179.99
$119.99 - $149.99
$119.99 - $149.99
$119.99
Save up to 30% Save %
Ralcam M608U UV crack detection 4-way articulating borescope with 5-inch HD screen and UV light
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$888.00
$888.00 - $888.00
$888.00
$709.40
$709.40 - $709.40
$709.40

UV Crack Detection Borescope – Ralcam M608U 4-Way Articulating

Ralcam
Out of stock

Ralcam M608U UV Crack Detection BorescopeThe Ralcam M608U is a professional UV inspection borescope built to make hairline cracks, weld defects and...

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$888.00
$888.00 - $888.00
$888.00
$709.40
$709.40 - $709.40
$709.40
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Ralcam M6X 4-way articulating industrial endoscope with 5-inch IPS screen and flexible probe
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$399.99
$399.99 - $399.99
$399.99
$359.99
$359.99 - $359.99
$359.99

4-Way Articulating Endoscope – Ralcam M6X | 5" IPS Screen

Ralcam
Out of stock

Ralcam M6X — Professional 4-Way Articulating Borescope with 5" IPS Screen The M6X is built for inspections where a 2-way scope runs out of reach. A...

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$399.99
$399.99 - $399.99
$399.99
$359.99
$359.99 - $359.99
$359.99
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2-way 210° flexible engine inspection endoscope with 6.2mm semi-rigid cable and silicone wheel controls
RALCAM handheld 2-way endoscope camera with 6 LED lights, flexible cable, and carrying case
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$165.99
$165.99 - $165.99
$165.99
$119.00
$119.00 - $119.00
$119.00

Portable Endoscope – Ralcam N306S | 3.5" Compact Inspection Camera

Ralcam
Out of stock

Ralcam N306S — Portable Endoscope with 3.5" Screen The smallest standalone scope in the Ralcam range. A 3.5" screen, a 6.2 mm probe and a quick-swa...

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$165.99
$165.99 - $165.99
$165.99
$119.00
$119.00 - $119.00
$119.00
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4-way articulating borescope with flexible black cable and smartphone showing engine gears, waterproof and phone compatible
Ralcam 4-way articulating borescope with 39mm camera and LCD display showing engine gear inspection
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$249.99 - $269.99
$249.99 - $269.99
$249.99 - $269.99
$249.99

Endoscope for iPhone & Android – Ralcam F606A | 4-Way

Ralcam
Out of stock

Ralcam F606A — 4-Way Articulating Borescope for iPhone and Android The F606A gives you full 4-way 360° articulation through your phone — the same i...

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$249.99 - $269.99
$249.99 - $269.99
$249.99 - $269.99
$249.99
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210° bi-directional articulating borescope with 4.3-inch screen inspecting engine components
RALCAM R406 2-way articulating borescope with 4.3-inch screen showing gear image and carrying case
Save 75% Save %
$559.99
$559.99 - $559.99
$559.99
$139.99
$139.99 - $139.99
$139.99

Automotive Endoscope – Ralcam R406S | 4.3" HD Inspection

Ralcam
In stock

Ralcam R406S — Automotive Endoscope for Engine Inspection The R406S is built for one job: getting a clear look inside an assembled engine without p...

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$559.99
$559.99 - $559.99
$559.99
$139.99
$139.99 - $139.99
$139.99
Save 75% Save %
RALCAM handheld 2-way endoscope camera with 6 LED lights, flexible cable, and carrying case
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$139.99
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$139.99
$109.99 - $127.78
$109.99 - $127.78
$109.99

Car Inspection Camera – Ralcam N308S | 8.5mm Engine Inspection

Ralcam
Out of stock

Ralcam N308S — Car Inspection Camera with 8.5 mm Probe At 1600×1200 the N308S resolves finer detail than most inspection cameras in its class — eno...

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$139.99
$139.99 - $139.99
$139.99
$109.99 - $127.78
$109.99 - $127.78
$109.99
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Black RALCAM handheld digital microscope with smartphone displaying detailed metal gears
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$69.99 - $79.99
$69.99 - $79.99
$69.99 - $79.99
$69.99

USB Endoscope – Ralcam C106 | 6.2mm Flexible Engine Inspection

Ralcam
Out of stock

Ralcam C106 — USB Endoscope for Phone and Laptop No battery to charge, no app to pair. The C106 draws power over USB OTG from whatever it is plugge...

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$69.99 - $79.99
$69.99 - $79.99
$69.99 - $79.99
$69.99
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Ralcam articulating borescope with 6.6ft semi-rigid cable and 180° wheel control for bending in narrow spaces
RALCAM articulating borescope with HD screen showing engine piston, flexible camera cable, and carrying case
Save up to 49% Save %
$260.00 - $329.99
$260.00 - $329.99
$260.00
$168.00 - $177.00
$168.00 - $177.00
$168.00

Portable Articulating Borescope – Ralcam F408B

Ralcam
In stock

Ralcam F408B — Portable Articulating Borescope with 4.5" Screen The F408B is a stand-alone articulating borescope with a large 4.5" IPS display — b...

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$260.00 - $329.99
$260.00 - $329.99
$260.00
$168.00 - $177.00
$168.00 - $177.00
$168.00
Save up to 49% Save %

A Car Borescope for Everyday Garage Work

Most car problems are visible long before they are audible. A borescope through the spark plug hole answers the questions that otherwise cost you a teardown: is that carbon buildup on the GDI intake valves bad enough to walnut-blast, is the piston crown scored after a suspected hydro-lock, is a valve actually seating before you commit to a compression test.

Starting out

If this is your first inspection camera, a 6.2 mm probe with a 1 m semi-rigid cable covers almost every passenger-car job. Semi-rigid matters more than people expect — it holds the shape you bend it into, so the tip stays where you put it instead of flopping down the bore. Entry models start under $100 as phone-connected probes; from around $110 you get a built-in screen and no phone to juggle under the hood.

Going further

2-way steering is the practical sweet spot for cylinder walls and intake runners. Step up to 4-way when you need to look back at a valve face or sweep a chamber systematically.

Working across trucks, fleet vehicles, and shop equipment too? The full professional range lives in automotive borescopes.

Choosing the Right Borescope

Which Ralcam borescope is best for car engine inspection?

For most automotive work we recommend a 2-way articulating scope with a 6.2mm probe and a semi-rigid cable — the H406B, N5 and R406S are popular with mechanics. The 6.2mm head fits standard spark-plug holes, and the semi-rigid cable holds the shape you feed into the bore. For complex multi-bend inspections, step up to the 4-way F606B.

Can I inspect cylinder walls through the spark-plug hole? What diameter fits?

Yes. A 6.2mm (or smaller 3.9–5.5mm) probe passes through a typical spark-plug hole so you can view the cylinder wall, piston crown and valves without removing the head. Articulate the tip and rotate the probe to sweep the bore. Choose a semi-rigid cable so it feeds in and holds position.

Can it withstand engine heat, oil and fuel residue?

The insertion tube and camera head are IP67-rated waterproof and oilproof, so oil, coolant and fuel residue won't harm them — just wipe the probe clean afterward. Always inspect a cooled engine; the probe is built for mechanical inspection, not sustained high heat.

Do I need 2-way or 4-way articulation for engine inspection?

2-way articulation covers most automotive diagnostics — you steer the tip in one plane and rotate the probe to reach any angle, and a probe lock holds the shot steady. Choose 4-way (joystick) when you frequently navigate tight multi-bend paths such as turbine internals or deep intake tracts.

FAQ

What is a borescope and what is it used for?

A borescope is an inspection camera designed to access hard-to-reach areas. It is widely used for automotive diagnostics, pipe inspection, HVAC maintenance, and industrial applications.

How do I choose the right borescope?

Choosing the right borescope depends on your needs. Key factors include probe diameter, cable length, articulation (2-way or 4-way), and whether you need a standalone screen or smartphone connection.

What industries are your inspection cameras suitable for?

Our borescopes are used across multiple industries, including:

  • Automotive repair
  • Plumbing and drainage
  • HVAC inspection
  • Construction and maintenance
  • Industrial equipment inspection
How long does the battery last?

Battery life depends on the model, but most standalone borescopes provide 3–5 hours of continuous use on a full charge.

Which borescope is best for beginners?

For beginners, we recommend starting with a model that has a built-in screen and simple controls. These models do not require additional setup and are easier to operate.

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