Engine Compression Tester Kit 0-300 PSI | M10 M12 M14 M18

Engine Compression Tester Kit – Accurate Cylinder Diagnostics for Cars & Motorcycles

Keep your gasoline engine running at peak performance with this professional-grade Engine Compression Tester Kit. Designed for both DIY mechanics and automotive professionals, this complete kit lets you quickly and accurately check cylinder compression on virtually any gasoline-powered vehicle — from motorcycles to full-size cars and trucks. Spot worn piston rings, valve issues, cylinder bore irregularities, or head gasket concerns before they become costly problems.

Made in China.

Why Choose This Compression Tester?

• Broad Vehicle Compatibility: Includes four adapters — M10×1.0mm (motorcycles), M12×1.25mm, M14×1.25mm, and M18×1.5mm (motor vehicles) — so it fits a wide range of gasoline engines right out of the box.
• Dual-Scale Gauge: Easy-to-read instrument panel displays both 0–300 PSI and 0–20 bar simultaneously, eliminating guesswork and unit conversions.
• Two Pressure Pipes Included: Straight-line (5.91" / 150mm) and angled (6.30" / 160mm) pressure pipes — both fitted with rubber cone caps — for maximum engine access in tight engine bays.
• Premium Copper Construction: Nickel-plated drain valve is corrosion-resistant and built to withstand heavy workshop use.
• Anti-Scratch Gauge Cover: Acrylic glass gauge face with anti-scratch coating and a rubber protective surround for excellent shock absorption and long-term durability.
• Quick-Coupling & Pressure Release: Built-in quick coupling and pressure release button make connecting and venting fast and effortless.
• ABS Carry Case: All components store neatly in a durable red ABS carry case — ideal for the workshop, garage, or roadside toolkit.

Full Specifications

What's in the Box?

• 1 × Gasoline Engine Compression Tester (with gauge)
• 1 × M18×1.5mm Adapter
• 1 × M14×1.25mm Adapter
• 1 × M12×1.25mm Adapter
• 1 × M10×1.0mm Adapter
• 1 × Angled Pressure Pipe (160mm)
• 1 × Straight Pressure Pipe (150mm)
• 1 × Hose (440mm)
• 1 × Red ABS Storage Case

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Learn more: FuelEconomy.gov driving efficiency guidance

Frequently Asked Questions

Q: Which vehicles is this compression tester kit compatible with?

A: This engine compression tester kit is compatible with most gasoline-powered vehicles. The M10×1.0mm adapter fits most motorcycles, while the M12×1.25mm, M14×1.25mm, and M18×1.5mm adapters cover the majority of cars, trucks, and SUVs with gasoline engines. The two included pressure pipes (straight and angled) further extend compatibility across tight or awkward engine bay layouts.

Q: What can I test with this cylinder compression tester?

A: This compression tester allows you to assess the condition of key engine components including valves, piston rings, cylinder bore, and head gasket integrity. Consistent readings across all cylinders indicate a healthy engine, while low or uneven readings can help you pinpoint which cylinder needs attention.

Q: Does this compression tester require any batteries or power source?

A: No — this is a fully mechanical compression tester with no electronic components. It requires no batteries or external power source, making it simple, reliable, and ready to use straight out of the case.

Q: How do I read the dual-scale gauge on this tester?

A: The large instrument panel displays two scales simultaneously: 0–300 PSI on the outer ring and 0–20 bar on the inner ring. Simply screw the appropriate adapter into the spark plug port, crank the engine, and read the peak pressure value off whichever scale you prefer. The anti-scratch acrylic cover ensures clear visibility in any workshop lighting.