AZUNO Digital Compression Tester for Petrol Engines — 200 PSI, Adapters & Hose

Precise Petrol Engine Diagnostics at Your Fingertips

AZUNO's digital compression tester is designed to help you assess cylinder health with a blend of accuracy and ease. This complete kit brings together a 200 PSI gauge, four adapters for common engines, a 16-inch flex hose, and a durable carry case. The result is a versatile tool ready for the shop or garage, not just a single-use device.

Smart display and measurement

Reliable measurements start with a smart display. The gauge reads with 0.1 PSI resolution and stays within about 1% of the pressure across a 10–200 PSI range. The backlit LCD means clear numbers in dim light, whether you're under a vehicle or in a cramped workspace. The device supports four units, letting you choose the scale that fits your workflow. An auto-off feature helps conserve battery life after 2.5 minutes of inactivity, so you can test multiple cylinders on a busy day.

Efficiency and versatility in the shop

Efficiency matters in real life. The side bleeder valve lets you perform repeated tests without disconnecting the hose, reducing setup time between cylinders. The kit includes four adapters of standard and specialty types, making it easier to reach typical testing ports on a gasoline engine. The 16-inch hose offers flexibility to reach tightly spaced components while maintaining a secure seal.

Durable design and trusted support

Durable performance comes from a design built to endure daily use. AZUNO uses high-quality steel and brass components to stand up to routine testing in a shop or garage. This is supported by a one-year warranty and ongoing online support to help with setup, use, and any questions you may have.

In practice, you can use the tester to gauge compression after routine maintenance, after engine rebuilds, or during diagnostic sweeps for signs of worn rings, leaky valves, or head gasket issues. While not a guarantee of engine health, consistent readings across cylinders can help you prioritize the next diagnostic steps or repairs.

What you get

• Deluxe design set with 4 adapters and a 16-inch flex hose gauge assembly
• Durable case keeps all parts secure and organized
• Smart display with backlight and four unit options
• Side bleeder valve for repeated testing without disconnecting the hose
• One-year warranty and online support for troubleshooting and care

• Fast setup with quick coupler for streamlined testing sessions
• Compact, portable kit that travels well between jobs
• Versatile for a range of petrol engines and testing scenarios
• Clear, actionable readouts that help prioritize next steps