Prokomon Engine Compression Tester Kit 11‑pc — Dual‑Scale 0–300 PSI/0–20 BAR, Brass Adapters

Prokomon 11pcs Professional Engine Compression Tester Kit is a complete diagnostic set for measuring cylinder compression on gasoline engines with a large dual-scale gauge and multiple adapters for easy, accurate testing.

This compression tester kit is built for hobbyists and professional mechanics who need reliable, repeatable cylinder pressure readings across cars, motorcycles, ATVs and small engines. The kit combines a clear 0–300 PSI / 0–20 BAR dial, a pressure-retaining check valve, brass adapters for common spark plug sizes and several extension options to reach recessed wells. Everything packs into a rugged blow-molded case so you can carry the kit to the shop or keep it in your service vehicle.

How does the dual-scale gauge improve reading accuracy?

The large dial displays both PSI and BAR so you can read results in the unit your workflow requires. An acrylic cover and rubber protective boot reduce parallax and protect the face from impacts, while the internal construction maintains stable readings under vibration.

• Clear 0–300 PSI and 0–20 BAR markings for quick interpretation
• Acrylic glass cover for scratch-resistant visibility
• Rugged rubber boot absorbs shocks and prevents damage
• Built-in check valve holds peak pressure for accurate recording

Which engines and vehicles can I test with this kit?

This Prokomon kit is designed for petrol/gasoline engines only and fits most common spark plug threads and recessed wells. It includes both straight and bent aluminum rods, a flexible hose and five brass adapters to work on cars, motorcycles, ATVs, lawn equipment and other small gasoline engines.

• Adapters: M10, M12, M14, M16, M18 for broad compatibility
• Flexible extension hose and 200mm metal connector for deep wells
• Works with rotary and push-in adapters where applicable
• Not suitable for diesel engines — use only on petrol/gasoline engines

What problems can this tester help identify?

Compression readings indicate the mechanical condition of an engine's combustion chambers. Use this tool to spot common issues such as worn piston rings, leaking or burned valves, head gasket failure and heavy carbon buildup by comparing cylinder-to-cylinder pressure values.

• Detect low or uneven compression between cylinders
• Reveal leaking valves, damaged piston rings, or cracked heads
• Identify need for further tests like leak-down or head inspection
• Lock peak pressure with the check valve for consistent comparisons

How easy is it to set up and store the Prokomon kit?

The kit includes threaded brass adapters and multiple extension pieces that assemble quickly without special tools. After testing, each component nests in a custom foam layout inside the blow-molded carrying case to protect fittings and keep everything organized for the next job.

• Quick-connect fittings and threaded adapters speed setup
• Specially molded case keeps parts sorted and protected
• Compact layout fits in a toolbox or vehicle trunk for mobile use
• Durable materials designed for workshop environments

Who is this for? The Prokomon 11pcs Professional Engine Compression Tester Kit is ideal for DIY mechanics, mobile technicians and small shop owners who need a dependable, transportable compression gauge set. It suits anyone servicing gasoline engines who wants clear, repeatable pressure readings and a range of adapters to cover cars, bikes, ATVs and lawn equipment without buying multiple tools.