Yonligonju Diesel Compression Tester Kit 17pc (Red) — 80mm Dual-Range Gauge, Quick-Connect

Yonligonju 17pc Diesel Compression Tester Kit is a complete professional toolset for quickly and safely measuring diesel cylinder compression, delivering clear dual-scale readings and tool-free connections.

This 17-piece diesel compression tester set combines a large 80mm dual-range gauge, quick-connect adapters, a high-pressure flexible hose, and an integrated safety relief valve so you can diagnose cylinder pressure issues on trucks, generators, ships, and heavy machinery with confidence. The kit is built for repeated shop use—oil-resistant materials, a bendable 355mm hose, and a compact case make it practical for mobile technicians and DIYers alike.

How does this kit make compression testing faster and easier?

The Yonligonju kit uses an innovative quick-connect adapter system that eliminates threaded fittings and reduces setup time. A range of adapter sizes lets you attach directly to many injector or glow-plug ports so testing proceeds with minimal disassembly.

• Tool-free quick-connect adapters for rapid attachment and removal
• Multiple adapter sizes to fit diverse diesel engines and ports
• Compact carry case keeps parts organized for quick access

What safety features protect me and the equipment during testing?

An independent pressure relief valve prevents gauge overload by venting excess pressure automatically if readings exceed safe limits. The gauge and hose are engineered for high-pressure use, and the relief device reduces risk from operator error or unexpected high compression events.

• Built-in automatic pressure relief valve for overpressure protection
• High-elasticity, oil-resistant hose rated for diesel testing environments
• Large-diameter dial reduces misreads that can lead to repeated tests

What readings and accuracy can I expect from the gauge?

The 80mm dial offers dual-range scales: 0–1000 psi and 0–70 bar, making it simple to read in either imperial or metric systems. The large face improves visibility in garages or field settings so you can compare cylinder-to-cylinder results quickly.

• Clear 80mm face with dual psi/bar scales for universal readability
• Suitable for comparing cylinder pressure across engines and maintenance intervals
• Durable construction for repeated use under workshop conditions

Which engines and situations is this kit compatible with?

The set is designed as a universal diesel compression testing solution, working with passenger diesel cars, light and heavy trucks, marine engines, generators, and construction machinery. The flexible hose and multiple adapters make it useful where access is tight or ports are recessed.

• Works with a wide variety of diesel-powered equipment—automotive, marine, and industrial
• Flexible 355mm hose reaches confined engine bays and recessed ports
• Portable, lightweight design for on-site diagnostics and fleet maintenance

Who is this for: The Yonligonju 17pc Diesel Compression Tester Kit is aimed at professional mechanics, fleet maintenance technicians, and skilled DIY diesel owners who need reliable, repeatable cylinder pressure readings. If you perform routine diesel diagnostics, troubleshoot power loss or uneven compression, or maintain heavy equipment and generators, this kit gives a practical balance of safety, accuracy, and portability without expensive shop-only tools.