Compression Tester Kit for Petrol Engines 65mm Gauge 14/18mm

A compression tester kit for petrol engines used to check cylinder pressure before stripping parts off or chasing faults unnecessarily. The large 65mm gauge gives clear, easy-to-read results, making it a practical choice when you need a quick view of engine condition.

Used for fault finding on cars, motorcycles and other petrol engines, this kit helps when dealing with poor starting, uneven running or loss of power. In a garage, workshop or home maintenance setting, it gives you a straightforward way to compare compression between cylinders and spot whether an engine is building pressure as it should. That makes it useful for servicing, diagnosing running issues and checking engine condition before repair work goes further.

The kit includes both a 150mm rigid stem with cone-type adaptor and a 320mm flexible adaptor with 14mm and 18mm screw-in adaptors, giving you options depending on access and engine layout. The gauge is marked across four scales - psi, bar, kg/cm² and kPa - with readings up to 300psi, 21 bar, 21 kg/cm² and 2100 kPa. A quick coupling is included, along with instructions, so the kit is ready for regular workshop or DIY diagnostic use. Having both rigid and flexible connections helps cover common petrol engine testing jobs without needing separate pieces.

Compression tester kit specifications

• Gauge size: 65mm diameter gauge for clearer readings during testing.
• Reading scales: Marked in psi, bar, kg/cm² and kPa.
• Range: Measures from 0-300psi, 0-21 bar, 0-21 kg/cm² and 0-2100 kPa.
• Contents: Includes quick coupling, rigid stem, cone adaptor, flexible adaptor, 14mm and 18mm screw-in adaptors, plus instructions.
• Access options: 150mm rigid stem and 320mm flexible adaptor help when engine access is awkward.
• Number of pieces: 3-piece kit.
• Case: Supplied with a case.

A practical choice for regular petrol engine fault finding and maintenance work.