OTC Tools 5605-DG Deluxe Digital Compression Tester Kit with 12 Cylinder Memory

The OTC Tools 5605-DG Deluxe Digital Compression Tester Kit is a professional-grade diagnostic tool designed to determine the mechanical condition of engine cylinders across a wide range of applications. This comprehensive kit works on gasoline engines including domestic, import, motorcycle, marine, snowmobile, ATV, and small engines.

Digital Gauge Features:

• 2.5-inch backlit LCD display with rugged protective rubber boot for durability
• Measurement range of 3-300 PSI with multiple display options: PSI, kPa, bar, and kg/cm²
• Advanced memory function to measure, record, and playback compression readings for 1-12 cylinders
• Low power indicator and auto power-off function (requires 9V battery, not included)
• Quick disconnect coupler separates hose from gauge for convenient storage

Hose and Valve System:

• Extra-long 26-inch flex hose assembly allows easy viewing from cluttered engine compartments
• Push-button side release valve enables quick pressure relief for repeat testing
• Corrosion-resistant nickel-plated finish for long-lasting performance

Complete Adapter Set Includes:

• 12-inch flex 14mm standard reach adapter
• 12-inch flex 14mm long reach adapter
• 8-inch deep well 14mm adapter for recessed plug well style heads
• 5-inch flex Ford Triton 16mm adapter for engines with 16mm thread plugs
• 10mm, 12mm, and 18mm adapters for various applications
• Adapters work on both flat and tapered seat spark plugs

What's Included:

• Digital gauge head with protective boot
• 26-inch hose and release valve assembly
• Complete adapter set (seven adapters)
• Repair kit for maintenance
• Blow-molded carrying case with instructions for organized storage

Compression testing helps diagnose worn pistons and rings, cylinder wall damage, sticking or worn valves, bad head gaskets, and cylinder head issues—all common causes of driveability problems. The kit connects directly to spark plug holes for accurate cylinder-by-cylinder analysis.