Digital Compression Tester Kit

Digital Compression Tester Kit

The OTC 5606-DG Digital Compression Tester Kit helps determine the mechanical condition of the engines' cylinders. The digital gauge is easy to read and can display pressures in PSI, kPA, bar and kg/c. It also can measure, record and playback compression readings on up to 12 cylinders, for quicker testing and diagnosis. Specialized adapters work on both flat and tapered seat plugs. A convenient push-button side release valve relieves pressure for repeat testing. 

The kit includes standard and specialty adapters, stored in a blow-molded case to organize all adapters and protect the digital gauge head. Works on gasoline engines including domestic, import, motorcycle, marine, snowmobile, ATV's, and small engines.

Compression testing is accomplished by connecting the compression tester to the spark plug hole. Bad compression readings can mean worn piston/rings or cylinder walls, worn or sticking valves, and bad head gaskets or cylinder heads, all of which can cause driveability issues. 

Digital gauge powered by 9V battery, not included. 

Functions and Features:

  • Corrosion resistant nickel plated finish.
  • Adapters work on both flat and tapered seat plugs.
  • Extra long 26" flex hose gauge assembly with quick coupler, allows easy viewing out of cluttered engine compartment.
  • 2-1/2" digital gauge features a backlit LCD and rugged protective outer boot.
  • Measurement range of 3-300 PSI and 0-2100 kPa. Also displays in bar and kg/c

The Tabs

This product can expose you to chemicals including Lead and lead compounds, which is known to the State of California to cause cancer, and Lead and lead compounds, which is known to the State of California to cause birth defects or other reproductive harm. For more information for to
Specialty Tools
Digital gauge head with boot
26" hose and release valve
12" flex 14mm standard reach
12" flex 14mm long reach
10mm, 12mm, and 18mm threaded adapters
repair kit
carry case with instructions
Measure, record, and playback compression readings on 1 to 12 cylinders.
The 2-1/2" gauge features a backlit LCD display and rugged protective rubber boot.
Measurement range is 3-300 psi, can also be displayed in bar, kPa, and kg/c units of measure.
Powered by a 9V battery with low power indicator and auto power off.
Quick disconnect coupler separate hose from gauge.
Push button side release valve allowing repeat testing.
Adapters work on both flat and tapered seat plugs.
Product Dimensions: 
15 × 9.9 × 3.7 in
Product Weight: 
3.5 lb
Shipping Weight: 
3.5 lb
Instock Notification: