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4-Stroke Leak Down Tester

  • Designed to check the amount of cylinder leakage in a 4-stroke engine
  • With an air source of 70 to 160 psi. this system will pressurize the cylinder with 60 psi. of air
  • Gauge will register the total percentage of leakage past the rings, head gasket, intake and exhaust valves
  • 10, 12, & 14mm spark plug thread hoses, regulator and gauge included
  • Speeds up troubleshooting & helps to isolate bad components
  • Made with high quality regulator and gauge. These cost more, but you get a better tool
  • Includes convenient carrying box
  • Instructions included
  • Replaces H-D® tool #HD-35667-A
4-Stroke Leak Down Tester
Part # 08-0126


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Accessories and Related Items

Spark Plug Socket, 14mm 08-0512
Spark Plug Socket, 14mm
Spark Plug Socket/Extension 5/8" 08-0239
Spark Plug Socket/Extension 5/8"
Spark Plug Socket 18mm 08-0175
Spark Plug Socket 18mm

Replacement Products

Hose Assembly 10mm 08-126X
Hose Assembly 10mm
Hose Assembly 12mm 08-126Y
Hose Assembly 12mm
Hose Assembly 14mm 08-126Z
Hose Assembly 14mm
Gauge, Pressure Test C08-126A
Gauge, Pressure Test

How To / Leak Down Testing


  4-Stroke Leak Down Tester, 08-0126  147 KB .pdf file

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