Differential Cylinder Pressure Tester Model E2A

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Part# 12-01012
MFR Model# E2A


The Differential Cylinder Pressure Testers quickly locate worn and cracked rings, defective intake and exhaust valves, scored and cracked cylinders, leaky head gaskets, and worn and stripped spark plug bushings; virtually every potential cause of pressure loss.

Model E2A Tester, for cylinders of less than a 5.00 inch bore* with a .040 inch diameter orifice, that eliminates all guess-work by enabling you to determine the exact location and cause of your engine's efficiency loss. This tester is recommended by TCM per Service Bulletin SB03-3.

Model E2A includes:
  • Slow Fill ValveTM
  • Safely find TDC
  • Safely bleed cylinder test pressure to
    zero for testing multiple cylinders
  • No repeated pressure adjustments
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


  • Heavy Duty Regulator
  • Heavy Duty Gauges
  • All Connections Quick-Disconnect
  • 18 mm Plug Adapter
  • Extra Long High Pressure Hose
  • Complete instructions with each unit
  • (10/14 mm Adapter Available)
  • Accessories
  • Frequently Purchased With
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Please note,'s personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does the E2A differential tester come with a calibration certificate? If not can one be provided, and at what cost?

This does not come with a calibration certificate but does have a stamp stating that it is calibrated from the manufacturer.

Q: Is this differential cylinder pressure tester E2A manufactured by Eastern Technology?

Yes, this is manufactured by Eastern Technology.

Q: Do you sell the Mater Orifice that is needed to make this Model tester comply with the Service bulletin?

This unit is already compliant with Service Bulletin SB03-3.