Aircraft Tool Supply 2EM Pro Differential Pressure Tester Kit
with Spark Plug Port Extension Tool

Model 2EM Differential Cylinder Pressure Tester

The Model 2EM Differential Cylinder Pressure Tester combines the features of our popular 2E tester, and a Master Orifice into one tool. Now you can conveniently check your engine’s leakdown rate against a calibrated standard in accordance with Continental’s Service Bulletin SB03-3. Includes 18MM Spark Plug Adapter, 24" pressure hose, and complete instructions. Factory calibrated.

NOTE: The ATS 2EM Differential Pressure Tester has a .040” orifice as required by Teledyne Continental SB03-3 Service Bulletin, and is the proper type of instrument to test ALL Teledyne Continental engines in accordance with the aforementioned bulletin. The ATS 2EM also complies Textron Lycoming SI-1191A Service Instruction and is appropriate for ALL Textron Lycoming engines as indicated in the Service Instruction. For all other makes of engines, consult FAA AC43.13 REV 1B for guidance in selecting the proper instrument for your engine.

Compression Tester Extension

If you sometimes have trouble getting to the spark plug port for compression testing due to distance or obstructions, then the Compression Tester Extension may be just what you need. It's a replacement plug adapter with an 8-1/2" reach to work around manifolds, baffiling, harnesses, support structures, and anything else that gets in your way. The T-handle lets you to screw and unscrew the extender into the port without a wrench. And finally, the quick connect coupler makes it as snap to hookup and disconnect your tester.

• 18MM aviation engine plug threads
• 8-1/2" long to clear obstacles
• Quick connect air coupler
• O-ring seal to protect spark plug port
• Painted safety yellow for high visibility