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Aircraft Spruce & Specialty Co.
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Wasilla, AK | Peachtree City, GA
Brantford, ON Canada
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PISTON STOP FOR E25
MFR Model# E25-9
Hardened aluminum piston stop for the E25-9 timing indicator.
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Q: Regarding Part # 12-18100: I use UREM38E spark plugs and would like to know if the following part number will fit my 5/8 slot in order to find my number 1 cylinder top dead center?
This piston stop is the same thread, 18MM, as a Champion or Tempest plug that goes in the cylinder. We have added the E-25 user manual to the "Documents" tab of the web page should you need to reference it.
Q: Is this piston stop pin universal for ALL Lycoming and Continental cylinders? Will this stop contact TDC on all cylinders accurately?
Per the manufacturer: Yes the piston stop can be used for all engines with 18mm spark plug hole. Yes it will allow you to find TDC accurately.