Mercury Outboard 27-22851 Gasket Fuel Filler Cap To Tank Mark 30H Mark 55H WH6A Steering Helm Parts From my research it seems

From my research it seems that this might be compatible with other Yamaha 4hp 4-stroke outboards 1999-2008 & newer (and maybe even older stuff as Yamaha had a very inconsistent parts numbering system)

Worm Wheel  0910354 / 910354

produced by us

Stamped 571504AA but should be the same as those stamped 571504A

Piston (Standard / Stock Size Bore): Part Number 389115 / 0389115 (Stamped Casting P/N is 323604)

Mercury Outboard 27-22851 Gasket Fuel Filler Cap To Tank Mark 30H Mark 55H WH6A Steering Helm Parts From my research it seemsItem Description Mercury Part Number 27 22851 Gasket Fuel Tank Found on Mercury Mark 30H 55H & Wizard WH6 WH6A If you are unsure on compatibility feel free to ask! Purchase with confidence! General Disclaimer (please read) These are New Old Stock Parts from a large mercury Mark & K models cabinet I have. Some of these parts might work on more models than listed in the title and or the description, Please do your own research There might be some