THIS IS A D&D 640 CC CYLINDER I REMOVED FROM MY 2003 440 SNO PRO WITH A 640 D+D MOD MOTOR. IT WAS SENT TO MILLENIUM TECH TO BE REFURBASHED AND IS LIKE NEW. IT WOULD FIT A 440 OR F5 LAYDOWN MOTOR WITH POWERVALVES. IT SHOULD WORK GREAT ON A 440 OR F-5. THESE ARE GETTING HARD TO FIND AND D+D QUOTED ME $700 FOR ONE WITH A UNKNOWN AMOUNT OF WAIT TIME. IT IS BEING SOLD AS IS WITH NO WARRINTEES. I HAVE ALL THE OTHER PARTS FROM THIS MOTOR SO ASK IF YOU NEED ANYTHING ELSE.

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