Our Part# SMT010 OEM# SMQ40049-002 or 40049-002
Motor, 510, 612 200v refurb
This part can be used on the following model(s):
Stairmaster - 510_Plus (448 - 458 - 501 - 503)
Stairmaster - 612_Plus (456 - 457 - 502 - 504)