Lincoln Service Parts 1 › Lincoln Electric 9SM21158 IDLER SOLENOID ASBLY M21158 Lincoln Electric 9SM21158 IDLER SOLENOID ASBLY M21158 Sale Price: $1,307.34 Original Price: $1,503.44 IDLER SOLENOID ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! IDLER SOLENOID ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1