Lincoln Service Parts 1 › Lincoln Electric 9SM17669-1 TACH SENSOR M17669-1 Lincoln Electric 9SM17669-1 TACH SENSOR M17669-1 Sale Price: $104.59 Original Price: $120.28 TACH SENSOR PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! TACH SENSOR PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1