Home / Recreation / Treadmill Frame Cover 8004900 Treadmill Frame Cover 8004900Price Not Available Price may not be up-to-date. Out of Stock View Product Part Number: 8004900 Brand: NAUTILUS Seller: Sears PartsDirect Category: Recreation Description This frame cover (part number 8004900) is for treadmills. Frame cover 8004900 fits over and covers the treadmill frame. Unplug the treadmill before installing this part. Wear work gloves to protect your hands.