Home / Recreation / Exercise Cycle Seat Knob 18079 Exercise Cycle Seat Knob 18079Price Not Available Price may not be up-to-date. Out of Stock View Product Part Number: 18079 Brand: NAUTILUS Seller: Sears PartsDirect Category: Recreation Possible Matches$10.46Gates-18079 Hose Description This seat knob (part number 18079) is for exercise cycles. Seat knob 18079 lets you adjust the position of the seat. Wear work gloves to protect your hands when installing this part.