Field Coil - Royal 618/680 Prima Air leaks past the loose

Air leaks past the loose cover instead of pulling through the floor head

The Koblenz bellows (Part #12-0645-7) is a replacement air passage component for Koblenz U310 bag and dirt cup models

Verify compatibility with your specific model before ordering

where protecting the surface matters as much as picking up the dust

Loose dry debris coats the inside of a drum and clogs filters quickly

Field Coil - Royal 618/680 Prima Air leaks past the looseThis replacement field coil fits the Royal 618 and 680 and is a core motor component that generates the electromagnetic field the motor needs to turn. It works with the armature to convert electrical current into the rotation that drives suction. A failing field coil can leave the motor running weakly, overheating, or refusing to reach full speed, and a burning smell often points straight to it. Fitting the correct coil restores full motor output and