Review on 🔍 Cummins Onan 1403280 Air Filter by Rob Marsh

Ideal for Spec K or S QG Microquiet. When replacing, make sure the filter is secure and fully tightened. I've had several Microquiets in the past and one came from the factory with a rubber bumper (the orange rubber ring that fits between the filter and the filter holder) that was too thick. Over time, the vibration from the loose seat would cause the body to fatigue and separate from the carburetor mount. Replacing it (like any Micro Quantum service) is very difficult and I didn't understand why it broke until I repaired it and replaced the oversized shock with the old one I had.