How to Understand & Use a Moen Faucet Aerator Assembly Diagram

Moen aerator assemblies are model-specific. Look for the model number on a tag under the sink or on the faucet base. You can then search for “Moen aerator assembly kit [your model number]” or call Moen’s customer support (1-800-289-6636)—they often send small parts for free.

Before reassembling, lay out your parts exactly like the diagram. Stack them in the correct order inside the housing, then screw the entire assembly back into the faucet spout. Hand-tighten, then give it a gentle 1/8 turn with a wrench—no tighter. Have a different Moen aerator style (like the “Microban” or “Laminar” flow)? The order stays the same, but the plastic inserts may look slightly different. When in doubt, draw your own diagram as you disassemble it.

If your Moen kitchen or bathroom faucet has low water pressure, a weird spray pattern, or is leaking at the spout tip, the aerator is likely the culprit. But before you can fix it, you need to understand its parts. This post breaks down the typical Moen aerator assembly diagram and explains each component.