Air Injector Body, Balboa HydroAir

Marsoni

M251S

$11.50

Get it in 3 business days with 1 day shipping. Friday, May 29

Air Injector Body, Balboa HydroAirThis is the 31 9201WHT Air Injector Body by Balboa HydroAir, a crucial spa component. Ensure proper air flow and jet function with this genuine replacement part.

Easy Shipping

Quick Dispatch:

Your Air Injector Body, Balboa HydroAir orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Air Injector Body, Balboa HydroAir ships.

Need Help?
Questions about Air Injector Body, Balboa HydroAir, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Air Injector Body, Balboa HydroAir in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Great fit, and lot more more robust in build than the OEM filter it replaces. I've replaced the factory cabin air filters in at least 3 vehicles with these, when the time came to replace. Side note: This one went into a 2020 Lincoln Aviator and --consistent with my experience with previous Lincoln models -- the retaining tabs on the filter housing door snapped off when I was trying to remove it. Nothing to do with the K&N filter, but I just don't understand why Lincoln can't design a better housing door mechanism.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on September 16, 2025