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Camco 37221 RV Recessed Water Fill Replacement - White Plastic Female Thread Inlet

Camco 37221 RV Recessed Water Fill Replacement in white plastic with female thread outlet for fresh water systems
Camco RV Recessed Water Fill Replacement
 
List Price: $12.99
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Part Number: 37221
Manufacturer: Camco

Quantity in Stock :1

Availability: In Stock
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CamcoOEM-Style Replacement90-Day WarrantyCamco 37221 RV Recessed Water Fill Replacement

A cracked or seized water fill inlet is a quick fix -- if you have the right part on hand. The Camco 37221 is a direct OEM-style replacement for the recessed fresh water fill found on a wide range of RVs, travel trailers, and fifth wheels. White UV-resistant plastic means no rust, no corrosion, and a clean match to most factory exterior panels.

Stop a Cracked Water Fill From Becoming a Bigger Problem

The recessed water fill is one of the most-handled fittings on your RV. Every time you connect a hose at a campground hookup or fill your fresh tank before a dry-camping trip, that fitting takes mechanical stress. Over time, the plastic housing cracks, the threads strip, or the cap hinge breaks -- and water starts finding its way where it should not go.

The Camco 37221 replaces the entire recessed fill housing with an OEM-style unit built from the same durable white plastic used in the original. Installation is straightforward: remove the screws holding the old housing to the sidewall, disconnect the interior plumbing from the female-threaded outlet, and reverse the process with the new unit. No special tools, no tank draining required in most cases.

Rust-Proof Plastic Housing

White UV-stabilized plastic construction will not rust, corrode, or pit -- even after years of campground hose hookups.

Female Thread Outlet

Standard female threads on the interior outlet connect directly to common RV fresh water plumbing lines and fittings.

Recessed Flush-Mount Design

Recessed profile sits flush with the RV sidewall, protecting the inlet from road debris and maintaining a clean exterior appearance.

OEM-Style Replacement

Designed as a like-for-like replacement for factory-installed Camco-sourced water fills found on many production RVs.

What Is Included

  • 1x Camco 37221 recessed water fill housing (white)
  • Cap and hinge assembly (integrated)
Fresh Water System Compatible: This fitting is intended for use on potable fresh water fill lines only. The white color and plastic materials are appropriate for drinking water contact.

Common Replacement Scenarios

This part is most often needed when:

  • The housing has cracked due to impact or freeze damage
  • The female threads are stripped and will no longer hold a hose fitting securely
  • The cap hinge has broken and the fill is left exposed
  • The original fill was lost or damaged during a sidewall repair or re-skin
Installation Note: Before ordering, confirm your existing fill housing uses a standard recessed mounting pattern and female interior threads. Some RV manufacturers use proprietary city water inlet housings that differ from the fresh water fill -- verify which fitting type you are replacing.
Heads-Up: If your current fill inlet leaks at the interior connection rather than at the housing itself, inspect the interior elbow or barb fitting before replacing the housing -- the issue may be downstream of this part.
Maintenance Tip: After installation, apply a small amount of plumber's grease to the cap hinge and thread area once per season to extend the service life of the new housing.

Product Specifications

ManufacturerCamco
Part Number37221
SKU / MPN93-9124
UPC014717372213

Physical Specifications

ColorWhite
MaterialUV-stabilized plastic
Mount StyleRecessed flush-mount
Outlet ConnectionFemale threads (interior side)

Usage Details

ApplicationRV fresh water fill system
Replacement TypeOEM-style housing replacement
Sold AsQuantity of 1
WarrantyLimited 90-day manufacturer warranty

Compatibility Notes

Compatible SystemsPotable fresh water fill lines on travel trailers, fifth wheels, and motorhomes using recessed fill housings
Not For Use WithCity water pressure inlet (different fitting type)
Important Information
  • This part replaces the recessed FRESH WATER fill housing -- it is not a city water inlet or pressure regulator inlet.
  • Verify your existing housing uses female interior threads before ordering; mismatched thread types will require additional adapters.
  • Do not use this fitting on gray water, black water, or any non-potable line.
  • If the exterior RV sidewall around the old fitting is damaged or soft, address the substrate before installing the replacement housing.
  • The 90-day warranty covers manufacturing defects; physical damage from impact or improper installation is not covered.


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