Camco 40310, Magnetic RV Bumper Cap

Camco 40310 is a magnetic RV bumper cap that secures and simplifies removal of your bayonet-style sewer hose while keeping pests out and providing airflow.

Designed for owners of motorhomes, travel trailers and fifth-wheels that use 4-inch square metal bumpers and Camco bayonet-style sewer fittings, this bumper cap combines strong neodymium magnets with a bayonet-friendly lug pattern. It prevents the sewer hose end from slipping into the bumper cavity, gives you a convenient grab point to pull the hose free, and includes small airflow vent holes that act as an insect screen. A bonus no-insect bumper cap is also included for tighter protection when needed.

How does the magnetic attachment keep the sewer hose cap secure?

The Camco 40310 uses high-strength neodymium magnets embedded in the cap to cling firmly to most metal 4-inch square bumpers. This magnetic hold reduces rattling, prevents the hose from sliding deeper into the bumper opening, and gives you a stable anchor point when removing the hose.

• High-strength neodymium magnets for reliable attachment to metal bumpers
• Designed for most standard 4-inch square bumper openings
• Less hose movement and noise while towing or parked

Will this fit my RV sewer hose and bumper?

The cap’s lug layout matches Camco bayonet-style sewer hose fittings, so it directly accepts bayonet ends for a secure connection. It’s intended for use on most metal 4" square bumpers; plastic or nonmetallic bumpers may not provide a magnetic hold.

• Lugs are compatible with Camco bayonet-style sewer hose ends
• Works best on metal bumpers that are standard 4 inches square
• If your bumper is nonmetallic, the magnetic feature will not engage

How do the vent holes and bonus no-insect cap help during storage?

Small vent holes in the cap allow airflow into the bumper cavity to discourage stagnant moisture while doubling as a screen against insects. The included no-insect bumper cap provides an alternative with tighter protection to block critters when airflow is less important.

• Vent holes promote airflow and reduce trapped moisture buildup
• Vent openings act as a first-line insect barrier
• Bonus no-insect cap gives extra protection against bugs and pests

How does this cap make removing the sewer hose easier?

Instead of reaching into the bumper cavity or fishing for the hose, the bayonet end locks onto the cap so you can simply pull the hose out by the attached cap. That saves time and reduces bending or awkward reaching behind the RV.

• Bayonet lock design lets you pull the hose free without reaching into the bumper
• Provides a convenient external grab point for quick removal
• Reduces risk of losing or dropping the hose inside the bumper cavity

Who is this for: RV owners who use Camco bayonet-style sewer hoses and have a metal 4" square bumper will get the most benefit from the Camco 40310 Magnetic RV Bumper Cap. It’s useful for frequent campers who want a tidy, low-effort way to store and retrieve their sewer hose, for travelers who want to minimize noise and hose movement during transit, and for anyone seeking basic insect protection and airflow in the bumper cavity. If your bumper is nonmetallic or uses a non-bayonet sewer fitting, verify compatibility before purchase.