scottchen PRO RV Bumper Caps for 4" Square Bumpers — 2-Pack Metal End Caps with Locking Pin & Vents

scottchen PRO RV Bumper Caps are heavy‑duty metal end caps that seal and ventilate standard 4‑inch square travel trailer bumpers while locking securely in place.

Replace brittle plastic bumper plugs with a tougher metal solution designed for storing sewer hoses and long gear inside your trailer's rear bumper. These caps pair a locking pin and set screw with stainless steel chain retention and airflow holes, so stored items stay put, dry faster, and debris is kept out. Each kit contains two metal end caps and the mounting hardware needed for a straightforward swap on most 4" square bumpers.

How do these bumper caps keep my sewer hose storage secure on the road?

The caps use a two‑point retention system: a threaded set screw holds the cap tightly in the bumper square while a removable locking pin prevents accidental removal from vibration. This combination reduces the chance of caps loosening on rough surfaces and keeps stored hoses contained.

• Set screw tightens the cap inside the 4" square tube for a snug fit
• Locking pin provides a positive mechanical lock against vibration
• Stainless chain keeps the pin attached so it won’t get lost

Will these fit my travel trailer or camper bumper?

They are engineered for standard 4‑inch square bumper tubes used on most travel trailers, campers, and RVs. Installation is simple: slide the cap into the tube, align, tighten the set screw, and insert the locking pin for added security.

• Designed for standard 4" square bumper openings
• Includes hardware for quick, no‑specialty installation
• Works as an upgrade or replacement for worn plastic plugs

How do the ventilation holes help stored items?

Built‑in airflow slots allow trapped moisture to escape and promote faster drying of stored hoses and similar equipment. The venting also discourages mildew and reduces lingering odors compared with fully sealed caps, while blocking large debris from entering the bumper cavity.

• Multiple vents encourage airflow and faster drying
• Design keeps out leaves, dirt, and insects
• Reduces moisture buildup that can damage hoses over time

What makes the metal construction better than plastic plugs?

These scottchen PRO caps are forged from heavy‑duty iron rather than brittle plastic, so they resist cracking, breaking, and warping under temperature swings or impact. Metal durability translates to longer service life and fewer replacements, especially for frequent travelers and off‑road use.

• Iron construction withstands road shock and weather extremes
• Less likely to crack or deform than plastic alternatives
• Built to last — ideal for repeat installations and heavy use

Who is this for: scottchen PRO RV Bumper Caps suit RV owners, travel trailer enthusiasts, and campers who want a more reliable solution for storing sewer hoses and long gear inside rear bumpers. If you haul your rig often, drive on uneven roads, or simply prefer a durable, vented metal cap over fragile plastic, this two‑pack with hardware offers a practical, long‑lasting upgrade.