Black streaks on your RV sidewalls are almost always caused by rain runoff dripping straight off short or worn factory gutter spouts. Camco's 42134 gutter spout extensions slide onto existing gutters -- or mount directly to rigs without gutters -- and push water 2 full inches further away from your exterior, keeping sidewalls, doors, windows, and decals clean and dry without any tools or drilling.
Factory gutter spouts are notoriously short. Rain water barely clears the roofline before it runs straight down your sidewall, leaving the dark vertical streaks that are the universal sign of a neglected exterior. Camco's slide-on extensions are the simplest fix available -- no tools, no adhesive, no drilling.
Each extension adds 2 inches of horizontal reach to your existing spout, directing water away from the sidewall break point where streaking originates. The set of four covers both front corners and both rear corners of a typical Class A, Class C, fifth wheel, or travel trailer roofline.
No tools required. Extensions slide firmly over existing OEM or aftermarket gutter spouts and stay in place through highway driving and vibration.
Pushes runoff 2 inches further from your sidewall -- enough to clear the typical drip zone and eliminate the primary cause of black streak staining.
Molded from weather-resistant polypropylene that holds up to sun, rain, and road vibration without cracking, warping, or fading over multiple seasons.
The 4-pack contains 2 left-handed and 2 right-handed spouts, so one kit handles the full roofline of most RVs with no need to order separately.
These extensions are designed to slip over current OEM gutter spouts as an upgrade, but they can also be used on RVs that lack factory gutters, providing a functional drip diverter where none existed before.
The 1-1/16-inch inner diameter opening fits the standard spout diameter found on the vast majority of Class A motorhomes, Class C motorhomes, fifth wheels, and travel trailers from brands including Forest River, Coachmen, Keystone, Jayco, Fleetwood, Winnebago, and others. If your existing spout is worn, cracked, or missing entirely, these extensions also serve as direct replacements.
If your RV has a dark or black exterior trim, the same spout design is available in black as Camco part 42452 -- search "Camco 42452" on this site to locate the matching listing.
Black streaks on RV sidewalls are caused by a combination of dirt, oxidized rubber, and mildew that rainwater picks up as it runs off the roof and slides down the exterior. Once the staining chemistry gets established, cleaning requires aggressive compound or dedicated black-streak remover applied repeatedly. Redirecting the water at the source -- the gutter spout -- is the only permanent fix. These extensions cost a fraction of a single professional exterior detail and install in minutes.