A cracked, faded, or missing head block cover does more than look bad -- it exposes the internal arm hardware of your Solera Regal awning to road debris, UV, and water intrusion. Lippert part 643918 is the direct OEM replacement cover, snapping back into position to restore a clean finish and protect the pivot hardware at the head end of your awning arm.
The Solera Regal is one of Lippert's premium manual and automatic RV slide-topper and patio awning arm systems, found on a wide range of Class A motorhomes, fifth wheels, and travel trailers. The head block cover sits at the upper pivot point of each awning arm, concealing the mounting hardware and providing a finished appearance from the curb side of the coach.
Over time, these covers can crack from UV exposure, break during awning operation, or simply go missing after a hard trip. Because the cover is a structural-appearance component -- not a load-bearing one -- a like-for-like plastic replacement is all that's needed to get things back in order. Lippert's 643918 is molded to the original dimensions and clips into the original mounting points without modification.
Engineered specifically for Solera Regal arm assemblies. Uses the factory clip and screw pattern -- no drilling or adapters required.
Molded in white, UV-stabilized material to resist fading and cracking through seasons of sun and road exposure.
Shields the internal pivot pin and mounting hardware from moisture, road grime, and insects that can accelerate corrosion and binding.
At just 0.37 lbs, the cover adds negligible weight and does not affect awning balance or travel locks.
Lippert's Solera awning family includes several arm styles -- the standard Solera, the Solera Regal, and the Solera Power awning systems. The Regal arm is identifiable by its heavier-gauge extruded arm profile and more substantial head casting compared to the base Solera arm. If you are unsure which arm you have, measure the head block area and compare it to the dimensions of this cover: 10.82 in. long x 4.61 in. wide x 2.46 in. tall. A match on all three dimensions confirms this is the correct cover for your arm.
This cover applies to the head end (coach-side upper attachment point) of the arm assembly, not the foot end. If you need the lower foot block cover or the outer end cap, those are separate Lippert part numbers.
Installation is straightforward and requires only basic hand tools:
The Solera Regal awning arm system has been factory-installed on a broad range of coaches from Forest River, Coachmen, Keystone, and other manufacturers that source their awning hardware from Lippert. If your awning arm has a Lippert or Solera label and the arm profile matches the Regal series, this cover is the correct OEM replacement.