Keep your Happijac screw jack system operating smoothly with this direct-replacement hex drive adapter from Lippert. Designed specifically for Happijac-brand camper jacks, this compact, corrosion-resistant adapter restores proper function to lifting and lowering your truck camper -- without the cost or hassle of replacing the entire jack assembly.
Happijac camper jack systems are a popular choice for truck camper owners who need reliable, motorized lifting and lowering of their camper body. Over time, the hex drive adapter -- the component that transfers rotational force from the motor or drill drive to the jack screw -- can wear, strip, or corrode, especially in high-use or outdoor-storage scenarios.
Lippert part 182912 is the factory-spec replacement adapter, purpose-built for Happijac screw jack systems. At just 0.2 lbs, it installs quickly and restores full drive engagement without any modification to your existing jack hardware.
Engineered specifically for Happijac screw jack systems for a drop-in replacement with no drilling or modification required.
Built to withstand outdoor exposure, road spray, and the harsh undercarriage environment typical of truck camper use.
Weighs only 0.2 lbs, keeping your jack assembly light without sacrificing drive strength or durability.
Backed by Lippert's limited 1-year manufacturer warranty for peace of mind on every replacement part purchase.
Happijac jacks are screw-type camper jacks designed for raising and lowering truck campers. They can be operated by a dedicated motor or driven manually with a power drill using the hex drive interface. The hex drive adapter is the mechanical link between the drive source and the lifting screw -- making it a critical wear item in any active jack system.