Heavy-Duty Diesel Heater Coupler — Magnetic Quick-Connect with Weather Cap
Upgrade your diesel heater ductwork with a dependable, high-performance coupling specially engineered for RVs, campervans, boats, cabins, and mobile setups. This heavy-duty coupler delivers reliable airflow and sealing in demanding conditions.
🔧 Product Details & Specs
Duct Interface: The internal tubular section is sized to accept 75 mm (3 in) duct hoses as standard.
Recessed Hose Coupler Groove: Built-in recess allows a 15 mm wide hose clamp (or coupler band) to seat securely inside, locking the duct hose in place permanently.
Magnetic Quick-Connect System: 20 embedded high-strength magnets (10 per half) provide a fast, tool-free connection that holds firmly even under vibration.
Quick Connect Convenience: Ideal for modular, portable, or mobile heating systems—dismantle and reconnect the duct in seconds.
O-Ring Sealing & Weather Cap: Each coupling half is fitted with an O-ring seal to prevent air leakage. The included weather-sealed cap protects the open end from dust, moisture, and debris when disconnected.
Materials & Durability: Designed for high-temperature and repeated use; compatible with diesel heater exhaust heat loads and ideal for marine or RV environments.
✅ Key Benefits & Use Cases
Leak-free ducting: The O-ring seal and magnetic interface reduce air loss, improving overall heater efficiency.
Secure hose retention: The internal clamp recess ensures your duct hoses stay firmly in place without slipping.
Fast modular connection: Great for users who frequently reconfigure layouts—connect/disconnect in seconds without tools.
Weather protection: The magnetic cap shields your duct end when disconnected, preventing ingress of dirt or moisture.
Versatile compatibility: Works seamlessly with Webasto, Planar, Eberspächer, Chinese diesel heaters, and other warm air systems.
Mobile & off-grid applications: Perfect for vanlife builds, overland rigs, marine cabins, portable heating modules, and winter retrofit kits.
📦 What’s Included
Two coupling halves (male/female) with magnetic alignment
O-rings already installed
One weather-resistant magnetic cap
(Optional) mounting flanges or screw-through boss features depending on variant
💡 Pro Tips & Installation Notes
Clamp sizing — Use a 15 mm wide hose clamp inside the recess to securely mount duct hoses to the coupling.
Orientation — Align coupling halves so magnets seat fully before press-fitting together for best seal.
Cap use — Always attach the weather cap when the system is offline to keep contaminants out.
Regular inspection — Check O-ring condition and magnetic seating periodically, especially in extreme temperature cycles.
Application fit — Matches standard 75 mm ducts used in 2 kW–8 kW diesel heater systems.
