Core - LHD/RHD Heater for Defender (2007 >) LHD/RHD – DA3860

Thomas Performance Ltd Verified independent store

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The DA3860 is a heater core replacement unit for the Land Rover Defender, responsible for transferring engine coolant heat into the cabin via the heater matrix circuit. A failing h eater core typically presents as reduced cabin heat output, coolant leaks onto the passenger footwell floor, or a sweet smell of antifreeze inside the vehicle. Correct replacement restores full heating performance and prevents coolant loss that can lead to engine overheating. Key Features Direct replacement heater core designed to match original matrix dimensions and coolant port positions Compatible with both left-hand drive (LHD) and right-hand drive (RHD) Defender configurations Meets original equipment specification for the post-2007 Defender heater system When replacing the heater core, inspect heater hoses, hose clips, and the heater control valve for wear or leaks before refitting Vehicle Fitment Fits Land Rover Defender (2007 onwards), both LHD and RHD variants, covering the cooling and climate control system across all engines produced during this period. Not sure about fitment? Feel free to get in touch at [email protected] Show more