It's commonly used in heating, cooling, and ventilation systems in vehicles. Hot coolant from the engine block passes through the heater, warming up the intake air blown on its surface by the interior blower.
HEATER MATRIX C2Z23419 FITS JAGUAR E PACE HEATER MATRIX CORE NISSENS OEM
Heater Matrix 73641 Nissens Exchanger Interior 9171503
Land Rover Discovery 3 Heater Matrix GENUINE NISSENS Brand 04-09 LR017030
Heater Matrix 73943 Nissens Exchanger Interior 5Q0819031A
Heater Matrix 707278 Nissens Exchanger Interior 5WA819031
NISSENS Interior Heater Matrix 71453 for FIAT 500 (2008) 1.2 etc