Replacement tube and fin heater core for 300H and 400H hydronic heater 5/8" hose barb.
Replaces 300(3 Vent), 340(4 Vent), 360(6 Vent), 400(Grill) Sport, Pro and Elite systems
Core Replacement Only
Dimensions: Width 6.5", Length 16" , Depth including pipes 4''.
OEM Heater system used in Malibu Boats, Axis, Mastercraft, Supra, Moomba, Centurion, and many other boat manufactures
PLEASE NOTE: This updated style heatercore DOES NOT fit in the older style heater Craft box. If system is older than 2002 you will need a Marine Heater 300 Unit Only (Sport, Pro, Elite). NEW CORE, BLOWER, and BOX.