Kuuma 11812 6 Gallon Water Heater - 120V Rear Heat Exchanger, L1&N Wiring coffee mug 5″ NPT port and (1)

5″ NPT port and (1) 1/2″ NPT ports on driver side

Stainless steel hardware

With all of these features

then the XL-R rock guard is your answer

Shurflo by Pentair 105-013 SLV Fresh Water Pump - 12 VDC

Kuuma 11812 6 Gallon Water Heater - 120V Rear Heat Exchanger, L1&N Wiring coffee mug 5″ NPT port and (1)Kuuma's 6 Gallon Marine Water Heater provides your boat with an ample supply of hot water. This 6 gallon capacity premium water heater has an electrical input of 120V 60Hz 1500W. It includes a rear heat exchanger and front to rear mounting brackets. It features an L1&N wiring configuration and a T&P valve type of 150 psi & 210F. This aluminum water heater measures 13 inches (W) x 13 5 8 inches (H) x 19 inches (D) overall. Listed per UL 174 and CAN CSA