Seachoice Deck Fill Cap Only 1-1/2" Black 50-32501 by Seachoice $12.89 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Seachoice Deck Fill Cap Only #50-32501 SIZE: 1-1/2" Black Nylon Replacement cap for gas, water, waste and diesel deck fill plates. Replacement cap for 3201 Nylon(Fits Perko 1313 & 1314 series)