Image 1 of 1 E-4 Marine Engine Pencil Anode $10.50 Thread: 1/2-13, Length (IN): 3 3/8, Diam. (IN): 3/4, Plug N.P.T. (IN): 3/4, (Caja Varios) Add To Cart Added! Thread: 1/2-13, Length (IN): 3 3/8, Diam. (IN): 3/4, Plug N.P.T. (IN): 3/4, (Caja Varios) You Might Also Like Quick View E-2C Marine Engine Pencil Anode, Complete With End Brass Plug $31.33 Quick View E-2A Marine Engine Pencil Anode, Complete With End Brass Plug $28.02 Quick View P-1 Propeller Nut Anode $20.87 Quick View R-3 RUDDER ZINC 3 3/4" $26.50 Quick View P-7 Propeller Nut Anode $26.78