GROCO Thru-Hull Installation Tool [THT-530] Brand_Forespar Performance Products ECU connector includes threaded collar

ECU connector includes threaded collar for compatibility with ECU 12 and SmartPump systems

Clear polycarbonate cover snaps on to meet Coast Guard and ABYC insulation requirements

Ideal for inshore or coastal fishing in shallow to medium depths

or even control the trolling motor

GROCO Thru-Hull Installation Tool [THT-530] Brand_Forespar Performance Products ECU connector includes threaded collarThru Hull Installation Tool Thru Hull Installation Tool The Concept: THT 530 makes the installation of standard GROCO thru hull fittings possible by a single installer. Slide the thru hull fitting, flanged end first, over the tool. (It will stop at the proper step.) Tie a length of monofilament to the eye and place it into the already cut hole in the hull of the boat. Apply caulking to the flange of the fitting, and pull the fitting through the hole