This MerCruiser engine coupler part is a must-have for any boating enthusiast looking to keep their boat running smoothly. Made in the United States, this coupler is designed for use with 3.7L engines. With a focus on quality and durability, this coupler is a great addition to any boat engine. It comes with no warranty, but its brand name alone speaks to the high level of performance you can expect. Don't miss out on this essential part for your boat.