Hydrasearch manufactures a full line of transmission couplers for most marine transmissions. Our couplers are cast from ductile iron and machined to SAE J755 specifications. Most of our couplers are machined with our universal bolthole pattern and are supplied with mounting hardware. We also offer custom machining for any couplers we do not standardly produce. We carry an extensive inventory in order to better supply our distributor’s and OEM’s demands.