Straight Coupler 3/4 Smooth

The Unisteer Perf Products Straight Coupler 3/4 Smooth (Part No. 546280) is a weld-on steering shaft coupler engineered for 220 and 360 watt Electra-Steer power steering units commonly found in modern recreational and performance boats. This steel coupler connects an 11/16-inch 36-spline drive shaft to a 3/4-inch smooth output shaft, providing the rigid mechanical interface required for reliable power steering response under the vibration and stress of extended on-water operation.

Constructed from steel in natural finish, this coupling weighs 0.39 lbs and measures 2.3 x 1.6 x 4.85 inches, making it a direct replacement for OEM Electra-Steer systems on compatible vessel platforms. The weld-on design ensures maximum strength at the connection point, eliminating the risk of slippage under load—a critical consideration in marine environments where steering precision directly impacts vessel control and operator safety. The 3/4-inch smooth bore accommodates standard shaft diameters without requiring specialized adapters.

This coupler is purpose-built for boat owners and marine technicians restoring or servicing 220/360-watt Electra-Steer installations. Whether you're performing routine maintenance on a fishing vessel, upgrading aging steering components on a performance craft, or completing a mid-life refurbishment of a boat's hydraulic steering system, this OEM-specification part ensures compatibility and maintains the integrity of the power steering circuit. The natural steel finish is typical for marine hardware and accepts additional surface coatings if extended corrosion protection in saltwater environments is desired.