Spacer Mis-Alignment 5/8 - 1/2in 1.375in OAL Each

The Spacer Mis-Alignment 5/8 - 1/2in 1.375in OAL Each from WEHRS MACHINE is a precision-engineered shaft spacer designed to correct minor alignment discrepancies in marine drivetrain systems. Whether you're running a center console, cabin cruiser, or performance boat, proper shaft alignment is critical to reducing vibration, wear, and fuel consumption. This spacer bridges the gap between mismatched coupling bores and flanges, allowing you to achieve factory-correct alignment without costly machine work or complete shaft replacement.

Built to WEHRS MACHINE's exacting standards, this adapter features a stepped bore design with a 5/8-inch primary bore and 1/2-inch secondary bore, allowing it to interface with two different shaft sizes in a single assembly. The 1.375-inch overall length (OAL) is sized to fit tight engine compartments while providing adequate coupling surface. The compact 0.09-pound weight ensures minimal impact on rotating mass and inertia. Precision machining ensures concentricity, reducing runout and the vibration issues that plague misaligned propshaft systems during high-speed operation or heavy throttle transitions.

This spacer is ideal for boaters performing shaft rebuilds, gearbox upgrades, or engine swaps where original coupling bore diameters don't match perfectly. It's equally valuable when replacing damaged couplings or adapting aftermarket components to existing systems. Installation requires basic mechanical skill and proper alignment tools—mount the spacer between flanges, torque to manufacturer specifications, and verify runout with a dial indicator. Compatibility spans most marine gasoline and diesel engines equipped with standard SAE flanges and shaft configurations.