Heavy Duty Crankshaft Sleeve Adapter For Gas Engines One Inch To One Eighth Keyed Bushing With Extended Half Inch Offset And Bolt On Hardware For No Sweat Engine Alignment

Crankshaft Extension Adapter For Smaller Shaft Holes
✔️ Adapts 1 inch input shafts to a 1 1/8 inch outer bore

This steel sleeve links narrower crankshafts to wider pulley holes so you maintain smooth belt tracking. Mechanics recommend it for restoring older walk behind mowers or small commercial blowers because it stops belt whip and delivers steady torque to ground engaging tools. You keep the machine running longer without touching expensive drivetrain parts.

✅ Inner diameter measures 1 inch for tight shaft fit
✅ Outer diameter steps up to 1 1/8 inch for wider mounting
✅ Built in quarter inch keyway locks belts under torque
✅ Extended length adds enough reach for bigger hub holes
✅ Comes ready with two matching keys and metal screws

💡 What is a crankshaft sleeve adapter used for?

This little piece saves you the headache of hunting down rare replacement motors.

- It expands narrow outputs so you can grab cheaper surplus pulleys

- The solid metal build handles vibration without looseness mid operation

- Simple bolt on design means you finish the swap with basic hand tools

✝️