Sierra 18-2225-9 0.004" Shim for Johnson/Evinrude Outboard Motors (Pack of 2)

The Sierra 18-2225-9 is a precision-ground 0.004" marine shim designed for use on Johnson/Evinrude outboard motors. Sold as a pack of 2, these shims are used during lower unit and gear case service to establish or adjust the correct bearing preload and gear mesh tolerances — ensuring smooth, reliable drivetrain operation.

Key Features:

• Thickness: 0.004" (4 thousandths of an inch)
• Pack Quantity: 2 shims included
• Designed for Johnson/Evinrude outboard engine applications
• Precision-manufactured to meet or exceed OEM specifications
• Used to adjust bearing preload and eliminate play in gear case assemblies
• Part of Sierra's comprehensive shim series for fine-tolerance marine drivetrain service

Sierra has been manufacturing marine replacement parts engineered to meet or exceed original equipment manufacturer specifications for decades, earning the trust of engine manufacturers and boat builders alike. The 18-2225-9 shim is an essential component for any Johnson/Evinrude lower unit rebuild or gear case service requiring precise 0.004" shimming.