Sierra 18-9135-9 Oetiker Hose Clamp 13/16 Inch 21mm (10-Pack)

The Sierra 18-9135-9 is a precision-engineered Oetiker stepless ear clamp designed for marine fuel and cooling system applications. This clamp fits 13/16 inch (21mm) hoses and provides a secure, leak-free connection that won't loosen due to vibration or temperature cycling.

Key Features:

• Oetiker stepless design eliminates gaps for uniform 360-degree clamping pressure
• Fits 13/16 inch (21mm) diameter hoses
• Corrosion-resistant construction ideal for marine environments
• Compatible with Johnson/Evinrude outboard engines
• Convenient 10-pack for multiple repairs or maintenance jobs
• One-ear design allows installation in tight spaces

Oetiker clamps are the preferred choice for marine mechanics because they maintain consistent clamping force even as hoses age and materials expand or contract. The stepless ear design provides superior sealing compared to traditional worm-drive clamps, making them ideal for fuel lines, cooling systems, and other critical marine applications where leaks cannot be tolerated.