Sierra 18-9137-9 91379 Oetiker Clamp 1-3/16", 10/bag

Secure Your Boat's Hoses with Reliable Oetiker Clamps

Nothing disrupts a day on the water like a loose hose connection leading to leaks or engine issues. That's where these stainless steel Oetiker clamps from Sierra shine. Designed specifically for marine environments, the 1-3/16" size fits snugly over common hose diameters in fuel lines, cooling systems, and exhaust setups. Sold in a convenient 10-pack, they're an essential for any boater tackling routine maintenance or upgrades.

Unlike traditional worm-gear clamps that can slip or crush hoses, Oetiker ear clamps create a 360-degree seal with their unique pinch design. This means uniform pressure distribution, reducing the risk of wear and ensuring long-term reliability even in saltwater conditions.

Standout Features That Boaters Trust

• Premium Stainless Steel Construction: Band and housing resist corrosion from saltwater, fuel, and chemicals—ideal for harsh marine use.
• Precise 1-3/16" Clamp Range: Perfect for 1" to 1-1/8" hoses, providing a tamper-proof fit without over-tightening.
• One-Piece Design: No screws or loose parts to fail; just crimp and go for a permanent, vibration-resistant hold.
• Pack of 10: Stock up for multiple repairs or fleet maintenance without running short mid-job.
• Interchangeable Quality: Matches OEM specs for Sierra engine parts, restoring factory-level performance.

Easy Installation for DIY Boaters

Installing these clamps is straightforward—no special tools beyond a pair of side cutters or Oetiker pliers required. Slide the clamp over the hose and fitting, position the ear squarely, then squeeze closed with steady pressure. The interlocking ears form a seamless band that won't loosen under engine vibration or thermal expansion. Pro tip: For best results, pre-position the clamp loosely and align it away from barbs for maximum bite.

Once crimped, they're designed for a one-and-done application, outperforming adjustable clamps in high-stakes spots like raw water pumps or throttle linkages. If removal is needed later, simply cut off and replace—quick and cost-effective.

Ideal Applications in Marine Engines

These clamps excel in outboard motors, inboards, and sterndrives from brands like Mercury, Yamaha, and Evinrude. Use them on coolant hoses to prevent overheating, fuel lines to avoid spills, or bilge pumps for dependable priming. Their low-profile design slips into tight engine bays without snagging wires or belts.

Boaters rave about how these restore like-new sealing after years of exposure, extending hose life and cutting downtime. Whether you're prepping for a fishing trip or offshore race, they're a small investment in big peace of mind.