Sierra 18-9134-9 1891349 Oetiker Clamp 11/16", 10/bag

Secure your marine engine's hose connections with the precision-engineered Sierra 18-9134-9 Oetiker clamps. These stainless steel ear clamps deliver a stepless, 360-degree seal that outperforms traditional clamps, ensuring leak-free performance even under high vibration and pressure. Ideal for boat owners and mechanics who demand reliability on the water.

Why Choose Stainless Steel Oetiker Clamps for Your Boat?

Crafted from durable 300-series stainless steel, these 11/16-inch clamps resist corrosion from saltwater, fuel, and exhaust gases. Unlike worm-drive clamps with their notched bands, Oetiker clamps provide uniform compression without weak points, reducing the risk of hose slippage or bursts during demanding conditions.

• Stepless Design: Ensures even pressure distribution for a superior seal.
• Vibration-Resistant: Stays locked tight on rough seas or high-RPM runs.
• Tamper-Proof: Once crimped, they can't be loosened accidentally.
• Compact and Low-Profile: Fits in tight engine compartments without snagging wires or belts.

Perfect Applications in Marine and Automotive Systems

These Sierra SS clamps excel in cooling systems, fuel lines, exhaust hoses, and water pump connections. Boat enthusiasts use them to replace factory clamps on outboards, inboards, and sterndrives from brands like Mercury, Yamaha, and Evinrude. Their 11/16-inch size (approximately 17.5 mm nominal diameter) suits common radiator and heater hoses found in most small to mid-size engines.

Pro tip: Pair them with high-quality silicone or reinforced rubber hoses for maximum longevity in harsh marine environments.

Easy Installation for DIY Mechanics

No special skills required—just the right tool. Use an Oetiker crimping plier to squeeze the ear closed until it flattens. This creates a permanent, reliable hold. Always measure your hose outer diameter first to confirm fit, and position the clamp away from bends or heat sources for best results.

1. Slide clamp onto hose end before connecting.
2. Push hose fully onto barb fitting.
3. Crimp the ear firmly with pliers.
4. Inspect for gaps and test under pressure.

Each bag contains 10 clamps, making it convenient for multiple repairs or full system upgrades.

Long-Lasting Performance You Can Trust

Engineered for the rigors of boating, these clamps maintain integrity through seasons of exposure. Regular inspections during routine maintenance will keep your systems running smoothly, preventing costly downtime from loose or failed connections.