Sierra 18-720-3120 3-1/2 in. Exhaust Hose T-Bolt Band Clamp Marine Grade

The Sierra 18-720-3120 is a 3-1/2 inch T-bolt band clamp engineered for marine exhaust hose applications. Built from marine-grade 316 stainless steel, this clamp delivers reliable, corrosion-resistant clamping performance in demanding saltwater and freshwater environments. It provides a full 360° clamping surface for a secure, leak-free seal on exhaust hose connections.

Key Features:

• Clamping Range: 3.590 in. to 4.250 in. diameter
• Band Material: 316 stainless steel — .025 in. thick x .75 in. wide
• Hardware: Extra-long 1/4 in. T-bolt with nylon inset locknut; bolt, nut, and trunnion are 18-8 (304) stainless steel
• Maximum Torque: 75 inch-pounds
• Compatible with Shields Series 200 and 250 marine exhaust hose
• Suitable for below-the-waterline applications
• Works with corrugated exhaust hose
• Sold individually

Designed to meet or exceed OEM specifications, the Sierra 18-720-3120 T-bolt band clamp is the dependable choice for securing marine exhaust hose on boats and watercraft where a vibration-resistant, corrosion-proof clamp is essential.