Sierra 162503120S 3-1/2" ShieldFlex II Marine Water/Exhaust Hose 50 Foot

The Sierra 162503120S ShieldFlex II is a heavy-duty 3-1/2 inch marine-grade flexible hose designed for demanding below-deck applications. This 50-foot length hose features a synthetic rubber construction that resists degradation from fuel, oil, and marine environments.

Key Specifications:

• Inside Diameter: 3-1/2 inches
• Outside Diameter: 4 inches
• Length: 50 feet
• Temperature Range: -20°F to 200°F continuous duty
• Material: Synthetic rubber with reinforced construction
• Color: Black

Marine Applications:

• Engine intake and wet exhaust connections
• Bilge pump intake and discharge lines
• Toilet intake and discharge systems
• Scupper lines and holding tank vents
• General pump-out applications

The ShieldFlex II design provides excellent flexibility for tight engine compartment routing while maintaining durability against heat, vibration, and chemical exposure common in marine environments.