Shields Hose Exhaust Hose

Shields Hose Exhaust Hose: Marine-Grade Reliability Below Decks

When it comes to routing hot, moisture-laden exhaust gases through a boat's engine compartment, the hose you choose is anything but a minor detail. Shields Hose has built its reputation on engineering marine hoses specifically for the punishing conditions found aboard yachts and pleasure craft, and their exhaust hose lineup is among the most trusted in the industry.

The ShieldsFlex II Series 250: A Flagship Exhaust Hose

The centerpiece of Shields Hose's exhaust hose offering is the ShieldsFlex II (Series 250) — a hardwall, wire-reinforced marine water/exhaust hose designed for the unique demands of wet-exhaust systems. The hose features a black synthetic rubber tube and cover, reinforced with a wire helix embedded between plies of heavy-duty synthetic cord. That internal wire reinforcement is critical: it makes the hose applicable for long runs and connections which require a significant bend — a common challenge when routing exhaust through tight engine compartments.

ShieldsFlex II is primarily used for engine intake, wet exhaust connections where bends or long lengths are required, bilge pump intake/discharge, scupper lines, toilet intake/discharge, and holding tank vent/pump-out. This versatility makes a single product line capable of serving multiple onboard systems.

Built to Exceed Industry Standards

What truly separates Shields exhaust hose from generic alternatives is its commitment to rigorous certification. The hose meets SAE J2006 Type R2 standards, and it features double the ozone resistance required by SAE J2006. Every hose is engineered to meet or exceed strict ABYC, NMMA, and USCG standards, providing the durability and flexibility required for complex onboard plumbing.

The material composition is purpose-built for the marine environment. The ShieldsFlex II is resistant to exhaust fumes, ozone, mild chemicals, antifreeze, saltwater, abrasion, and odor permeation. The temperature range runs from -20°F to 200°F continuous, with intermittent tolerance up to 250°F — essential for surviving the heat cycles generated by marine engines in real-world use.

Size Range and Application Flexibility

Shields offers the ShieldsFlex II in an extensive range of inner diameters, spanning from 1/2" up to 8" inner diameter, ensuring the right fit whether you're working on a small outboard-powered runabout or a large inboard-powered yacht. Shields hoses are mainly meant for yachts and pleasure craft and meet the requirements set by USCG, ABYC, and other regulatory agencies.

Why Choose Shields Hose for Exhaust Applications?

• Wire-helix reinforcement maintains shape and flow under vacuum and pressure, even through tight bends and long runs
• Double the required ozone resistance per SAE J2006 for long-term durability in marine environments
• SAE J2006 Type R2 certified — the recognized standard for marine wet exhaust hose
• Resistant to exhaust fumes, saltwater, antifreeze, ozone, and abrasion
• Wide temperature range (-20°F to +250°F intermittent) for reliable performance across seasons and climates
• Available in sizes from 1/2" to 8" to accommodate virtually any marine engine application

Whether you're replacing aging hose on a cruiser or spec'ing out a new build, Shields Hose exhaust hose delivers the material integrity and regulatory compliance that serious boaters rely on. Browse the full selection of marine exhaust hose or explore everything Shields Hose has to offer across their complete marine hose lineup.