Exhaust hose has a black synthetic rubber tube and cover. It is reinforced with double wire helix imbedded between plies of synthetic cord and is abrasion-resistant. It is resistant to exhaust fumes, ozone, mild chemicals, antifreeze, and saltwater. This hose is primarily used for wet exhaust connections with significant bends, engine intake, and scupper lines. The temperature ranges from -20°F to + 200°F continuous. 6-1/4' length. Sierra Part #116-252-2181.