Shields 2003001:Shields 2003001 Marine Exhaust Water Series 200 Hose without Wire, 3″ x 6-1/4’For straight connections in wet exhaust systems or engine water circulation lines. Black heavy walled synthetic rubber. Reinforced with 2 or 4 plies of synthetic cord. Resistant to: engine heat, exhaust fumes, ozone, mild chemicals, antifreeze, salt water. Temperature range: -20F to +200F continuous +250F intermittent. Meets SAE J2006 Type R1…. sold by the foot !!