SIERRA 3 1/2 MARINE EXHAUST/WATER 6 1/4 For Use With Wet Exhaust Systems And Engine Water Circulation Lines; 3-1/2 Inch Inside Diameter; 4-3/32 Inch Outside Diameter; 2 Foot Length; Synthetic Rubber; -20 Degree Fahrenheit To 200 Degree Fahrenheit Continuous Temperature Range; Black; For Marine Applications