Upper Exhaust Boot | Sierra 18-2748

Upper Exhaust Boot | Sierra 18-2748

4 in. upper exhaust tube connects exhaust riser to exhaust elbow pipe on various Mercruiser marine engines.

• 4 in. ID upper exhaust tube
• 4 1/4 in. long
• Replaces Mercury 32-44348, 32-44348T, and 31-44348001
• Replaces OMC/Johnson/Evinrude 775485
• Replaces Mallory 9-72805