Mercury Tube-Exhaust - 32-14358. The Mercury Tube-Exhaust - 32-14358 is a genuine OEM replacement part designed to direct exhaust gases safely away from your outboard's engine. Crafted for durability and proper flow dynamics, this component helps maintain clean exhaust performance and protects surrounding components from harmful heat and gas exposure.. Key Features. OEM precision fit - Engineered specifically for Mercury marine engines. Durable material construction - Designed to withstand heat