Quicksilver 866390 Big Block Exhaust Collector Gasket

The Quicksilver 866390 is an OEM exhaust collector gasket specifically designed for MerCruiser big block marine engines. This genuine Mercury Marine gasket provides a critical seal in the exhaust system, ensuring proper exhaust flow and preventing leaks at the collector junction.

Key Features:

• Genuine OEM Quicksilver part for MerCruiser big block engines
• Engineered to Mercury Marine's exact specifications for proper fitment
• High-temperature resistant materials designed for marine exhaust applications
• Ensures proper seal at the exhaust collector to prevent exhaust leaks
• Manufactured to withstand the harsh marine environment

As a genuine Mercury Marine Quicksilver component, this gasket is manufactured to the same exacting standards as the original equipment installed on your engine. Quicksilver has been the premier supplier of Mercury Marine original equipment replacement parts for over 65 years, providing the highest quality products tested through rigorous marine environments.