Mercury – Quicksilver Exhaust Manifold | Port or Starboard | For MerCruiser V8 Engines | 807078T10Mercury Quicksilver Exhaust Manifold Port or Starboard For MerCruiser V8 Engines 807078T10 Overview When its time to replace a worn or corroded exhaust manifold, trust the Mercury Marine 807078T10 Quicksilver Exhaust Manifold to restore factory grade performance and reliability. Built for V8 MerCruiser engines made by General Motors, this manifold fits 454 and 502 CID models (19812002) and can be installed on either the port or starboard side.