Overview
Big block exhaust manifold kit for specified MerCruiser marine engine applications.
Fitment Notes
For MerCruiser 454ci 7.4L engines from 1982 onward and 502ci 8.2L engines from 1990 onward.
Reference Numbers
Interchange: 807078T08; 807078Q07; 89011A8; 807078A2; 807078A4; 807078A6; 807078T10; 51240; 9011; 18-1957-1; 18-1957-2; MC-1-89011
What's Included
1 x Big Block Manifold Kit
Vehicle Applications
1982-2026 MerCruiser 454ci 7.4L Engine
1990-2026 MerCruiser 502ci 8.2L Engine