Mercruiser manifold GM 427 454 482 V8 engine

Mercruiser outdrive parts drawing *Videos *SEI sterndrive

Mercruiser manifold GM 427 454 482 V8 engine

427 - 454 - 482 years 1968 to 1986 V8 GM
large block marine engine

Parts with tech drawings
V8 GM big block has an extra 30% water cooling area this will help reduce temperature in port exit area for longer gasket life.
The tunes design will reduce turbulence and enhance flow for higher and maximum marine engine power.
Mercruiser manifold gaskets

51264 port 51266 starboard GM 427 454 482.

Item 1A
P/N 51264 OEM 47735A17 Exhaust manifold port $425.95

Item 1B
P/N 51266 OEM 47736A17 Exhaust manifold starboard $496.95

Item 2
P/N 33760 OEM 27-46820 Gasket *2 units $23.95

Item 3
P/N 31490 OEM 27-48043-1 Gasket end cap *5 units $14.95

Item 4
P/N 31480 OEM 27-48042 Gasket exhaust elbow *2 units $4.95

Item 5
P/N 51010 OEM 60252A2 End cap $62.95

Item 6
P/N 51030 OEM 73813A1 End cap $25.95

Item 7
P/N 22449 OEM 10-35386 Screw *8 units

Item 8
P/N 51196 OEM 72963A9 Exhaust elbow Not available yet

Item 9
P/N 51194 OEM 76668A3 Exhaust elbow Not available yet

Item 10
P/N 22391 OEM 16-49545 Stud *4 units $8.95

Item 11
P/N 21248 OEM 11-49838 Flange serrated nut *5 units $4.95