Mercruiser Outdrive Parts Drawings *How to Videos

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Mercruiser manifold GM 305 327 350 engine before 1977

GLM aftermarket parts use with 305 - 327 - 350
V8 GM small block engines (before 1977)

  • GLM Marine aftermarket Mercruiser manifolds for use with models: 198 / 228 / 898 / 225 / 255 / 270 GM engines.
  • V8 GM small block, fully tuned design will guide exhaust gases directly to elbow without turbulence and back pressure in the meantime, additional 40% water cooling area will decrease the entire manifold body temperature significantly.
  • The tuned design will reduce turbulence and enhance flow for higher and maximum engine power.
  • Tech support Exploded view drawings search by part number or description here

GM 305 327 350 V8

GM 305 327 350 V8

Item 1a
P/N 51233
Mercruiser parts assembly exhaust manifold (port side) OEM 47737A10 Discontinued

Item 1b
P/N 51234
Mercruiser parts assembly manifold (starboard side) OEM 47738A10 Discontinued
Item 2
P/N 31100
Gasket (2 units) OEM 27-33395 $11.95

Item 3

P/N 31490 End cap gasket (5 units) OEM 27-48043-1 $15.95

Item 4
P/N 31480
Gasket (2 units) OEM 27-48042 $5.95

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

Item 8
P/N 51196
Mercruiser engine exhaust elbow 72963A9 $208.95 Call for availability
Item 9
P/N 51194
Mercruiser marine engine exhaust elbow OEM 76668A3 $199.96

Call for availability

21248 Flange Serrated Nut

21248 Flange Serrated Nut

Item 11
P/N 21248 Flange serrated nut OEM 11-49838