Cast Iron Elbows With 3 Inch Riser And Muffler Spacer - Mercury MerCruiser MCM 454 Mag MPI Service Manual

RISERS

Cast Iron Elbows With 3 Inch Riser and Muffler Spacer

NOTE: Later models will have an open gasket (four slots) instead of a restrictor gasket (two
slots and two holes). If replacing gaskets, it is acceptable to replace the old gaskets with the
open gaskets. Be sure that the same type of gasket is used on both manifolds.
Index
Page 7C-6
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l
a - Exhaust Elbow
b - Muffler Spacer 1-1/4 Inch (32 mm)
c - Open Gasket
d - Exhaust Riser 3 Inch (76 mm)
e - Separator Gasket
f - Restrictor Gasket
g - Nut (8)
h - Stud (8) 9-3/8 Inch (238 mm)
i - Stud (8) 10-3/8 Inch (264 mm) Used With Remote Oil Filter
j - Washer (8)
k - Exhaust Manifold
l - Refer To Note Following
j
i
a
f
b
c
d
c
h g
k
SERVICE MANUAL NUMBER 23
70622
90-861326--1 MARCH 1999