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MerCruiser

V6/V8 EXHAUST MANIFOLD DIMENSIONS WITH 4” RISERS

V6 w/ 4” Riser (1983 - 0M SN #’s)
No. 51140
EXHAUST ELBOW
OEM: 807988Q03

No. 51220
EXHAUST MANIFOLD
OEM: 99746A17

V8 S.B. w/ 4” Riser (1983 - 0M SN #’s)
No. 51140
EXHAUST ELBOW
OEM: 807988Q03
No. 51230
EXHAUST MANIFOLD
OEM: 860246A10

V8 B.B. w/ 4” Riser (1981 & Up)
No. 51140
EXHAUST ELBOW
OEM: 807988Q03
No. 51240
EXHAUST MANIFOLD
OEM: 807078T08

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