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Sierra Mercruiser Manifold 18-1957-1
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Quantity in Basket:
None
Code: 6787
Price: $349.95
Shipping Weight: 47.00 pounds
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Fits most Mercruiser (GM) V-8 big blocks with center riser. Port & starboard, fits either side.
Replaces: 89011A8, 807078A6. Marine Power 0991-1000
Fits the following models:
370 TRS GM serial #6721528 - up
454 Mag GM serial #A631894 - up
454 Mag Bravo GM serial #B721206 - up
454 Mag Bravo (Gen V) serial #D805069 - up
502 Mag Bravo GM serial #C878221 - up
502 Mag Bravo (Gen V) serial #D824589 - up
502 EFI serial #D840650 - up
7.4L (IB)(LHR)(Gen V) serial #D715494 - up
7.4L Bravo GM serial #B771113 - up
7.4L Mag Bravo (Gen V) serial #D603118 - up
7.4L w/Hurth (IB) serial #All
8.2L w/Hurth (IB) serial #C878221 - up
8.2L (IB) (Gen V)* serial #D857200 - up
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