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Sierra 18-1956-3 Exhaust Manifold Mercruiser

Save $220.01 Save $220.01
Original price $675.00
Original price $675.00 - Original price $675.00
Original price $675.00
Current price $454.99
$454.99 - $454.99
Current price $454.99

Sierra 18-1956-3 Exhaust Manifold Mercruiser

  • Manifold
  • Replaces Sierra 18-1956-1; 18-1956-2


MC 1 99798

Mercruiser Stern Drive:


Sierra Marine Manifold is equivalent to parts:

  • 18-1956-2 Sierra Marine
  • 860235A04 Mercury Marine
  • 860235A03 Mercury Marine


This manifold is for most 1983-1995 2.5L and 3.0L; 120 and 140; Mercruiser 4 cylinder engines with MerCarb and 5 bolt pattern. Comes with complete gasket kit; new riser studs; and new end plates (everything seen in picture). Does not come with new Carburetor gasket. Replaces Mercruiser Part #99798A9. Used with Merc Carb-Electric Choke. Accepts all original linkage. Includes pipe plugs; gaskets and end plates.Does not come with carb gasket or mounting bolts.Fits Engines: Most late Model 2.5L 153 and 3.0L 181 with MerCarb; 5 bolt pattern. OE Replacement: 99798A18; 806867A8. NOTE: Mercruiser Cooling System Manifold w/ Mounting Package; 18-1956-1 . A Mercruiser cooling system built for both port and starboard. Port and Starboard This manifold are painted; packaged and leak tested Replaces: Mercruiser Inboard/Outboard #99798A18; 806867A8 This Mercruiser manifold fits most late model 2.5L 153 CID & 3.0L 181 CID with MerCarb 5 bolt pattern Use With: Exhaust Manifold Gasket: 18-1204 Mounting Kit: 18-4009 Supplied with mounting package.