Intake Manifold GM 4.3L Vortec 2 Barrel | Power Solutions 33500991Intake Manifold GM 4. 3L Vortec 2 Barrel Power Solutions 33500991 Power Solutions Intake Manifold GM 4. 3L Vortec 2 Barrel 33500991 Aftermarket intake manifold for GM 4. 3L V6 Vortec marine engines with 2 BBL Rochester carburetors. Fits GM Vortec 4. 3L liter 262 cu. in marine engines with 2 barrel Rochester carburetors Replaces Mercruiser 824324T02 Replaces OMC 3855805 Replaces Volvo Penta 3855805 Replaces Marine Power 425024 Replaces Barr 425036 !!