Product DetailsNew Sierra 18-1956-3 marine exhaust manifold for 1983 to 1989 MerCruiser 2.5L and 3.0L marine gas 4-cylinder engines. MerCarb carburetor. See cross reference below to determine if this will replace your existing manifold. Comes with gasket set and additional accessories seen in product photo.
This part is new and high-quality cast iron construction. To determine if this is the correct replacement for you, look on your current part for casting numbers and match them to the cross reference below:
|Cross Reference||Part Number|
|MerCruiser||99798A3, 99798A9, 99798A16, 860235A04|
|Sierra Marine||18-1956-2, 18-1956-3|
Sierra provides premium-quality aftermarket replacements for over 6,000 marine parts, tools, and components. Sierra products are engineered to meet or exceed OEM standards, and stand up in harsh marine environments. Every new Sierra part comes with a limited lifetime warranty that covers the useful life of the product against any defects in workmanship and materials.