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Add to CartThis Sierra aftermarket exhaust manifold is for use with MerCruiser 3.0L & LX engines built from 1990 to the present.
Fits
Includes:
Interchangeable With:
Use With:
Supersedes 18-1966
What is the Sierra 18-1966-1 MerCruiser 3.0L Exhaust Manifold used for?
The Sierra 18-1966-1 is an aftermarket exhaust manifold designed for MerCruiser 3.0L and LX engines built from 1990 onward. It is also specified for Marine Power Engine Model E181S applications.
What MerCruiser engines does the Sierra 18-1966-1 Exhaust Manifold fit?
The Sierra 18-1966-1 fits MCM 3.0L and LX engines from 1990 and newer. The product description also lists Marine Power Engine Model E181S as a compatible application. Verify your engine model and year before purchasing.
What gaskets are included with the Sierra 18-1966-1 Exhaust Manifold?
The Sierra 18-1966-1 includes an exhaust manifold gasket, part number 18-0680, and an exhaust elbow gasket, part number 18-2833-9. These gaskets are supplied with the manifold.
What MerCruiser part numbers does the Sierra 18-1966-1 replace?
The Sierra 18-1966-1 is interchangeable with MerCruiser Stern Drive part numbers 806867A12, 806867A2, 806867A3, 806867A8, 806867A9, 816329A3, 860235A03, and 99798A18.
What component can be used with the Sierra 18-1966-1 Exhaust Manifold?
The Sierra 18-1966-1 is specified for use with the Sierra 18-1975-1 elbow with exhaust tube. Verify the specific component part number against your engine application before installation.
Does the Sierra 18-1966-1 replace the Sierra 18-1966?
Yes. The product description identifies the Sierra 18-1966-1 as the replacement for Sierra 18-1966. Verify your engine application and existing part number to confirm compatibility.
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
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