Sierra Manifold - SIE-18-1966-1

Sierra 18-1966-1 MerCruiser 3.0L 1990-Newer Exhaust Manifold

This Sierra aftermarket exhaust manifold is for use with MerCruiser 3.0L & LX engines built from 1990 to the present.

Fits

MCM 3.0L/LX (1990 & newer); Marine Power Engine Model E181S

Includes:

Exhaust Manifold Gasket 18-0680

Exhaust Elbow Gasket 18-2833-9

Interchangeable With:

MerCruiser Stern Drive

806867A12

806867A2

806867A3

806867A8

806867A9

816329A3

860235A03

99798A18

Use With:

Elbow with Exhaust Tube 18-1975-1

Supersedes 18-1966

Frequently Asked Questions

• 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.