Manifold 

Key Features:

• Supplied with Mounting Package

Additional Details:

• Fits: Most Mercruiser (GM) in-line 6 cyl. engines

Use With:

• 18-8531: Exhaust Manifold Mounting Kit
• 18-0353: Carburetor Mounting Gasket
• 18-1971: Elbow
• 18-1972: Elbow
• 18-1978: Elbow
• 18-4009: Manifold End Plate
• 18-2830-1: Exhaust Manifold Gasket
• 18-2832-1: Manifold End Cap Gasket

Interchanges/Replaces

Barr

• MC 1 58759

GLM

• 51224

HGE

• 8759

Mallory

• 9-40500

Mercruiser Stern Drive

• 52073A1
• 52969A1
• 58759A1
• 58759A10
• 58759A13
• 58759A14

Osco

• 8759

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-4263	Chrysler/Force/US Marine 22-328021 22-328022 F700633 FI5810151 GLM 21893 Mercruiser Stern Drive 22-32802 22-328021 22-328022 22-841908 Mercury Marine 22-30139 22-32802 22-328021 22-328022	1	Pipe Plug		N/A
18-4256	Mallory 9-40545	1	Pipe Plug		N/A
18-2830-1	Barr MC47-27-46401 GLM 31440 Mallory 9-61416 Mercruiser Stern Drive 27-33121 27-46401 27-52584 879036 OMC Stern Drive 907932 Osco CY6-GH	1	Exhaust Manifold Gasket		N/A
18-2833	Barr MC472799777 GLM 31520 Mallory 9-61407 Mercruiser Stern Drive 27-52076 27-99777 27-997771 27-997772 27-99777B2 Osco 52076	1	Exhaust Elbow Gasket		N/A
18-0928-1	Barr MC472773814 GLM 30920 Mercruiser Stern Drive 27-73814 27-738141 27-807218	1	Gasket, Manifold End Cap		N/A
18-2832-1	Barr MC47-27-48043 GLM 31490 Mallory 9-61424 Mercruiser Stern Drive 27-48043 27-480431 Osco 48043	1	Manifold End Cap Gasket		N/A