Key Features:

• Starboard Side
• Supplied with Mounting Package

Additional Details:

• Fits: MCM/MIE GM V-8 (305 & 350 cid) engines (1977-1982)

Use With:

• 18-2949: Exhaust Manifold Gasket
• 18-8548: Hardware Kit [Manifold Bolts]
• 18-1971: Elbow
• 18-1978: Elbow
• 18-4008: Block Off Plate
• 18-4009: Manifold End Plate
• 18-8520: Exhaust Manifold Mounting Kit
• 18-8554: Exhaust Elbow Mounting Kit
• 18-8556: Exhaust Elbow Mounting Kit
• 18-2832-1: Manifold End Cap Gasket
• 18-2832-1-9: Manifold End Cap Gasket (Priced Per Pkg of 2)

Interchanges/Replaces

Barr

• MC-1-77235

GLM

• 51238

HGE

• 7235

Mallory

• 9-40504

Mercruiser Stern Drive

• 77235A2
• 77235A8

Osco

• 7235B

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2949	Barr CHV-47-000 MC 47 27 33395 Crusader 96306 GLM 31100 Mercruiser Stern Drive 27-33395 27-33395B Osco CV-GH Volvo Penta 835966 856034	1	Exhaust Manifold Gasket		N/A
18-2832-1	Barr MC47-27-48043 GLM 31490 Mallory 9-61424 Mercruiser Stern Drive 27-48043 27-480431 Osco 48043	2	Manifold End Cap 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
18-4263	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

Key Features:

• Supplied with mounting package
• Port & Starboard

Additional Details:

• Fits: MCM GM V-6 (229 & 262 cid) engines (1985-2002)

Use With:

• 18-2909: Exhaust Manifold Gasket
• 18-8533: Exhaust Manifold Mounting Kit
• 18-1908: Manifold Riser Spacer
• 18-1908K: Manifold Riser Spacer Kit
• 18-1985: Manifold Spacer
• 18-2849-1: Exhaust Elbow Gasket
• 18-2909-9: Exhaust Manifold Gasket (Priced Per Pkg of 2)
• 18-8554: Exhaust Elbow Mounting Kit
• 18-8555: Exhaust Elbow Mounting Kit
• 18-8556: Exhaust Elbow Mounting Kit
• 18-0672: Exhaust Elbow Gasket
• 18-0897: Exhaust Elbow Gasket
• 18-1970-2: Riser Elbow
• 18-1976-2: Manifold Elbow

Interchanges/Replaces

Barr

• MC-1-99746

GLM

• 51220

HGE

• 9746

Mallory

• 9-40505

Marine Power

• 611447

Mercruiser Stern Drive

• 99746A17
• 99746A3
• 99746A8

Osco

• 9745

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-4224	GLM 13990 Mallory 9-41200 Mercruiser Stern Drive 22-806926A1 22-862210A01	1	Drain Elbow Assembly		N/A
18-2909	Barr MC47-27-99757 Crusader 97498 GLM 32170 Mallory 9-61421 Mercruiser Stern Drive 27-99757 OMC Stern Drive 3853412 910157 915025 Osco CS-GH Volvo Penta 3853412 856116 Yamaha Sterndrive YSC-12190-00-AC	1	Exhaust Manifold Gasket		N/A
18-0897	Barr MC 20 99208 MC47-27-41813 GLM 30240 Mallory 9-61413 Mercruiser Stern Drive 27-41813 27-860233 27-863724 Osco 8503-GR	1	Exhaust Elbow Gasket		N/A

Key Features:

• Supplied with gaskets
• Will fit port and starboard
• Ideally suited for freshwater applications

Additional Details:

• Fits: MCM/MIE GM V-8 (305, 350 & 377 cid) engines (1983-2002)

Use With:

• 18-8520: Exhaust Manifold Mounting Kit
• 18-1908: Manifold Riser Spacer
• 18-1985: Manifold Spacer
• 18-8554: Exhaust Elbow Mounting Kit
• 18-8555: Exhaust Elbow Mounting Kit
• 18-8556: Exhaust Elbow Mounting Kit
• 18-0672: Exhaust Elbow Gasket
• 18-1974-1: Elbow
• 18-0897: Exhaust Elbow Gasket
• 18-2849-1: Exhaust Elbow Gasket
• 18-2949: Exhaust Manifold Gasket
• 18-2949-9: Exhaust Manifold Gasket (Priced Per Pkg of 2)
• 18-1970-2: Riser Elbow
• 18-1976-2: Manifold Elbow

Interchanges/Replaces

Barr

• MC-1-87114

GLM

• 51230

HGE

• 7114

Mallory

• 9-40507

Marine Power

• 0994-100

Mercruiser Stern Drive

• 860246Q11

Osco

• 7114B2

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-4224	GLM 13990 Mallory 9-41200 Mercruiser Stern Drive 22-806926A1 22-862210A01	1	Drain Elbow Assembly		N/A
18-0897	Barr MC 20 99208 MC47-27-41813 GLM 30240 Mallory 9-61413 Mercruiser Stern Drive 27-41813 27-860233 27-863724 Osco 8503-GR	1	Exhaust Elbow Gasket		N/A
18-2949	Barr CHV-47-000 MC 47 27 33395 Crusader 96306 GLM 31100 Mercruiser Stern Drive 27-33395 27-33395B Osco CV-GH Volvo Penta 835966 856034	1	Exhaust Manifold Gasket		N/A

Additional Details:

• Size: 3"
• For: Mercruiser GM V6 229 & 262cu.in (Models 185 & 205)
• For: Mercruiser GM Small block V8 305-350cu.in. (Models 200, 228, 230, 260 & 898)
• For: Mercruiser GM Big Block V8 454cu,in (Models 330, 340 & 7.4L)

Use With:

• 18-1952-1: Manifold
• 18-1953-2: Manifold
• 18-8554: Exhaust Elbow Mounting Kit
• 18-8555: Exhaust Elbow Mounting Kit
• 18-8556: Exhaust Elbow Mounting Kit
• 18-0672: Exhaust Elbow Gasket
• 18-0897: Exhaust Elbow Gasket
• 18-2849-1: Exhaust Elbow Gasket
• 18-1957-2: Manifold
• 18-1970-2: Riser Elbow
• 18-1976-2: Manifold Elbow

Interchanges/Replaces

Barr

• MC-20-93320A3

Mallory

• 9-40530

Mercruiser Stern Drive

• 93320

Osco

• 3320

Additional Details:

• Size: 6"
• For: 229 & 262 V-6, 305-350 Small Block V-8, 454 Big Block V-8

Use With:

• 18-1952-1: Manifold
• 18-1953-2: Manifold
• 18-8556: Exhaust Elbow Mounting Kit
• 18-2849-1: Exhaust Elbow Gasket
• 18-0897: Exhaust Elbow Gasket
• 18-1957-2: Manifold

Interchanges/Replaces

Barr

• MC 20 93322A3

GLM

• 50610

Mallory

• 9-40531

Marine Power

• 612011

Mercruiser Stern Drive

• 93322

Osco

• 3322