Sierra / Mallory

Key Features:

• GM Small Block (V8) 305-350 cu.in. (1979-1989) (Starboard)
• V-8 Starboard Side

Use With:

• 18-2949: Exhaust Manifold Gasket
• 18-8502: Exhaust Manifold Mounting Kit
• 18-1921: Manifold Elbow
• 18-2902-1: Exhaust Manifold Gasket
• 18-2902-1-9: Exhaust Manifold Gasket (Priced Per Pkg of 2)

Interchanges/Replaces

Barr

• OMC-1-912441

GLM

• 51410

Mallory

• 9-40602

OMC Stern Drive

• 912441

Osco

• 2441

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0943-2	Barr OMC 47 909786 GLM 33810 Mallory 9-61452 OMC Inboard 909786 OMC Stern Drive 351325 3850496 909786 913783 Osco 9863-G Volvo Penta 3850496 3863191	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
18-710-20-2	Mercruiser Stern Drive 54-32780 54-32880 54-815504220	1	Hose Clamp-13/16 TO 1-3/4		N/A
18-0550	GLM 22280 Mallory 9-42721 OMC Inboard 909830 OMC Stern Drive 764799 909830	1	Plug Off Cap		N/A

Key Features:

• Comes with 18-0897, 18-4203 & 18-4258
• Recommended for saltwater applications

Additional Details:

• Fits: MCM/MIE GM V-6 & V-8 with center rise outlet exhaust manifold (2002 & older)

Use With:

• 18-0672: Exhaust Elbow Gasket
• 18-0897: Exhaust Elbow Gasket
• 18-1952-1: Manifold
• 18-1953-2: Manifold
• 18-2849-1: Exhaust Elbow Gasket
• 18-1957-2: Manifold
• 18-8505: Exhaust Elbow Mounting Kit

Interchanges/Replaces

Barr

• MC-20-44354

GLM

• 51140

HGE

• 4354

Mallory

• 9-40559

Mercruiser Stern Drive

• 44354A10
• 44354A13
• 44354A3
• 44354A9
• 807914A1
• 807988A03
• 807988A2

Osco

• 4354

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
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
18-8410	Mercruiser Stern Drive 10-43749	4	Riser Bolt		N/A

Interchanges/Replaces

Barr

• OMC47311131

OMC Stern Drive

• 311131

Interchanges/Replaces

Barr

• OMC47908935

GLM

• 32980

OMC Stern Drive

• 908935

Interchanges/Replaces

OMC Stern Drive

• 311131

Interchanges/Replaces

Barr

• OMC47311130

GLM

• 33340

OMC Stern Drive

• 311130

Use With:

• 18-1901: Manifold

Interchanges/Replaces

Barr

• OMC47311121

GLM

• 33330

OMC Stern Drive

• 311121

Additional Details:

• Fits: MCM/MIE 120/2.5L, 140/3.0L, 165 (I/L 6 cyl.), 470, 898, 228 & 260

Interchanges/Replaces

Barr

• MC472773814

GLM

• 30920

Mercruiser Stern Drive

• 27-73814
• 27-738141
• 27-807218

Key Features:

• For: GM 4 Cyl.

Use With:

• 18-1901: Manifold

Interchanges/Replaces

Barr

• OMC47907761

GLM

• 32580

OMC Stern Drive

• 907761

Use With:

• 18-1950-1: Manifold
• 18-1951-1: Manifold
• 18-1958-1: Manifold
• 18-1960-1: Manifold
• 18-1962-1: Manifold
• 18-8512: Exhaust Manifold Mounting Kit
• 18-1954-1: Manifold
• 18-1955-1: Manifold
• 18-1956-3: Manifold
• 18-2832-1: Manifold End Cap Gasket

Interchanges/Replaces

Barr

• 160252

GLM

• 51010

Mallory

• 9-40541

Mercruiser Stern Drive

• 52999
• 60252
• 60252A2

Osco

• 60252

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

Key Features:

• Packaged as a set, complete with mounting hardware
• 3" Riser Kit

Additional Details:

• Fits: MCM V-6 carb & TBI eng. w/ 2 piece exhaust manifolds (s/n 0M614999 & below)

Use With:

• 18-1952-1: Manifold
• 18-8554: Exhaust Elbow Mounting Kit
• 18-8555: Exhaust Elbow Mounting Kit
• 18-1953-2: Manifold
• 18-1957-2: Manifold

Interchanges/Replaces

GLM

• 50310

Mercruiser Stern Drive

• 807476A6
• 93320A13
• 93320A2
• 93320A3
• 93320A5
• 93320A6

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-1908	Barr MC-20-93320A3 Mallory 9-40530 Mercruiser Stern Drive 93320 Osco 3320	2	Manifold Riser Spacer		N/A
18-4258	Crusader 113186 GLM 21892 Mallory 9-41205 Mercruiser Stern Drive 22-33198 22-33198A1 22-41622 22-46754 Osco 1016012	2	Pipe Plug		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	2	Pipe Plug		N/A
18-2849-1	Barr MC 47 27 87105 GLM 32080 Mallory 9-61414 Mercruiser Stern Drive 27-818832 27-860232 27-863726 27-87105 27-871051 Osco 8503-GO	2	Exhaust Elbow 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	2	Exhaust Elbow Gasket		N/A
18-0672	Barr MC 20 87918 MC-47-27-41811 GLM 30220 Mallory 9-61422 Mercruiser Stern Drive 27-41811 27-860231 27-863725 27-8637251 Osco 8503-GB	2	Exhaust Elbow Gasket		N/A
NSS	Mercruiser Stern Drive 11-49838	8	Lockwasher	No Image	N/A

Key Features:

• Ford small block V8 302-351 cu.in.
• GM Big Block V8 454 cu.in.
• GM Small Block 305-350 cu.in

Additional Details:

• Size: 3"

Use With:

• 18-1898: Manifold
• 18-1997-1: Manifold
• 18-1998-1: Manifold
• 18-4258: Pipe Plug

Interchanges/Replaces

Barr

• CM 20-0097

GLM

• 56030

Mallory

• 9-40130

Osco

• 994-S3

Additional Details:

• For: V-4

Interchanges/Replaces

GLM

• 33180

Johnson/Evinrude Outboard

• 319174

Mallory

• 9-60438

Additional Details:

• Fits: Most Mercury 2 & 4 Stroke Outboards w/ Integral tilt and trim

Interchanges/Replaces

Chrysler/Force/US Marine

• 813442A2

Mercury Marine

• 811618
• 811618A1
• 812843A1
• 813442A1
• 813442A2
• 893929A01
• 99660A1

Additional Details:

• Fits: MCM V-6 & V-8 (305, 350 & 496 CID) MPI Engines With ECM 555

Interchanges/Replaces

CDI

• E13-0001

Mallory

• 9-33604

Mercruiser Stern Drive

• 881731
• 8M0054726

Additional Details:

• Fits: MCM 525 EFI; MCM/MIE 8.2 Engines (2010 & Newer)

Interchanges/Replaces

Mallory

• 9-33600
• 9-33603

Mercruiser Stern Drive

• 854445

Mercury Marine

• 854445

Key Features:

• For: 4.3L TBI(1996-98), 5.0L TBI(1998), 5.7L TBI(1996-98), 7.4L(1995-98), 8.2L(1998)

Additional Details:

• Fits: MCM/MIE GM V-6 & V-8 (350, 377, 454 & 502 CID) EFI Engines

Interchanges/Replaces

Mallory

• 9-33601

Mercruiser Stern Drive

• 805217A1
• 864856A1

OMC Stern Drive

• 3850396

Volvo Penta

• 3850396

Additional Details:

• Fits: Black Scorpion Tow Sports (1998 & Newer)

Interchanges/Replaces

Mercruiser Stern Drive

• 861425

MAP Sensor
Replaces: Mercruiser 854445
Fits: MCM 525 EFI

Malfunctioning MAP sensors can often cause problems, such as an intermittent check engine light, hesitation when accelerating, elevated emissions, and even poor engine performance. So, if yours is in need of replacement, do it with Mallory Marine MAP sensors. These MAP sensors provide precise measurements of manifold absolute pressure. They are designed to perform in harsh environments, such as extreme temperatures, vibration, thermal and mechanical shock, and chemical contamination. Safeguard your engine with these quality MAP sensor components.