Sierra / Mallory

Additional Details:

• For: "R" drive (28 teeth)

Interchanges/Replaces

GLM

• 11020

Mercruiser Stern Drive

• 43-92320
• 43-92320T

Interchanges/Replaces

Johnson/Evinrude Outboard

• 317838
• 333077
• 340490
• 345992

OMC Stern Drive

• 317838
• 333077

Interchanges/Replaces

GLM

• 22672

Johnson/Evinrude Outboard

• 318304

Mallory

• 9-73502

Interchanges/Replaces

Mercruiser Stern Drive

• 31-62799A1

Interchanges/Replaces

Chrysler/Force/US Marine

• 31-12578
• 31-F523143

GLM

• 22760

Mercury Marine

• 31-12578
• 31-12578T

Interchanges/Replaces

GLM

• 22910

Johnson/Evinrude Outboard

• 389039

OMC Stern Drive

• 3852223
• 389039

Interchanges/Replaces

Johnson/Evinrude Outboard

• 307573
• 395460

Interchanges/Replaces

Johnson/Evinrude Outboard

• 318944

Interchanges/Replaces

Johnson/Evinrude Outboard

• 326877

Interchanges/Replaces

Johnson/Evinrude Outboard

• 312932

Interchanges/Replaces

Johnson/Evinrude Outboard

• 323653
• 338534

Key Features:

• U/V stabilized black plastic flange

Additional Details:

• Note: Use with Shields 2" Sternflex P/N 16-126-2000B

Additional Details:

• GM Flywheel Size: 14" or 355.6mm
• Teeth: 168

Additional Details:

• GM Flywheel Size: 12" or 304.8mm
• Teeth: 153mm

Interchanges/Replaces

Yamaha Outboard

• 64D-11603-00-00
• 64D-11603-01-00
• 64D-11603-02-00
• 6K7-11601-02-00
• 6R5-11603-00-00

Interchanges/Replaces

Yamaha Outboard

• 61A-43871-00-00
• 65W-43871-00-00
• 6H1-43871-00-00
• 6H1-43871-10-00

Additional Details:

• Material: CAST IRON

Use With:

• 18-1932: Manifold
• 18-2971: Exhaust Manifold Gasket
• 18-19360: Mounting Kit

Interchanges/Replaces

GLM

• 51520

HGE

• 7037

Volvo Penta

• 857037

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2971-1	Barr VO47-835908 GLM 35080 Mallory 9-65800 Osco 35908 Volvo Penta 835908 856039 857618	1	Exhaust Manifold Gasket		N/A

Key Features:

• Fits many GM & Ford center rise manifolds
• 4" outlet 7°

Additional Details:

• Material: CAST IRON

Use With:

• 18-1848: Manifold
• 18-1986-1: Manifold
• 18-8507: Exhaust Elbow Mounting Kit
• 18-0943-2: Exhaust Elbow Gasket

Interchanges/Replaces

Barr

• OMC-20-913784

GLM

• 51330

HGE

• 3784

Mallory

• 9-40911

OMC Stern Drive

• 3850456
• 3855270
• 3856444
• 3857944
• 913784

Osco

• 50456

Volvo Penta

• 3855270
• 3857944
• 3863061

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

Key Features:

• For use with 3" I.D. exhaust hose

Additional Details:

• Material: Cast Iron
• For: Ford Small Block V8 302-351 cu. in.

Use With:

• 18-1997-1: Manifold
• 18-1998-1: Manifold
• 18-4364: Exhaust Elbow Mounting Package (Open)
• 18-8535: Exhaust Elbow Mounting Kit (Blocked)
• 18-8538: Exhaust Manifold Mounting Kit
• 18-0476-1: Riser Block Off Gasket
• 18-2854-1: Exhaust Elbow Gasket

Interchanges/Replaces

Barr

• 20-0100
• 20-0102

GLM

• 56120

Indmar

• 53-2009
• 53-2018

Mallory

• 9-40112

Osco

• 2018

Additional Details:

• Size: 4" or 101.6mm
• For: Crusader GM Small Block V8 305-350cu.in. (Models 220 & 270)
• For: Crusader GM Big Block V8 454cu.in (Models CH350 and 454XL)

Use With:

• 18-1925: Manifold
• 18-1926: Manifold
• 18-1929: Manifold
• 18-1933: Manifold
• 18-8523: Exhaust Elbow Mounting Kit
• 18-1918: Elbow
• 18-1928: Elbow w/ 4" Outlet
• 18-1934: Elbow w/ 3" Outlet
• 18-0305-1: Exhaust Elbow Gasket
• 18-0309-1: Exhaust Elbow Gasket

Interchanges/Replaces

Barr

• CR 20 97772

Crusader

• 97772

Mallory

• 9-40401

Osco

• 7772