Key Features:

• OMC GM Small block V8 305-350 cu. in. (1979-89)
• OMC/Volvo GM Small Block 305-350 cu. in.

Use With:

• 18-1902: Manifold
• 18-1903: Manifold
• 18-1931-1: Manifold
• 18-1986-1: Manifold

Interchanges/Replaces

Mallory

• 9-40671

Osco

• 244-MK

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
18-3720	GLM 21160 Mallory 9-72002 9-72002-10 Mercruiser Stern Drive 11-34932 11-82671013 Mercury Marine 11-34932 11-82671013	6	Stainless Steel Locknut

Additional Details:

• Fits: MCM/MIE GM V-8 (283, 305, 350 & 377 cid) engines

Use With:

• 18-1902: Manifold
• 18-1903: Manifold
• 18-1925: Manifold
• 18-1926: Manifold
• 18-1931-1: Manifold
• 18-1951-1: Manifold
• 18-1986-1: Manifold
• 18-1997-1: Manifold
• 18-1950-1: Manifold
• 18-1953-2: Manifold
• 18-8502: Exhaust Manifold Mounting Kit

Interchanges/Replaces

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

Additional Details:

• For: Volvo 5.0L, GL, GXI, OSI, and 5.7L, GL, GI, GXI, GIL, GXIL, OSI, OSXI

Use With:

• 18-1997-1: Manifold
• 18-1986-1: Manifold
• 18-1902: Manifold
• 18-1903: Manifold

Interchanges/Replaces

Barr

• CHV470000
• OMC-47-909314

GLM

• 31101

OMC Inboard

• 909314

OMC Stern Drive

• 3852468
• 909314

Osco

• CV-GH

Volvo Penta

• 3852468