Sierra / Mallory

Interchanges/Replaces

GLM

• 33230

Johnson/Evinrude Outboard

• 304762

Interchanges/Replaces

GLM

• 34610

Johnson/Evinrude Outboard

• 319097
• 331916

Mallory

• 9-60430

Key Features:

• Dry Joint Style

Additional Details:

• Fits: 2004 & newer MCM GM V-6 & V-8(305, 350 & 377 cid) eng. w/dry joint exh manifold (s/n 0W310000 & up)
• Fits: 2002 & newer MIE GM V-8 (350 & 377 cid) eng w/dry joint exh manifold (s/n 0M317000 & up)

Use With:

• 18-0720: Riser Gasket (Closed)
• 18-0721: Riser Gasket (Open)
• 18-0722: Riser Gasket (Restricted)
• 18-1843: Manifold
• 18-1842: V6 Dry Joint Exhaust Manifold

Interchanges/Replaces

Mercruiser Stern Drive

• 864591T02

Additional Details:

• Fits: MCM 3.7L engines with aluminum exhaust manifolds (1985-1989)

Use With:

• 18-8530: Exhaust Elbow Mounting Kit
• 18-1937: Elbow

Interchanges/Replaces

GLM

• 32470

Mallory

• 9-61412

Mercruiser Stern Drive

• 27-18272
• 27-97863

Osco

• 8561-G

Additional Details:

• Fits: MCM 120 (1993 & newer), 140/3.0L, 470, 165 in-line 6 cyl., GM V-8 small block (1982 & older)
• Fits: Ford V-8 engines

Use With:

• 18-1971: Elbow
• 18-1972: Elbow
• 18-1978: Elbow
• 18-1975-1: Riser With Exhaust Tube

Interchanges/Replaces

Barr

• MC472799777

GLM

• 31520

Mallory

• 9-61407

Mercruiser Stern Drive

• 27-52076
• 27-99777
• 27-997771
• 27-997772
• 27-99777B2

Osco

• 52076

Additional Details:

• For: Closed cooling
• Fits: GM V-6 & V-8 with center rise outlet exhaust manifold

Use With:

• 18-1908: Manifold Riser Spacer
• 18-1974-1: Elbow
• 18-1952-1: Manifold
• 18-1953-2: Manifold
• 18-1976-2: Manifold Elbow
• 18-1957-2: Manifold
• 18-1970-2: Riser Elbow

Interchanges/Replaces

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

Additional Details:

• For: Standard cooling, restrictor gasket
• Fits: 1981-1997 GM V-6 & V-8 Engines with center rise outlet exhaust manifold

Use With:

• 18-1908: Manifold Riser Spacer
• 18-1974-1: Elbow
• 18-8556: Exhaust Elbow Mounting Kit
• 18-1952-1: Manifold
• 18-1953-2: Manifold
• 18-1958-1: Manifold
• 18-1962-1: Manifold
• 18-1985: Manifold Spacer
• 18-1976-2: Manifold Elbow
• 18-1957-2: Manifold
• 18-1970-2: Riser Elbow

Interchanges/Replaces

Barr

• MC 20 99208
• MC47-27-41813

GLM

• 30240

Mallory

• 9-61413

Mercruiser Stern Drive

• 27-41813
• 27-860233
• 27-863724

Osco

• 8503-GR

Additional Details:

• Fits: MIE 470

Interchanges/Replaces

Barr

• MC47-27-92720

GLM

• 32630

Mallory

• 9-61415

Mercruiser Stern Drive

• 27-92720

Use With:

• 18-1925: Manifold
• 18-1926: Manifold
• 18-1929: Manifold
• 18-1933: Manifold
• 18-1916: Riser
• 18-1917: Block Off Manifold Plate
• 18-1927: Riser

Interchanges/Replaces

Barr

• CR 47 C 96108

Crusader

• 96108

Mallory

• 9-65400

Osco

• 6108

Interchanges/Replaces

Barr

• CR 47 C 96562

Crusader

• 96562

Mallory

• 9-65401

Osco

• 6562

Use With:

• 18-1938: Riser
• 18-1984: Manifold Spacer

Interchanges/Replaces

Barr

• CR 47 C 98127

Crusader

• 98127

GLM

• 36840

Mallory

• 9-65402

Osco

• 9015-G

Use With:

• 18-1911: Manifold End Plate
• 18-1948: Elbow

Interchanges/Replaces

Mallory

• 9-65301

Osco

• 121

Use With:

• 18-8535: Exhaust Elbow Mounting Kit (Blocked)
• 18-1999: Manifold Elbow
• 18-1939: Riser
• 18-1907: Riser
• 18-1898: Manifold

Interchanges/Replaces

Barr

• 01-0107

GLM

• 36830

Mallory

• 9-65501

Osco

• 992-G

Additional Details:

• For: Standard cooling, full flow 4 slot gasket
• Fits: 1998-2001 Gm V-6 & V-8 with center rise outlet exhaust manifold

Use With:

• 18-1908: Manifold Riser Spacer
• 18-1952-1: Manifold
• 18-1953-2: Manifold
• 18-1958-1: Manifold
• 18-1962-1: Manifold
• 18-1974-1: Elbow
• 18-1976-2: Manifold Elbow
• 18-1985: Manifold Spacer
• 18-8554: Exhaust Elbow Mounting Kit
• 18-1957-2: Manifold
• 18-1970-2: Riser Elbow

Interchanges/Replaces

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

Additional Details:

• Fits: MCM 120 (1993 & newer), 140/3.0L, 470, 165 in-line 6 cyl., GM V-8 small block (1982 & older)
• Fits: Ford V-8 engines

Interchanges/Replaces

Barr

• MC472799777

GLM

• 31520

Mallory

• 9-61407

Mercruiser Stern Drive

• 27-52076
• 27-99777
• 27-997771
• 27-997772
• 27-99777B2

Osco

• 52076

Additional Details:

• Fits: MCM 120

Use With:

• 18-1973: Elbow
• 18-1975-1: Riser With Exhaust Tube

Interchanges/Replaces

Barr

• MC472739915

GLM

• 31410

Mallory

• 9-61423

Mercruiser Stern Drive

• 27-39915

Osco

• 5538-G

Additional Details:

• For: Closed cooling
• Fits: GM V-6 & V-8 with center rise outlet exhaust manifold

Use With:

• 18-1970-2: Riser Elbow
• 18-1976-2: Manifold Elbow
• 18-1908: Manifold Riser Spacer
• 18-1974-1: Elbow
• 18-1952-1: Manifold
• 18-1953-2: Manifold
• 18-1957-2: Manifold

Interchanges/Replaces

Barr

• MC 20 87918

GLM

• 30220

Mercruiser Stern Drive

• 27-41811
• 27-860231
• 27-863725
• 27-8637251

Osco

• 8503-GB

Interchanges/Replaces

OMC Stern Drive

• 910113

Exhaust Elbow Gasket
Replaces: Mercruiser 27-97542
For: 3.7L w/cast iron manifolds 1983-89
Our outdrive mounting gaskets are more tear resistant than the OEM and other aftermarket competitors and feature our exclusive “anti-stick” coating for easy removal the next time they need replaced.

Exhaust Elbow Gasket
Replaces: Mercury Marine 27-18272
For: 3.7L w/aluminum manifolds 1985-89
Our outdrive mounting gaskets are more tear resistant than the OEM and other aftermarket competitors and feature our exclusive “anti-stick” coating for easy removal the next time they need replaced.