Additional Details:

• For: #1, Bravo I, II, III

Interchanges/Replaces

GLM

• 89150

Mallory

• 9-72810

Mercruiser Stern Drive

• 78458
• 78458A1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-710-48-2	Mercruiser Stern Drive 54-32533 54-815504348 OMC Stern Drive 3852604 912667 981323 Volvo Penta 3852604	1	Hose Clamp-2-9/16 TO 3-1/2		N/A
9-73116	Mercruiser Stern Drive 54-86049	1	BELLOWS GROUND CLIP		N/A

Key Features:

• Barr & Indmar Ford Small Block V8 302-351 cu. in.

Use With:

• 18-1904: Manifold
• 18-1998-1: Manifold
• 18-1907: Riser

Interchanges/Replaces

Mallory

• 9-40172

Osco

• FL-994MK

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0183-1	Barr FM 47 0000 MC47-27-73866 GLM 33790 Mallory 9-61420 Mercruiser Stern Drive 27-54566 27-73866 OMC Stern Drive 3852455 3853742 908717 916262 Osco FL-GH Pleasurecraft RM0007 Volvo Penta 3852455 3853742	1	Exhaust Manifold Gasket		N/A
18-4258	Crusader 113186 GLM 21892 Mallory 9-41205 Mercruiser Stern Drive 22-33198 22-33198A1 22-41622 22-46754 Osco 1016012	3	Pipe Plug		N/A

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

Additional Details:

• Size: 8" or 203.2mm
• 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
• 18-8519: 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 97169

Crusader

• 97169

Mallory

• 9-40410

Osco

• 7169

Key Features:

• 3" Outlet

Additional Details:

• 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:

• 18-1916: Riser
• 18-1925: Manifold
• 18-1926: Manifold
• 18-1927: Riser
• 18-1929: Manifold
• 18-1933: Manifold
• 18-8515: Exhaust Manifold Mounting Kit
• 18-0309-1: Exhaust Elbow Gasket

Interchanges/Replaces

Barr

• CR 20 98068

Crusader

• 98068

Mallory

• 9-40417

Osco

• 8068

Additional Details:

• For: Crusader GM Big Block V8 454 cu. in.

Use With:

• 18-1929: Manifold
• 18-1933: Manifold

Interchanges/Replaces

Mallory

• 9-40473

Osco

• 799-MK

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0418	Barr CHVA470000 MC47-27-46820 Crusader 96653 GLM 33760 Mallory 9-61400 Mercruiser Stern Drive 27-46820 OMC Inboard 909613 OMC Stern Drive 3852472 909613 Osco CW-GH Volvo Penta 3852472	1	Exhaust Manifold Mounting Gasket		N/A

Additional Details:

• Fits: MCM 898, 228, 250, 260 & Ford V-8 engines

Use With:

• 18-1950-1: Manifold
• 18-1951-1: Manifold
• 18-1958-1: Manifold
• 18-1962-1: Manifold
• 18-1971: Elbow
• 18-1978: Elbow

Interchanges/Replaces

Barr

• MC-20-60207

GLM

• 50006

Mallory

• 9-40540

Mercruiser Stern Drive

• 60207

Osco

• 60207

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:

• Fits: Late model Mercruiser 4 cylinder engines
• Fits: MCM 2.5L & 3.0L/LX (1982 & newer)

Use With:

• 18-1901: Manifold
• 18-1954-1: Manifold
• 18-1955-1: Manifold
• 18-2748: Exhaust Boot
• 18-2833: Exhaust Elbow Gasket
• 18-8551: Hardware Kit [Exhaust Elbow Bolts]
• 18-2819-1: Exhaust Elbow Gasket
• 18-1956-3: Manifold

Interchanges/Replaces

Barr

• MC-20-12076

GLM

• 51160

Mallory

• 9-40555

Marine Power

• 6000-33A

Mercruiser Stern Drive

• 12076A1
• 12076A2
• 95864A2

Osco

• 2076

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2748	GLM 89120 Mallory 9-72805 Mercruiser Stern Drive 32-44348 32-44348001 32-44348T	1	Exhaust Boot		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
18-710-72-2	Mercruiser Stern Drive 54-31765 54-815504372	4	Hose Clamp-4-1/16 TO 5		N/A
18-8551	GLM 22445 Mallory 9-40585 Osco 2076-MK	1	Hardware Kit [Exhaust Elbow Bolts]

Additional Details:

• Fits: MCM/MIE GM V-8 (454, 482, 496, 502 & 540 cid) engines
• Fits: Volvo 7.4L, GL, GI, GSI, and 8.2L, GL, GI, GSI

Use With:

• 18-1898: Manifold
• 18-1929: Manifold
• 18-1933: Manifold
• 18-1982: Manifold
• 18-1957-2: Manifold

Interchanges/Replaces

Barr

• CHVA470000
• MC47-27-46820

Crusader

• 96653

GLM

• 33760

Mallory

• 9-61400

Mercruiser Stern Drive

• 27-46820

OMC Inboard

• 909613

OMC Stern Drive

• 3852472
• 909613

Osco

• CW-GH

Volvo Penta

• 3852472

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