Key Features:

• If blocked mounting kit is required use 18-8535

Additional Details:

• Material: Cast Iron
• Fits: 3" I.D. exhaust hose

Use With:

• 18-1898: Manifold
• 18-1997-1: Manifold
• 18-1998-1: Manifold
• 18-1991: Elbow Adapter
• 18-0476-1: Riser Block Off Gasket
• 18-2854-1: Exhaust Elbow Gasket

Interchanges/Replaces

Barr

• 20-0082

GLM

• 56110

HGE

• 0082

Mallory

• 9-40100

Osco

• 992
• CRR-1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-4364	Barr 20-0082-P Mallory 9-40171 Osco 992-MK	1	Exhaust Elbow Mounting Package (Open)		N/A

Key Features:

• Port & Starboard

Additional Details:

• Material: Cast Iron
• Fits: 454 cu. in. GM Big Block V8 Engines

Use With:

• 18-0418: Exhaust Manifold Mounting Gasket
• 18-1939: Riser
• 18-1999: Manifold Elbow
• 18-1949: Manifold Spacer
• 18-8112: Hose Fitting 90°
• 18-2854-1: Exhaust Elbow Gasket
• 18-0476-1: Riser Block Off Gasket

Interchanges/Replaces

Barr

• CHVA-1-84

GLM

• 56240

Mallory

• 9-40102

Marine Power

• 0991-110

Osco

• CW994

Key Features:

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

Additional Details:

• Material: Cast Iron
• Use: With 4" I.D. exhaust hose

Use With:

• 18-1898: Manifold
• 18-1997-1: Manifold
• 18-1998-1: Manifold
• 18-4364: Exhaust Elbow Mounting Package (Open)
• 18-8535: Exhaust Elbow Mounting Kit (Blocked)
• 18-0476-1: Riser Block Off Gasket
• 18-2854-1: Exhaust Elbow Gasket

Interchanges/Replaces

Barr

• 20-0100

GLM

• 56140

Mallory

• 9-40113

Marine Power

• 0992-593

Osco

• 99204

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

Use With:

• 18-1940: Manifold
• 18-2941: End Cap Gasket (Open)
• 18-4360: Exhaust Elbow Mounting Package
• 18-4361: Exhaust Elbow Mounting Package (Open)
• 18-8506: Exhaust Elbow Mounting Kit
• 18-2941-9: End Cap Gasket (Priced Per Pkg of 2)
• 18-0472-1: Exhaust Elbow Gasket

Interchanges/Replaces

Barr

• CM-1-6672-B

Chrysler Inboard

• 2846106

Mallory

• 9-40301

Osco

• 106

Additional Details:

• Fits: Chrysler Model 273, 318, 340 & 360 CID engines (1966-1986)

Use With:

• 18-1940: Manifold
• 18-2941: End Cap Gasket (Open)
• 18-4360: Exhaust Elbow Mounting Package
• 18-4361: Exhaust Elbow Mounting Package (Open)
• 18-8506: Exhaust Elbow Mounting Kit
• 18-2941-9: End Cap Gasket (Priced Per Pkg of 2)
• 18-0472-1: Exhaust Elbow Gasket
• 18-1945: Riser

Interchanges/Replaces

Barr

• CM-20-6672

Chrysler Inboard

• 3527794

Mallory

• 9-40313

Osco

• 794

Key Features:

• For: Chrysler Small Block V8 318-360 cu. in.
• For: All models 1966 & Up w/swivel & fixed exhaust

Additional Details:

• Kit Material: Stainless Steel Studs and Nuts

Use With:

• 18-1940: Manifold

Interchanges/Replaces

Barr

• CM 1 6677SS P

Mallory

• 9-40372

Osco

• 826-MK-SS

Additional Details:

• Degree: 90
• Size:: 1" NPT x 1 1/2" hose barb
• For: Crusader GM Small Block V8 305-350 cu.in. (Models 220, 270, CM305, CM350XL, CM350HT)
• For: Crusader GM Big Block V8 454 cu.in (Models; 454XL 502XL, CH350)

Use With:

• 18-1898: Manifold
• 18-1925: Manifold
• 18-1926: Manifold
• 18-1929: Manifold
• 18-1933: Manifold
• 18-1982: Manifold
• 18-1997-1: Manifold
• 18-1998-1: Manifold

Interchanges/Replaces

Crusader

• 97296
• 97854

GLM

• 13950

Mallory

• 9-40418

Osco

• 7854

Key Features:

• Supplied with mounting package
• Port Side

Additional Details:

• Fits: MCM/MIE Ford V-8 engines (1977 & older)

Use With:

• 18-1906: Manifold Spacer
• 18-1971: Elbow
• 18-1978: Elbow
• 18-4008: Block Off Plate
• 18-4009: Manifold End Plate
• 18-0897: Exhaust Elbow Gasket
• 18-2849-1: Exhaust Elbow Gasket
• 18-0183-1: Exhaust Manifold Gasket
• 18-2832-1: Manifold End Cap Gasket

Interchanges/Replaces

Barr

• MC-1-65604

GLM

• 51250

Mallory

• 9-40502

Mercruiser Stern Drive

• 54100A1
• 54100A5
• 65604A12
• 65604A4

Osco

• 5604

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
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	1	Pipe Plug		N/A
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
18-2832-1	Barr MC47-27-48043 GLM 31490 Mallory 9-61424 Mercruiser Stern Drive 27-48043 27-480431 Osco 48043	2	Manifold End Cap Gasket		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

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