YS Parts No.OEM Parts No.Fit for EngineSize and SpecificationCategory
YS18-445618-4456Sierra 18-4456 Exhaust Protector Valve Replaces 34765A2Sierra 18-4456 Universal 3" Exhaust Flapper

Includes 3" stainless steel clamp.

Features:

Compounded rubber flapper valves stops water from entering the exhaust system
Constructed with weather resistant EPDM with U/V stabilizer
Replaces:

Mercruiser Stern Drive
34765A2, 34765A
Aqua-Power
5018
GLM
89240
Mallory
9-44000
Redline
RL4456
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-596118-5961Sierra 18-5961 Freeze PlugSierra 18-5961 Freeze Plug

Sierra high-quality freeze plug constructed of Bronze.

Size: 1-5/8"
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-1998-118-1998-1Sierra 18-1998-1 Exhaust ManifoldExhaust Manifold - Port & Starboard for Ford V8 Engines by Sierra

Fits Port and Starboard Sides. Universal Center Riser Manifold.

Use With:

Exhaust Manifold Gasket: 18-0183
Exhaust Manifold Gasket Set: 18-0603
Exhaust Manifold Mounting Kit: 18-8538
Riser: 18-1907 and 18-1939
Elbow: 18-1999
Manifold Spacer: 18-1949
Exhaust Elbow Mounting Package: 18-4363
Fuel Elbow: 18-8112
Fits:

Crusader 302 and 351 CID Engines
Interceptor 221, 260 and 289 CID Engines
Commander, Mercury, OMC, Palmer, Pleasurecraft & Waukesha
Comes with 18-4363 Mounting Package
Use 18-0603 Exhaust Manifold Gasket Set
Contains:

Exhaust Elbow Gasket: 18-2854-1
Exhaust Manifold Gasket: 18-0183-1
Pipe Plug: 18-4258
Replaces:

Barr
FM-1-83,FM183
GLM
56250
Mallory
9-40111
Osco
FL994,FLCR818
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-294918-2949Sierra 18-2949 Exhaust Manifold Gasket Replaces 856034Sierra 18-2949 Exhaust Manifold Gasket

Sierra replacement engine parts are designed to meet OEM specifications. Fits MCM/MIE GM V-8 (283, 305, 350 & 377 cid) engines.

S/S from 18-0872
Interchangeable with:

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
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-445818-4458Sierra 18-4458 Exhaust Protector Valve Replaces 700-834800A5Sierra 18-4458 Universal 5" Exhaust Protector Valve

Sierra high-quality engine parts are designed to meet OEM specifications. Fits both 5" & 6" Exhaust and includes stainless steel clamp.

Compounded rubber flapper valves prevent water from entering the exhaust system
Made with weather resistant EPDM with UV stabilizer
5" requires two 45 degree cuts.
Replaces:

GLM
89260
Mallory
9-44002
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-436418-4364Sierra 18-4364 Exhaust Elbow Mounting PackageSierra 18-4364 Exhaust Elbow Mounting Package - Open

Sierra high-quality engine parts are designed to meet OEM specifications.

Use with:

18-1907 Riser
18-1939 Riser
18-1999 Elbow
18-1971 Elbow
Mounting Package Includes:

(1) 18-2854-1 Exhaust Elbow Gasket
(1) 18-4258 Pipe Plug
Interchangeable with:

Barr
20-0082-P
Mallory
9-40171
Osco
992-MK
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-596218-5962Sierra 18-5962 Freeze PlugSierra 18-5962 Freeze Plug

Sierra high-quality bronze freeze plug.

Size: 1-3/4"
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-190718-1907Sierra 18-1907 RiserDESCRIPTION
Sierra 18-1907 Riser for Ford Small Block V-8

Sierra Cast Iron Riser for Ford Small Block V-8 302-351 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
18-2854-9: Exhaust Elbow Gasket (Priced Per Pkg of 2)
18-0476-1: Riser Block Off Gasket
Interchangeable with:

Barr
20-0102
20-0100
GLM
56120
Indmar
53-2009
53-2018
Mallory
9-40112
Osco
2018
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-2854-118-2854-1Sierra 18-2854-1 Exhaust Manifold Elbow GasketSierra 18-2854-1 Exhaust Manifold Elbow Gasket
Sierra replacement engine parts are manufactured to meet or exceed OEM requirements.

Interchangeable with:

Barr
01-0107
GLM
36830
Mallory
9-65501
Osco
992-G
s/s from part 18-2854
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-189818-1898Sierra 18-1898 ManifoldManifold for 454 GM big block V8

Special Order est. 10 Days
Port & Starboard
For use with Chris-Craft inboard, Chrysler Inboard, Crusader Inboard, Universal Inboard Cooling Systems, Mercruiser I/O, & OMC Sterndrive/Cobra Engines.
Fits 454 cu.in. GM big block V8 engines
Use with: Exhaust Gasket: 18-0418, Riser Gasket: 18-2854 open or 18-0476 blocked
Replaces: Barr CHVA-1-84, Marine Power 0991-110
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-194918-1949Sierra 18-1949 Manifold SpacerSierra 18-1949 Manifold Spacer

Sierra high-quality engine parts are designed to meet OEM specifications.

Size: 3"

For Ford small block V8 302-351 cu. in.
For GM Big Block V8 454 cu. in.
For GM Small Block 305-350 cu. in.
Use With:

18-1898 Manifold
18-1997-1 Manifold
18-1998-1 Manifold
18-4258 Pipe Plug
Interchangeable with:

Barr
CM 20-0097
GLM
56030
Mallory
9-40130
Osco
994-S3
CHRIS-CRAFT EXHAUST MANIFOLDS
YS18-851618-8516Sierra 18-8516 Exhaust Manifold Mounting KitDESCRIPTION
Exhaust Manifold Mounting Kit - Special Order est. 10 Days

California Residents: warning sign WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
CHRIS-CRAFT EXHAUST MANIFOLDS

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