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IMCO- Exhaust Systems

MARINE EXHAUST SYSTEMS


Stainless Steel Risers for MerCruiser
These stainless steel riser pipes fit stock Mercruiser Center-rise type exhaust manifolds found on Alpha and Bravo packages. They also fit the Magnaflow Manifolds and Glenwood. They are made out of 16 gauge stainless steel, are fully water jacketed, and highly polished. The water pressure passes directly through the flange from the exhaust manifold. The pipes also feature 3/4 pipe fittings to accommodate stock thermostat plumbing found omany hose connections. These pipes showed a performance gain of 9 horsepower in our dyno tests. Other manufacturers have claimed much more power from this basic design, but we've tested their pipes and find their claims highly exaggerated.
     These pipes are available in 3" and 6"taller sizes for manifold with existing riser spacers. (All pipes sold in pairs.)
72.-73.
PART #
DESCRIPTION
PRICE
M-72
M-73
Thru Transom S/S Riser Pipes
Silent Choice Riser Pipes
$821
$
821
Available in 3" and 6" taller sizes for manifold with existing riser spacers, add $100

Aluminum 85° Exhaust Elbow
This 'smooth bend' cast 356 aluminum alloy exhaust elbow is designed for routing exhaust in extremely tight places. Elbow is black epoxy coated for maximum durability.
PART #
DESCRIPTION
PRICE
AB-75 4" dia. Smooth 85° Bend Cast Aluminum Elbow $34

Aluminum "S" Pipe on Stock Cast Iron Exhaust Manifold
is designed for lowering exhaust tips on the transom, usually located below swim board. Great for small boats. this pip is black epoxy coated with a Center to Center 12" of drop and is 4" in diameter.
76.
PART #
DESCRIPTION
PRICE
ASP-79 Aluminum "S" Pipe $196

Stainless Steel 90° Bends
These bends are designed to use in applications where custom design is necessary. The sharp bend is for use in tight quarters but the smooth bend should be used wherever possible because it is much more efficient in terms of exhaust flow.
77.-78.
PART #
DESCRIPTION
PRICE
SB-77
SB-78
Sharp 90° Bend - 4" Dia.
Smooth 90° Bend - 4" Dia.
$33
$
145

Aluminum "S" Pipe on Stock Cast Iron Exhaust Manifold
is designed for lowering exhaust tips on the transom, usually located below swim board. Great for small boats. this pip is black epoxy coated with a Center to Center 12" of drop and is 4" in diameter.
79.
PART #
DESCRIPTION
PRICE
ASP-79
ASP-79WO
Aluminum "S" Pipe with hose and clamps
Aluminum "S" Pipe w/out hose and clamps
$196
$
179