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Exhaust System Accessories:

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Stainless Steel 4" Diameter 90° Bends

These 304 Stainless Steel sharp 90o bends might be the answer to tight turns in your exhaust system. Designed to connect 2 pieces of 4" exhaust hose.
Part No. Description
410-12157 4" 90o Sharp Bend (each)
410-12158 4" 90o Smooth Bend (each)

Cast Aluminum 85° Exhaust Elbow

This 85o elbow can be used on any exhaust application. Commonly used to attach center rise exhaust systems to factory Y-pipes or below platform exhaust exits.
Part No. Description
421-AB75 4" 85o Cast Aluminum Elbow (each)

Inline Exhaust Reducers

These simple inline exhaust reducers we've designed to hook 2 different size exhaust hoses, tips or tubes together. They are universal in design and measure 4" in length.
Part No. Description

410-304

3" to 4" Reducer Adapters (sold each)
410-354 3.5" to 4" Reducer Adapters (sold each)

Stainless Steel Exhaust Tubing

This premium Grade 316L 4" seamless tubing is available in both polished or its raw form. It is sold by the foot. Perfect to replace long lengths of rubber exhaust hose.
Part No. Description

410-400R

Raw Finish Stainless Steel Tubing by the foot
410-400P Polished Finish Stainless Steel Tubing by the foot

Exhaust S-Pipe Drop Exit Pipes

These S-pipes are used to lower your exhaust exit location 12". They are 4" in diameter and enable you to lower exhaust exits to clear swim steps, steering, etc. They simply install with hose and clamps sold separately.
Part No. Description

410-12156

Aluminum S-Pipes Universal (pair)
410-12155 Stainless S-Pipes B/B & S/B Chevy, 12" Drop (pair)
620-17001 S-Pipe Hose & Clamp Kit (pair)

MerCruiser Y-Pipe Assembly

This Y-pipe is required when you want to add an exhaust cutout system to a boat only equipped with thru-transom exhaust. Engine removal is required for installation.

You will need one per engine. For engines without through-prop exhaust. Does not include hose or clamps.

Please specify alpha or bravo.

Part No. Description
525-44266 New Y-Pipe Assembly

Exhaust Outlet Cover Plates

These cover plates are used when you remove the Y-pipe assembly and need to cover the exhaust port that has been left exposed. These are stainless steel cover plates, not aluminum units. Designed to last a lifetime.
Part No. Description

421-260

Alpha and Bravo Applications