BAMC-20-14478 Aftermarket Marine 4-Inch Exhaust Elbow Assembly | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Marine 4-Inch Exhaust Elbow Assembly - Part Number: BAMC-20-14478

A 4-inch exhaust transfer elbow converting the round exhaust-elbow outlet to the oval transom-pipe connection used on selected MerCruiser V6 sterndrive systems.

⚙️ Key Features

• 4-inch round exhaust connection

• Round-to-oval transfer geometry

• Marine cast exhaust construction

• For selected GM V6 sterndrive exhaust systems

• Use new bellows, clamps and sealing components

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 14478T01 → Later service reference related to 14478T

OEM / Related Numbers:

• BAMC-20-14478

• 14478T

• 14478T01

• GLM 50750

• HGE4478-A

Aftermarket / Verified Equivalents:

• Barr Marine: BAMC-20-14478

• GLM: 50750

• HGE: HGE4478-A

🚤 Compatibility

Commonly used on:

• MerCruiser V6 sterndrive exhaust transfer systems

Typically suits:

• Engine models:

• MerCruiser GM 229 CID / 3.8L V6, approximately 1987-1989

• MerCruiser GM 262 CID / 4.3L V6, approximately 1987-2002

• MerCruiser 175HP, 185HP and 205HP V6 exhaust systems using the 14478 family

• Nominal Exhaust Size: 4 in

• Connection Type: round-to-oval exhaust transfer elbow

🔌 Function

The elbow transitions cooled exhaust from the engine-side riser to the transom exhaust connection while accommodating the required sterndrive geometry.

Common signs of failure:

• External corrosion, cracking or pin-hole leakage

• Internal carbon, rust or salt restriction

• Cooling water entering the manifold, turbocharger or cylinders

• Steam, reduced cooling-water discharge or an abnormally hot exhaust hose

• Loss of power caused by excessive exhaust back-pressure

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging