MAR501 Aftermarket Bombardier/Volvo Penta 5.7L GM V8 Exhaust Manifold | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Bombardier/Volvo Penta 5.7L GM V8 Exhaust Manifold - Part Number: MAR501

A water-jacketed exhaust manifold for Volvo Penta and OMC/Bombardier GM 5.7L V8 engines. It replaces 3847501, 3852374, 3857579 and 3857723 manifolds used in the 1994-2001 period.

⚙️ Key Features

• For GM 350 CID / 5.7L V8 marine engines

• Water-jacketed cast-iron manifold

• Covers Volvo Penta and OMC/Bombardier service numbers

• Matches MAR501 / HOT20986 family

• Use new manifold and elbow gaskets

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 3857723 → Later reference related to 3847501, 3852374 and 3857579

OEM / Related Numbers:

• MAR501

• 3847501

• 3852374

• 3857579

• 3857723

Aftermarket / Verified Equivalents:

• Recmar: MAR501

• HDI Marine: HOT20986

• GLM: 51430

• HGE: HGE4035

• Osco: OSC52374

• Sierra: 18-1986-1

🚤 Compatibility

Commonly used on:

• Volvo Penta and OMC/Bombardier GM 5.7L wet-exhaust systems

Typically suits:

• Engine models:

• Volvo Penta 5.7L-LK

• Volvo Penta 5.7GL

• Volvo Penta 5.7GS

• Volvo Penta 5.7GXi / 5.7Gi

• Volvo Penta 5.7OSXi

• OMC/Bombardier 5.7L applications using the listed manifold numbers

• Engine Displacement: 350 CID / 5.7L

• Year Range: approximately 1994-2001

🔌 Function

The manifold collects exhaust from one V8 cylinder bank while the water jacket removes heat before the elbow.

Common signs of failure:

• External exhaust or cooling-water leakage

• Internal water leakage into the exhaust ports or cylinders

• Restricted cooling passages or abnormal manifold temperature

• Cracked casting, warped flange or corroded sealing face

• Loss of power caused by an internally restricted exhaust passage

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging