Description

Mercury / MerCruiser Quicksilver Sea Pump Bracket — 8077491

The Mercury MerCruiser 8077491 is a genuine OEM sea water pump mounting bracket used on many MerCruiser sterndrive and inboard engines. The bracket secures the engine-driven seawater pump to the front of the engine and maintains proper alignment with the belt-driven pulley system.

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Key Specifications

• Part Number: 8077491

• Superseded Number:807749T

• Component Type: Sea water pump mounting bracket

• OEM Brand: Mercury Marine / Quicksilver

• Typical Price Range: $70–$80 OEM retail

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Function

The sea pump bracket is part of the engine cooling system mounting hardware.

It performs several critical roles:

• Supports the seawater pump assembly

• Maintains correct belt and pulley alignment

• Keeps the pump securely mounted during engine vibration and operation

The seawater pump draws raw water from outside the boat and sends it through the engine’s cooling system. If the bracket becomes bent, cracked, or misaligned, it can cause belt wear, pump misalignment, or cooling system issues.

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Compatible Engines

The 8077491 bracket is used on many MerCruiser GM-based engines, including:

• 4.3L V6 (262 CID)

• 5.0L V8 (305 CID)

• 5.7L V8 (350 MAG / carb or EFI)

• MX 6.2L MPI

• Black Scorpion 350 / 377 engines

These engines typically appear on 1997–2002 MerCruiser Alpha and Bravo sterndrive systems, depending on serial number range.

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Typical Installation Location

The bracket mounts on the front of the engine block and supports the engine-driven seawater pump assembly used on standard cooling systems.

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Fitment Tip:
Always confirm compatibility using the engine model and serial number. MerCruiser used several seawater pump configurations, and bracket designs may vary depending on cooling system type (standard vs closed cooling) and engine generation.

Shipping:

OEM parts ship same or next day for fast Canada wide shipping.

Technical Specifications:

• Type: Sea pump (raw water pump) mounting bracket
• Compatible with: Mercury MerCruiser marine engines
• Part Number: 8077491