Description

Mercury / MerCruiser Quicksilver Block-Off Plate — 8M0134820

The Mercury Quicksilver 8M0134820 Block-Off Plate is a genuine OEM engine block-off plate used on select Mercury and MerCruiser marine engine systems. It seals or covers an unused port or opening in the engine assembly to prevent leaks and maintain proper system operation.

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Key Specifications

• Part Number: 8M0134820

• Component Type: Engine block-off plate

• OEM Brand: Mercury Marine / Quicksilver

• UPC: 745061039834

• Typical Dimensions: approx. 3.25 in × 2.0 in × 0.25 in

• Weight: approx. 0.10 lb

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Compatible Engines / Applications

Used on various Mercury and MerCruiser engine configurations, typically where a port, passage, or accessory mounting location must be sealed.

Applications may include:

• MerCruiser sterndrive engines

• MerCruiser inboard gasoline engines

• Certain Mercury marine engine systems

Exact usage depends on the engine model and configuration.

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Function

The block-off plate is installed over an unused engine port or mounting location, creating a sealed barrier that prevents fluid leaks and protects internal engine components.

This helps ensure:

• Proper engine sealing

• Protection against oil or coolant leaks

• Secure closure of unused engine openings

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Fitment Tip:
Always confirm compatibility using the engine model and serial number in the Mercury parts catalog, as block-off plates may vary depending on the engine family and system configuration.

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

Technical Specifications:

• Type: Block-off plate
• Compatible with: Mercury MerCruiser marine engines
• Part Number: 8M0134820