Description

The Mercury Quicksilver 8M0142616 (Mercury format 27-8M0142616) is a genuine OEM lower face-plate gasket used in the gearcase / water pump assembly of many Mercury outboards and some MerCruiser applications. It seals the face plate to the gearcase housing, preventing water intrusion and oil leakage inside the lower unit.

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Key Specifications

• Part Number: 8M0142616

• Mercury Format: 27-8M0142616

• Component Type: Lower face-plate / water pump gasket

• Material: Nitrile-coated stainless steel composite

• OEM Brand: Mercury Marine / Quicksilver

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Function

This gasket forms a critical seal within the lower unit cooling system, helping to:

• Seal the water pump face plate to the gearcase

• Prevent water intrusion into the gear housing

• Prevent gear lube leaks

• Maintain correct cooling water flow and pressure.

If this gasket fails, you may notice:

• Milky gear oil (water contamination)

• Oil leaks around the lower unit face plate

• Reduced cooling efficiency.

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Compatible Engines (examples)

This gasket is used on a wide range of Mercury outboards and some sterndrive systems, including:

• Mercury V6 and V8 FourStroke outboards

• 150 HP EFI

• 200–300 HP V8 Pro XS

• 250R / 300R racing outboards

• Some engines with Sportmaster or performance gearcases.

(Exact compatibility varies by gearcase and serial number.)

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Superseded / Related Numbers

Mercury has updated this gasket over time. Related numbers include:

• 8M0112903

• 8M0050720

• Older flexible gasket 430331 replaced by this metal design.

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Fitment Tip:
Always verify compatibility using the engine model and serial number. Mercury gearcases vary widely, and water-pump components can differ between standard, Torpedo, and Sportmaster gear housings.

Shipping:

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

Technical Specifications:

• Type: Lower mounting gasket
• Compatible with: Mercury MerCruiser marine engines and drives
• Part Number: 8M0142616