Gasket – code: MC27-8M4502052 – Mercury

Mercury / Quicksilver gasket MC27-8M4502052

The Mercury / Quicksilver gasket with code MC27-8M4502052 is a spare part dedicated to the area water pump of Mercury / Mariner outboard motors. In the nautical field, the proper sealing of the water pump is a central aspect of routine maintenance: a gasket in good condition helps keep the assembly properly coupled and reduces the risk of leaks in the affected area.

This gasket is referred to as base gasket for the lower part of the water pump and is installed between the lower pump body and the coupling clamp. It is a component typically found in kits and water pump maintenance interventions, when disassembling, inspecting, and restoring sealing parts.

Spare part features and details

The product is identified by the code MC27-8M4502052 (supplier code) and refers to the Mercury / Quicksilver gasket 27-8M4502052. It is indicated as OEM part and replacement is reported under code 8M0224241 for updated versions. An old code 27-19701, is also indicated, useful for identifying the spare part in the presence of older documentation or exploded views.

Product references

• Code: MC27-8M4502052 / 27-8M4502052
• Replacement code (updated): 8M0224241
• Old code: 27-19701
• Type: base gasket for lower part of water pump
• Brand/Application: Mercury / Mariner (Mercury / Quicksilver)

Positioning and function

According to the component description, the gasket is located between the lower body of the pump and the coupling clamp. In this position, its function is to promote a ensure proper sealing in the coupling area, helping to limit water leaks and maintain a flow consistent with the proper operation of the pump assembly.

Typical applications

The gasket is indicated for Mercury / Mariner engines and is described as compatible with engines from about 30 to 60 HP. In practice, it is a spare part frequently encountered during water pump maintenance interventions, especially when replacing wear-prone components or when restoring the seal after disassembly.

When it may be useful to replace it

• During the water pump maintenance and the inspection of sealing parts.
• In case of disassembly of the pump and the need to restore the coupling with a gasket in good condition.
• When working on Mercury / Mariner engines for which the gasket is provided as base gasket of the pump assembly.

Operational advantages (without forcing)

This article offers clear references (current code, replacement code, and old code), useful when comparing technical sheets, exploded views, or spare parts lists.

• Simple identification: codes explicitly reported for immediate comparison.
• Targeted replacement: designed for the water pump area, where sealing is an essential aspect of the assembly.
• Consistency with routine maintenance: typical component in water pump interventions and gasket restoration.

Usage and important notes

For a correct choice of the spare part, it is advisable to always check the code reported in the spare parts manual or in the exploded view of your engine and compare it with the available references:

• 27-8M4502052 (Mercury / Quicksilver reference)
• 8M0224241 (code indicated as replacement/updated)
• 27-19701 (old code)

During installation, the gasket must be positioned correctly between the lower body of the pump and the coupling clamp, ensuring that the contact surfaces are clean and in good condition. If signs of wear or deformation are found on the seats during disassembly, it is appropriate to consider the overall intervention on the pump assembly according to the manufacturer's instructions.

Note: the compatibility indications report a range “from about 30 to 60 HP.” To avoid incompatibilities, verification through model/year and especially through spare part code remains the most reliable method.

FAQ – Frequently Asked Questions

What is the MC27-8M4502052 gasket used for?

It is indicated as the base gasket for the lower part of the water pump on Mercury/Mariner engines, positioned between the lower pump body and coupling clamp to ensure proper sealing of the assembly.

What is the difference between MC27-8M4502052 and 27-8M4502052?

MC27-8M4502052 is the product code provided by the supplier, while 27-8M4502052 is the Mercury/Quicksilver reference associated with the same gasket.

Is there a replacement code for this gasket?

Yes. Replacement with code 8M0224241 is indicated for updated versions.

What are the previous or alternative codes useful for identifying it?

In addition to the main code 27-8M4502052, the old code 27-19701 and the replacement code 8M0224241 are reported, useful for comparisons with exploded views or spare parts documentation.

For which engines is this gasket indicated?

It is indicated for Mercury/Mariner engines and compatibility is reported from about 30 to 60 HP. For safety, it is recommended to verify through the spare parts manual or your engine code.