Oil foot cap gasket – code: 26-830749 – Mercury

Mercury oil sump plug gasket – code 26-830749

The gasket for Mercury oil sump plug with code 26-830749 is a spare part dedicated to sealing the oil plug of the lower unit in Mercury outboard engines. It is a simple but essential component in routine maintenance operations: a gasket in good condition helps maintain a proper seal of the plug and manage the phases of checking and replacing the lower unit oil in an orderly manner.

Spare part features and details

The gasket is intended for the lower unit oil plug and is used as a sealing element at the closure point. During maintenance, the gasket can be replaced when worn, deformed, or no longer suitable to ensure a proper seating of the plug.

Product identification

• Description: Oil sump plug gasket
• Brand / destination: Mercury
• Reference code: 26-830749

Compatibility (information available in the data)

According to the available information, the gasket is suitable for models from 25 to 250 hp. To avoid purchase errors, it is advisable to always verify the code 26-830749 with the spare parts diagram or with the documentation of your engine.

Typical applications in the nautical field

This gasket is commonly used during interventions related to the lower unit oil circuit, particularly when working on the fill or drain plug (depending on the lower unit configuration). It is a spare part used both in scheduled maintenance and in repair interventions when there is a need to replace the plug gasket.

When it may be useful to replace it

• During the lower unit oil change, as a good maintenance practice.
• When the existing gasket appears flattened, marked, or no longer regular.
• In case of repeated removal of the plug, to maintain an orderly and consistent closure with the intended use.

Advantages for maintenance and spare parts management

A component like the plug gasket is often underestimated, but in practice it helps make maintenance operations smoother. Replacing the gasket when necessary helps work more carefully on the plug closure point and keep the system in conditions suitable for use.

Strengths (without unverifiable claims)

• Specific spare part identifiable by code 26-830749.
• Practical format for workshop interventions and routine maintenance.
• Simplified spare parts management thanks to the unique reference of the code.

Usage and operational notes

The gasket is installed at the oil sump plug. During assembly, it is important to work on clean surfaces and check that the plug seat and the support area are in suitable condition. If the removed gasket shows obvious signs of deformation or wear, replacement is a typical choice during maintenance.

Practical tips for identification

• Always compare the code 26-830749 with the engine documentation or the spare parts exploded view.
• If you have doubts about compatibility, check the reference before ordering, especially in the presence of foot variants or different configurations.
• For efficient maintenance management, it can be useful to keep a spare gasket dedicated to your model on board or in the workshop.

Note: the compatibility information reported on this page comes from available data (indication “from 25 to 250 hp”). In the absence of further details, verification by code remains the most reliable method for the correct choice of the spare part.

FAQ – Frequently Asked Questions

What is the reference code for this Mercury gasket?

The reference code indicated for this Mercury oil drain plug gasket is 26-830749.

What is the oil drain plug gasket for?

It is a sealing element associated with the oil drain plug (lower unit) and is used during oil check or replacement operations of the lower unit.

For which models is this gasket suitable?

From the available data, it is indicated for models from 25 to 250 hp. However, verification through code 26-830749 on exploded parts or engine documentation is recommended.

When is it advisable to replace the cap gasket?

Generally during foot maintenance, for example when removing the cap for oil operations, or if the gasket appears worn or deformed.