Foot gasket – code: 12-191833 – Mercury

Mercury foot gasket – code 12-191833

The Mercury foot gasket with code 12-191833 is a spare part designed for maintenance operations on the foot/gearcase, particularly at the service plugs of the gearcase. It is a component commonly used as a gasket for the oil drain plug or for the fill plug, where proper sealing is essential to prevent leaks and to keep the lubricant circuit in the specified conditions.

In the nautical field, a gasket in good condition is a detail that makes a difference: when the cap is removed for an oil change or inspection, the gasket can deform or lose effectiveness. For this reason, this spare part is recommended as a practical solution to restore sealing after routine maintenance.

Spare part features and details

This gasket is identified by the code 12-191833 and is associated with the brand Mercury / Quicksilver as a component OEM (original factory), according to the available information. The typical use is related to the foot area (gearcase) and the access points for lubricant draining and filling.

Key points

• Type: foot/gearcase gasket, used at the service plugs (drain or fill).
• Spare part code: 12-191833.
• Reference brand: Mercury / Quicksilver (indicated as OEM).
• Function: supports the proper sealing of the fluid and helps reduce the risk of oil leaks or water infiltration at the plug.

Why the plug gasket is important

The drain/fill plug is tightened onto a seat that must remain well sealed. The gasket works precisely at that point: it compensates for micro-irregularities, absorbs the tightening pressure, and helps maintain the seal over time. In case of a worn, crushed, or reused gasket, leaks or a less stable closure may appear.

Note on compatibility

In the available content, a validity over a wide range of models and powers is indicated (cited as an example from 8 HP up to 300 HP). Since compatibility depends on the specific foot/gearcase model and the type of plug, it is recommended to always check the code 12-191833 as the main reference before purchase, or to compare it with the removed spare part.

Typical applications in boating

This gasket is mainly used during foot maintenance activities, when intervening on the gearbox lubricant. It is a small but strategic spare part, often replaced together with the oil change or during a periodic check.

Where it is used

• Oil drain plug of the gearbox (gearcase).
• Filling plug of the foot, when provided by the maintenance schedule.
• Localized inspection o seal restoration after removing the plug.

When it may be useful to replace it

• During a oil change of the foot (when the plug is removed).
• If you notice traces of leakage near the plug.
• After maintenance where the plug has been disassembled and reassembled multiple times.
• In case of visibly worn gasket deformed o flattened.

Advantages of OEM replacement (without forcing)

When talking about service cap gaskets, the precision of the component and the match with the original seat are key aspects. Based on the information provided, this gasket is indicated as factory OEM: this means it is designed to meet the specifications of the original component.

Practical benefits for maintenance and reliability

• Certain reference via code: the code 12-191833 helps to identify the correct replacement during reordering.
• Installation consistent with the original seat: an OEM replacement is normally chosen to maintain the configuration intended by the manufacturer.
• Sealing support: a new gasket helps restore the cap closure after disassembly.
• Orderly maintenance management: having the gasket ready reduces downtime and facilitates scheduled interventions.

Usage and operational notes

The gasket is mounted at the cap (drain or fill) and works as a sealing element between the cap and the seat. Installation is generally simple, but it is important to operate carefully to avoid damaging the gasket or compromising the seating surface.

General indications (with a conservative approach)

• Code verification: before installation, check that the replacement corresponds to the code 12-191833 required by your foot/gearcase.
• Seat cleaning: remove residues and dirt from the cap area to ensure proper sealing.
• Visual inspection: if the old gasket is crushed or deformed, it is good practice to replace it.
• Correct tightening: reinstall the cap following the instructions of the engine/gearcase manufacturer (torques and procedures are not provided in the available data).

Maintenance advice

In existing content, it is recommended to replace it at every oil change intervention or when the cap is removed for maintenance. It is a simple precaution that helps maintain sealing over time and reduces the likelihood of having to reopen the cap due to minor leaks.

Product identification and supply

• Supplier product code: MC12-191833

For any doubts about compatibility, the safest way is to compare it code 12-191833 with the engine documentation or with the removed spare part, before proceeding with the order.

FAQ – Frequently Asked Questions

What is the Mercury 12-191833 foot gasket used for?

It is a gasket used at the oil drain plug or the gearcase fill plug, to support proper fluid sealing and reduce the risk of leaks.

When is it recommended to replace this gasket?

Replacement is recommended when the plug is removed for maintenance, for example during the oil change of the foot, or if the gasket is deformed or crushed.

Is this gasket original Mercury/Quicksilver?

Available data indicates it as an OEM (factory original) gasket for Mercury/Quicksilver, identified by code 12-191833.

Is it compatible with all Mercury engines?

Compatibility depends on the foot/gearcase model and the type of plug. Available content indicates it is valid for a wide range of models; for safety, it is always advisable to verify code 12-191833 on the documentation or on the removed spare part.

What is the correct reference to order the spare part?

The main reference is Mercury code 12-191833. This sheet also includes SKU DARP000047 and supplier code MC12-191833 to facilitate internal identification.