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10Pcs 830749 Gearcase Drain Plug Seal, Lower Unit Drain Plug Seal Washer Gaskets 3/8”-16 Oil Drain Plug Seal Washers Compatible with Most Mercury/Mariner Outboards and Mercruiser

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$5.99

$ 2 .99 $2.99

In Stock

About this item

  • Compatibility: These lower unit drain and fill screws gaskets are compatible with most Mercury/Maruner outboards and all mercruiser models, including Mercury Marine 12-19183 & 12-191832 12-191833, Mallory Marine 9-60101 & 9-60102, Sierra Marine 18-2945 & 18-2244, SEI Marine 98-102-09, OBR Red Rhino MR-103, GLM 31170. Note: Not compatible with the Japanese model
  • These oil drain plug gaskets for Mercury Marine can only be used with 3/8"-16 drain screws in outboard and sterndrive gearcase. Note: Make sure these lower unit seal is secured in the correct position when re-mounting the drain screw to avoid water penetration damage to the gearcase.
  • These outboard lower unit washers are an excellent way to seal drain plugs and can go a long way towards solving the problem of gear oil leaks. Simply replace these outboard drain plug seals every time you drain and refill your lower unit oil, which not only maintains a good seal for a long time, but also makes it easier to get the 3/8”-16 screws out at the next oil change.
  • These 3/8”-16 oil drain plug screw gaskets are made of high quality non-asbestos sealing material, which is more impermeable than ordinary seals and can prevent the gear oil from leaking out. In addition, these outboard lower units fill and drain plugs gaskets have high strength and corrosion resistance, and will not be broken by corrosion in seawater, so they can maintain a strong seal for a long time.
  • There are 10 blue seals in the package, which are perfect replacements for the original yellow and red seals, enough to meet your replacement needs for 2-3 times.



Product Description

Lower Unit Drain Plug Gasket
Oil Drain Plug Seal

These blue lower unit drain drain plug gaskets are OEM-quality fiber washers designed for marine use and provide a good, tight seal.

Compatible with most Mercury/Maruner outboards and all mercruiser models:

Mercury Marine 12-19183 & 12-191832 12-191833

Mallory Marine 9-60101 & 9-60102

Sierra Marine 18-2945 & 18-2244

SEI Marine 98-102-09

OBR Red Rhino MR-103

GLM 31170.

Note: Not compatible with the Japanese model.

lower unit drain screws
Mercury drain plug screw gaskets

Travis Lonaker
Reviewed in the United States on March 11, 2025
Haven’t use them yet
Brenda
Reviewed in the United States on September 6, 2024
Good
Lars Lindeby
Reviewed in the United States on August 12, 2024
OK
David Greenwell
Reviewed in the United States on March 26, 2024
Replacement washers for the drain plug for the lower unit, very good quality, 90 horse Mercury 2022
Harold H.
Reviewed in the United States on March 24, 2024
Every manufacturer recommends that you use NEW gaskets every time you change your lower unit oil. If you have as many as I do that is a lot of gaskets. Reusing them will lead to water in,oil out. Just get these and have peace of mind that you are protecting your investment.
David Holston
Reviewed in the United States on February 16, 2024
They appear to be as described. Have not used them yet.
Cecil Sawyer
Reviewed in the United States on October 18, 2024
Satisfied
Eagle Keeper
Reviewed in the United States on November 18, 2023
These gasket seals are far better than the ones I've gotten at marine stores. Way better price too!
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