Description
Comparison points and tradeoffs
When comparing Lower Unit Grease Gaskets, Gearcase Lube Drain Screw Washer 26-830749, Gearcase Drain Plug Seal for Mercury 115FS 150 EFI Four Stroke and Mariner Outboards and MerCruiser Stern Drives with other Oil Drain Plugs options, use this source-backed detail as the primary discriminator: Made of high quality material with rubber coated, prevent gear oil leaking.
Use this second fact to evaluate the tradeoff: Category: Replacement Parts / Engines & Engine Parts / Engine Parts / Oil Drain Plugs. A third point to compare across alternatives is: Made of high quality material with rubber coated, prevent gear oil leaking. For use on the 3/8-16 drain/fill screw holes in outboard and stern drive gearcases.
Alternative-selection boundary
Choose an alternative when its stated identifiers, application, package, or specifications better match the requirement; no unverified competitor claim is introduced here.
Complete source-backed product details
Product Description
HIGH-QUALITY MATERIALS
Made of high quality material with rubber coated, prevent gear oil leaking.
For use on the 3/8-16 drain/fill screw holes in outboard and stern drive gearcases.
PRE-SALE REMINDER
Always double check to make sure the washer has been secured when reinstalling the drain screw. Water could infiltrate the gearcase without it and cause catastrophic damage to the gearcase.
ABOUT SPURICK
- Forged directly from the belief that better products for Boat Supplies, and all other Outdoor Power Equipment is possible, SPURICK Parts combines attention to detail and a “Let Users Get Benefits” attitude.
- We give repair professionals and boat owners greater freedom to fix boat supplies by focusing on solutions that save time and money and increase convenience and reliability.
- We have branches in Europe and Australia, which allows our customers to spread across most countries.
SPURICK SLOGAN
- LET USERS GET BENEFITS
Source product highlights
About this item
- Made of high quality material with rubber coated, prevent gear oil leaking. For use on the 3/8-16 drain/fill screw holes in outboard and stern drive gearcases.
- Gearcase gear lube drain screw washer 830749 is rubber coated stainless steel that fits for Mercury and Mariner outboards and all MerCruiser stern drives with 3/8-16 gearcase drain/fill screw holes.
- Always double check to make sure the washer has been secured when reinstalling the drain screw. Water could infiltrate the gearcase without it and cause catastrophic damage to the gearcase.
- Keep spares on hand to assure placement after changing gear lube in gearcase.This is the exact seal for its gearcase drain, filler, and vent screws.
- Change this every time you change your gearcase oil. It’s designed to “crush” under torque so it’s a one time use washer. Replacement gaskets for the Mercury’s lower unit drain and vent plugs.




Ken –
Thes work ok if you double-them up. Not the best quality but will get you by.
keith steuber –
I leave my boat in the water all summer , this is only seal fit for long term water exposure
Hogate –
Gaskets are a bit sloppy around the drain/fill plug of a merc 150 pro xs. Seems like they will seal fine though, we’ll find out next boating season.
Edward B. –
Fast shipping , easy to install , and keeps water from my gear case.
steve butland –
Exactly as advertised!
chris lacey –
Exactly what I needed for the job.
lvh1 –
USED FOR LOWER UNIT ON 150 MERCURY 4-STROKE. 2016 YEAR MODEL.
Customer –
These are as good as OEM. Excellent