Drain Screw Gasket - Fits Mercury/Mercruiser Outboards & Sterndrives

Vendor: JLM Marine
Availability: In Stock
Product Type: Gasket
$12.49
$12.49
Subtotal: $12.49

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Drain Screw Gasket - Fits Mercury/Mercruiser Outboards & Sterndrives - JLM Marine Boat Parts Limited

Drain Screw Gasket - Fits Mercury/Mercruiser Outboards & Sterndrives

$12.49

Drain Screw Gasket - Fits Mercury/Mercruiser Outboards & Sterndrives

$12.49

Drain Screw Gasket - Fits Mercury/Mercruiser Outboards & Sterndrives (Replaces 26-830749, 26-8M0204693)

This drain screw gasket is designed for a wide range of Mercury/Mercruiser engines. It is compatible with outboard engines from 40 to 600 HP (2-Stroke & 4-Stroke, 1990–Present) and all models of sterndrive and inboard engines from 1994 to the present.

This part is a direct replacement for Mercury OEM part numbers 26-830749 and 26-8M0204693.

  • Made from a durable, tear-resistant rubber-coated stainless steel washer.
  • Designed for use with 3/8"-16 drain/fill screws.
  • Ensures a proper seal to prevent gearcase lubricant leaks.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number Superseded By
Mercury 26-830749 26-8M0204693
Mercury 26-8M0204693

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Mercury/Mercruiser Outboard Engines

Brand Model Rated HP Stroke Years OEM Part No. Notes
Mercury 40-50-60 EFI 40-60 4-Stroke 1C000001-1C050251 26-830749/26-8M0204693
Mercury 40-50-60 EFI 40-60 4-Stroke 1C050252-1C453839 26-830749/26-8M0204693
Mercury 40-50-60 EFI 40-60 4-Stroke 1C453840-Current 26-830749/26-8M0204693
Mercury 70-90 EFI 70-90 4-Stroke 2B095049-Current 26-830749/26-8M0204693
Mercury 75-90-115 Optimax 75-115 2-Stroke 1B417702-Current 26-830749/26-8M0204693 DFI Models
Mercury 115 EFI 115 4-Stroke 2B095049-Current 26-830749/26-8M0204693
Mercury 135-150-175-200 Verado 135-200 4-Stroke All 26-830749/26-8M0204693 4-Cylinder models
Mercury V-135 DFI 135 2-Stroke 1B417702-Up 26-830749/26-8M0204693 2.5L
Mercury V-150 DFI 150 2-Stroke 1B417702-Up 26-830749/26-8M0204693 2.5L
Mercury V-150 EFI 150 4-Stroke 1B227000-Up 26-830749/26-8M0204693 2.5L
Mercury V-175 DFI 175 2-Stroke 1B417702-Up 26-830749/26-8M0204693 2.5L
Mercury V-200 EFI 200 4-Stroke 1B227000-Up 26-830749/26-8M0204693 2.5L
Mercury 175-300 V6 & V8 175-300 4-Stroke All 26-830749/26-8M0204693 3.4L V6 & 4.6L V8 Torpedo & Torque Master
Mercury 200-300 Verado 200-300 4-Stroke All series 26-830749/26-8M0204693 6-cylinder models
Mercury 250-300 V8 Racing 250-300 4-Stroke All 26-830749/26-8M0204693 Sport Master, Torpedo & Torque Master
Mercury 450 V8 Racing 450 4-Stroke All 26-830749/26-8M0204693 Sport Master & Torpedo

Mercury/Mercruiser Sterndrive & Inboard Engines

Brand Model Rated HP Stroke Years OEM Part No. Notes
MerCruiser Alpha One (Gen.II) All 4-Stroke 1996-1997 26-830749/26-8M0204693 0F680000-0K999999
MerCruiser Bravo One/Two/Three All 4-Stroke 0W250000 & Up 26-830749/26-8M0204693 All variants including X and XR
MerCruiser Bravo XR Sportmaster All 4-Stroke 0M906878 & Up 26-830749/26-8M0204693
MerCruiser NXT1 Drive All 4-Stroke 0M954569 & Up 26-830749/26-8M0204693
MerCruiser SSM Six/Seven All 4-Stroke All 26-830749/26-8M0204693
MerCruiser HI Performance Transom All 4-Stroke 0W150003 & Up 26-830749/26-8M0204693
MerCruiser INTEGRATED Transom All 4-Stroke 0M052768 & Up 26-830749/26-8M0204693
MerCruiser Zeus 3000 All 4-Stroke All Series 26-830749/26-8M0204693 All production ranges

Technical Specifications

Specification Value
Product Type Drain Screw Gasket/Seal
Installation Used with 3/8"-16 drain/fill screw
Housing Material Rubber-coated stainless steel washer
Housing Color Yellow
Fitting Type Washer/Gasket
Thread Size For 3/8"-16 drain screws
Other Technical Attributes Tear-resistant gearcase drain screw seal

Package Contents

  • 1 x Drain Screw Gasket (Replaces 26-8M0204693)

Explosion Diagram

Explosion Diagram

Installation Guide

  1. Position a drain pan under the gearcase drain screw.
  2. Using a large flathead screwdriver, carefully loosen and remove the lower drain/fill screw.
  3. Inspect the old gasket on the magnetic tip of the screw for wear or damage and discard it.
  4. Clean the screw and the gearcase sealing surface, ensuring they are free of old gasket material or debris.
  5. Slide the new yellow gasket onto the drain screw.
  6. Reinstall the screw with the new gasket and tighten it until it is snug. Do not overtighten.
  7. Proceed with gear lube filling from the bottom hole as per your engine's service manual.

Troubleshooting & FAQ

Q: How do I confirm this gasket fits my specific Mercury engine?

A: This gasket fits most Mercury/Mercruiser outboards (40-600 HP, 1990-Present) and sterndrives (1994-Present). To be certain, please check the compatible engine model tables on this page or cross-reference your existing part number with 26-830749 or 26-8M0204693.

Q: What is the difference between this yellow gasket and older black ones?

A: This yellow, rubber-coated stainless steel washer (26-8M0204693) directly replaces the older part number 26-830749. It is designed to be more tear-resistant and provide a superior seal for your gearcase.

Q: How often should I replace my drain screw gasket?

A: It is best practice to replace the drain screw gaskets every time you change your gearcase lube, which is typically done annually or every 100 hours of operation, whichever comes first.

Q: OEM vs. Aftermarket?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

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