SKU: 29667436710

396350 18-2656 Lower Unit Gearcase Seal O-ring Kit for Johnson Evinrude | JLM Marine

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Description

396350 18-2656 Lower Unit Gearcase Seal O-ring Kit for Johnson Evinrude | JLM MarineLower Unit Gearcase Seal O ring Kit 396350 Fits Johnson Evinrude 815 HP Outboards This Lower Unit Gearcase Seal O ring Kit is engineered to fit Johnson Evinrude 8, 9. 9, 10, and 15 HP outboard motors, covering both 2 stroke models (19742007) and 4 stroke models (19952004). It provides a complete seal solution for lower unit gearcase maintenance and rebuild applications. Direct Replacements: OMC 396350 0396350, Sierra 18 2656, and 26 00077. This kit

Lower Unit Gearcase Seal O-ring Kit 396350 – Fits Johnson Evinrude 8–15 HP Outboards

This Lower Unit Gearcase Seal O-ring Kit is engineered to fit Johnson Evinrude 8, 9.9, 10, and 15 HP outboard motors, covering both 2-stroke models (1974–2007) and 4-stroke models (1995–2004). It provides a complete seal solution for lower unit gearcase maintenance and rebuild applications.

Direct Replacements: OMC 396350 / 0396350, Sierra 18-2656, and 26-00077. This kit consolidates all essential seals and O-rings required for lower gearcase service in one package.

  • Complete seal kit for lower unit gearcase rebuild
  • Covers both 2-stroke and 4-stroke Johnson Evinrude engines
  • All components shown in product image included

Part Number Cross-Reference

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

Brand Part Number
OMC 396350, 0396350
Sierra 18-2656
Aftermarket 26-00077

Compatible Engine Models

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here's a guide to help you identify your engine's serial/model: Johnson/Evinrude Serial Number Guide.

Brand Rated HP Stroke Years
Johnson Evinrude 9.9, 10, 15 HP 2 Stroke 1974–2007
Johnson Evinrude 8, 10, 15 HP 4 Stroke 1995–2004

Technical Specifications

Specification Value
OEM Part Number 396350, 0396350
Aftermarket Part Number 18-2656, 26-00077
Application Lower Unit Gearcase Seal Kit
Compatible Brand Johnson Evinrude

Package Contents

This kit includes:

  • 1 × Lower Gearcase Seal Kit

Note: The package contains all the seals and O-rings shown in the product image.

Installation Guide

  1. Disconnect the lower unit from the outboard motor and drain all gearcase oil. Clean the exterior thoroughly to prevent contamination during disassembly.
  2. Remove the propeller, shear pin, and any external hardware securing the lower unit housing. Mark the orientation of mating surfaces for reassembly.
  3. Carefully disassemble the gearcase, noting the position of shims and thrust washers. Inspect all internal components for wear or damage.
  4. Remove all old seals and O-rings from the gearcase housing using appropriate seal removal tools. Clean all sealing surfaces with solvent and inspect for scoring or corrosion.
  5. Lubricate new seals and O-rings with marine-grade grease before installation. Install each seal square to its bore, ensuring proper orientation and seating depth.
  6. Reassemble the gearcase components in reverse order, replacing shims and washers in their original positions. Torque all fasteners to manufacturer specifications.
  7. Refill the gearcase with the correct type and quantity of gear oil through the lower fill plug. Monitor for air bubbles and ensure oil reaches the upper vent hole.
  8. Reinstall the lower unit onto the outboard motor, aligning the driveshaft and water tube carefully. Secure all mounting hardware and torque to specification.
  9. Run the engine in a test tank or on the water, checking for leaks around all seal points. Monitor gearcase temperature and shift operation for proper function.

Troubleshooting & FAQ

Q: How do I confirm this seal kit fits my specific Johnson or Evinrude engine?
A: Check the compatibility table above for your engine's HP rating, stroke type, and year range. Cross-reference your current part number (396350, 0396350, 18-2656, or 26-00077) to ensure proper fitment before ordering.

Q: How often should I replace the lower unit seals?
A: Replace lower unit seals during gearcase rebuilds or whenever you notice gear oil leaking, milky oil (indicating water intrusion), or during routine maintenance every 3–5 years depending on usage and operating conditions.

Q: What are the signs that my lower unit seals are failing?
A: Common symptoms include visible gear oil leaks around the lower unit, milky or contaminated gear oil, difficulty shifting gears, unusual noise from the gearcase, or overheating during operation.

Q: Can I reuse the old seals if they look okay?
A: No, always replace all seals and O-rings during gearcase service. Even if they appear intact, seals lose elasticity over time and may fail shortly after reassembly, leading to costly water damage or gear failure.

Q: What's the difference between this kit and the OEM Johnson/Evinrude kit?
A: This is an aftermarket replacement part built to OEM specifications using comparable materials. It provides the same seal function and fitment as the original OMC kit at a more competitive price point.

Q: Is this an OEM or aftermarket part?
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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 29667436710

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Captain
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★★★★★ 5
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Amazing product definitely recommend a little goes a long way with this suggestion stand a little away when applying lol
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Reviewed in the United States on May 3, 2026
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Petra
Charlottesville, US
★★★★★ 5
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Size: 1PCS, Color: Holo Silver
Love love LOVEEE. I feel like a fairy! You only need a short spritz to get a perfect amount of glitter. The sparkles are beautiful, rainbowy and long lasting. I sprayed some on me yesterday and it's still going strong. It dries quickly and really gets those sparkles down. Even if you rub the part of you that's been glittered, it sticks! It doesn't even have a chemically smell, it's kind of flowery? Which I totally didn't expect. However I would recommend spraying yourself outside because the glitter gets all over the house. Unfortunately (or fortunately) my floor will forever be glittered.
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Reviewed in the United States on March 29, 2025
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Kristina Lozon-Kimling
Omaha, US
★★★★★ 5
Really pretty sparkle!
Size: 1PCS, Color: Gold
I actually bought this product (one can) so I could spray this on my small area of frog ornaments and rocks by our pool. *The product does not state it is intended for craft use. I am very okay with that. Being in Arizona with sun and wind, I wasn’t sure how this would work, turns out what little I did do, (I was afraid my bottle would run out), did a nice job! Half the glitter I sprayed survived a serious thunderstorm we had one night a week or two ago! I did end up spraying some glitter on my arm, it’s really pretty, subtle, small size glitter, but definitely noticeable outside. You can make your layers as thin or thick as you like. The glitter comes out of the can like hairspray. Very faint smell that will go away within 5-10 minutes, depending on much you use.  I will definitely be purchasing more of this item in more colors in the future. 
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Reviewed in the United States on July 12, 2025
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Ruthanime
Louisville, US
★★★★★ 5
Must buy!!
Size: 1PCS, Color: Holo Silver, Size: 1PCS, Color: Holo Silver
After carefully looking at the reviews, I ended up purchasing the silver holographic body glitter spray. I immediately sprayed it on my arm, and it blasted my arm full of glitter! I wiped my arm and already dried down! I can’t wait to spray this in my hair and see how long this can last, but I’m definitely buying more with a different variety of colors. Definitely worth the money. I’m obsessed! I will say that if you don’t want glitter everywhere then spray outside.
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Reviewed in the United States on March 5, 2026
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DreamandBelieve
San Leandro, US
★★★★★ 1
Waste of money
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Barely noticeable! I bought the green glitter and let's just say there's Very little glitter! Pretty much non-existent. Definitely not worth $10 and It's not returnable. For $10 I would have expected something noticeable
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