SKU: 29667436710

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

Sale price$23.39 Regular price$25.99
Save 10%

Pay in installments of $6.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 5 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
K
Verified Purchase
Krystel
Bozeman, US
★★★★★ 5
Amazing!!!
Color: Turn Around, Size: Level 2
This is an amazing mental stimulation toy for my dog! And it’s a perfect one for dogs who are learning. He picked it up right away and loves it! I can’t wait to get the other ones they have. Seriously so amazing. My very active Aussie can spend 30 minutes doing this and not get bored.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
H
Verified Purchase
Haley
West Palm Beach, US
★★★★★ 5
Great for bored dogs
Color: Flip Board, Size: Level 2
Great dog puzzle! My pup loves this, he did chew the peg portion once he got them out so they can be put back in. They are tough for small dogs to get out so I think he plotted it out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
S
Verified Purchase
Steve Riggins
Phoenix, US
★★★★★ 5
Mental stimulation for dogs and fun to watch!
Color: Turn Around, Size: Level 2, Color: Turn Around, Size: Level 2
Perfect mental stimulation for dogs like that like a challenge! My very smart dog figured it out in a few seconds so I use treats that are only a little smaller than the holes to make it more challenging. She doesn’t play with toys like my other dogs so I do make an effort to offer her other outlets to get energy out. I have another dog that finds it challenging, but enjoys it, so I use smaller treats for her to make it easier. I have another dog that has a low tolerance for challenges and walks away from it or tries to chew through it- so I think the level 2 rating is fair as every dog is different! My dogs are 12 lb for reference.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
G
Verified Purchase
Gwen
Natrona Heights, US
★★★★★ 5
Great tool!
Color: Flip Board, Size: Level 2
Love this interactive toy! I purchased this for our 4 month old husky, looking for something to keep her entertained, and I was not let down! In the beginning, it took her a few good minutes to figure it out, and about a week later, she gets it done in about 2 minutes. If you've never had a husky, let me tell you, these dogs are very inquisitive! But due to her being involved with this, our older pit is now getting in on the fun! This is huge because our pit isn't amused by much! Overall, it's durable enough to withstand puppy chewing, and being carried around. It's also super easy to wipe clean as it's some sort of durable, perhaps reinforced layers of plastic. Even though the puppy figured it out, it still seems to excite her, and considering it keeps both dogs entertained and active mentally, I would absolutely recommend this to any dog owner!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 17, 2025
P
Verified Purchase
Placeholder
Belleville, US
★★★★★ 4
Trixie Flip Board Dog Enrichment Toy – Great Starter Puzzle, Best for Beginner Dogs
Color: Flip Board, Size: Level 2
I’ve been using this with a high-energy, working-breed dog, and it’s a solid beginner-level enrichment toy—especially for dogs new to puzzle feeders. What works well: • The design is simple and intuitive. My dog learned the flipping lids and sliding compartments quickly without frustration. • It’s great for short mental stimulation sessions or slowing down treat time. • The non-slip base helps keep it in place on hard floors. Things to consider: • This is a Level 1 puzzle, so once your dog understands it, they can solve it quickly. • The compartments are on the smaller side, so it works better with small treats than full meals. • Best used with supervision if your dog tends to paw or chew at toys. Best use case: Ideal for puppies, beginner dogs, or as part of a rotation of enrichment toys. More advanced dogs will likely need something more challenging to stay engaged. Bottom line: A well-designed starter puzzle that’s easy for dogs to learn and use. Not the most challenging option long-term, but a good addition to an enrichment routine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026

recommand products