SKU: 5378978664

8M0057716 Gearcase Seal Kit for Mercury 135HP 150HP EFI | JLM Marine

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Description

8M0057716 Gearcase Seal Kit for Mercury 135HP 150HP EFI | JLM Marine8M0057716 Gearcase Seal Kit for Mercury 135HP 150HP EFI JLM Marine This gearcase seal kit is engineered to fit Mercury 135HP and 150HP EFI outboard engines, providing comprehensive sealing components for the gear housing and driveshaft assembly. Designed for both standard and counter rotation applications, this kit ensures reliable performance across multiple Mercury models and serial number ranges. This aftermarket replacement directly cross

8M0057716 Gearcase Seal Kit for Mercury 135HP 150HP EFI | JLM Marine

This gearcase seal kit is engineered to fit Mercury 135HP and 150HP EFI outboard engines, providing comprehensive sealing components for the gear housing and driveshaft assembly. Designed for both standard and counter rotation applications, this kit ensures reliable performance across multiple Mercury models and serial number ranges.

This aftermarket replacement directly cross-references to OEM part number 8M0057716, offering a cost-effective solution for maintaining your lower unit's integrity and preventing water intrusion.

  • Complete seal kit for Mercury EFI gearcase assemblies
  • Fits both standard and counter rotation configurations
  • Suitable for gear housing and driveshaft maintenance

Part Number Cross-Reference

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

Brand Part Number
Mercury 8M0057716

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.

Brand Model Rated HP Serial Number Range Component Notes
Mercury 135HP EFI 135HP 2B131942 & Up Gear Housing, Driveshaft Standard/Counter Rotation
Mercury 150HP EFI 150HP 1B905505 & Up Gear Housing, Driveshaft Standard/Counter Rotation
Mercury 150HP EFI Sea Pro 150HP 2B139139 & Up Gear Housing, Driveshaft Standard/Counter Rotation

Technical Specifications

Specification Value
OEM Part Number 8M0057716
Application Gearcase Seal Kit
Compatible Brand Mercury
Compatible Models 135HP EFI, 150HP EFI, 150HP EFI Sea Pro
Configuration Standard and Counter Rotation
Component Coverage Gear Housing, Driveshaft

Package Contents

This gearcase seal kit includes all necessary sealing components required for servicing the gear housing and driveshaft assembly on compatible Mercury EFI outboards.

Installation Guide

  1. Preparation: Disconnect the battery and remove the lower unit from the outboard motor following your service manual's instructions.
  2. Disassembly: Drain the gear oil completely and remove the propeller shaft assembly. Carefully extract the driveshaft and note the orientation of all components.
  3. Seal Removal: Remove all old seals, O-rings, and gaskets from the gear housing and driveshaft using appropriate seal removal tools. Clean all sealing surfaces thoroughly with solvent and inspect for damage.
  4. Surface Preparation: Ensure all mating surfaces are free of debris, corrosion, and old seal material. Use a plastic scraper to avoid damaging aluminum surfaces.
  5. New Seal Installation: Lubricate new seals with marine-grade grease before installation. Install seals carefully using the appropriate driver or socket to avoid cocking or damage.
  6. Reassembly: Reinstall the driveshaft, propeller shaft, and all components in reverse order. Torque all fasteners to manufacturer specifications.
  7. Refill & Test: Refill the lower unit with the correct grade and quantity of gear oil. Reinstall the lower unit, check for leaks, and perform a water test to verify proper operation.

Troubleshooting & FAQ

Q: How do I confirm this seal kit fits my Mercury outboard?
A: Verify your engine's serial number against the compatibility table above. Mercury 135HP and 150HP EFI models with serial numbers 2B131942 & up (135HP), 1B905505 & up (150HP), and 2B139139 & up (150HP Sea Pro) are compatible. Cross-check with your parts diagram to ensure the component matches.

Q: How often should I replace the gearcase seals?
A: Replace gearcase seals whenever the lower unit is disassembled for service, or immediately if you notice milky gear oil (indicating water intrusion), oil leaks around the propeller shaft, or loss of gear oil level. Regular inspection during seasonal maintenance is recommended.

Q: What tools do I need to install this seal kit?
A: You'll need seal drivers or appropriately sized sockets, a seal puller or pick set, torque wrench, gear oil pump, marine-grade grease, and basic hand tools. A service manual for your specific model is highly recommended for torque specifications and assembly sequences.

Q: Can I use this kit on both standard and counter rotation lower units?
A: Yes, this seal kit is designed for both standard and counter rotation configurations on the compatible Mercury EFI models listed. The sealing components are identical for both rotation types.

Q: What are signs of failing gearcase seals?
A: Common symptoms include milky or contaminated gear oil, visible oil leaks near the propeller or driveshaft, loss of gear oil between services, overheating of the lower unit, or unusual noise during operation. Address these issues immediately to prevent bearing and gear damage.

Q: Is this an OEM part or 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.
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: 5378978664

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K
Verified Purchase
Kindle Customer
Lowell, US
★★★★★ 5
Phenomenal book, one major criticism
Format: Kindle
Great book. Dalio does a remarkable job seeing the bigger picture and providing confidence through historical events/ever repeating cycles that you can predict at a high level what is coming next for a given country or the world and plan accordingly. The corkscrew of evolution analogy is a perfect one, where the human race has up and down cycles but always trends up longer term thanks to technological innovation. My one criticism is he speaks out of both sides of his mouth in one instance, presumably because he doesn’t want to upset any high ranking politicians or leaders he may be friends with, which I found to be disappointing. On the one hand, he notes at the start of the book that no two democracies have waged war with each other, wars have only been fought between dictators/police states and democracies or just dictators/police states. Then later on when discussing China, he all but excuses and rationalizes their increasingly authoritarian state, as seen by Xi crowning himself leader until death and abolishing the precedent of 2 5 year term limits as of 2018. He blesses the Chinese approach of a few rulers knowing what’s best for all, as if those rulers are acting in the broader interest of Chinese people, and that’s an acceptable alternative to democratic rule. He cites the recent video game ban as having merit or at least being understandable, suggesting that he thinks the ends can justify the means. All the while there’s no mention of the atrocities of Mao under this authoritarian type of rule, no mention of the Muslim genocide going on now, the suppression of free speech and jailings and beating and murders of those that oppose the current regime, no mention of internet censorship, etc. To bring the criticism full circle, he doesn’t link his first point on wars and authoritarians always being involved in them, with the fact that China is an authoritarian state and therefore it’s rise threatens the free world and human progress. Ironically, he does correctly acknowledge China’s opening up to market and establishment of capitalist principles for rocketing them toward the US in terms of power, while refuses to critique the political system despite its history of failings, violence and pain. Russia invading Ukraine couldn’t drive this point (ie the civil or political system being as important as the economic system to the long term success of a country and world peace) home any harder.
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Reviewed in the United States on March 12, 2022
H
Verified Purchase
Harold Hall
Fort Morgan, US
★★★★★ 5
Can be effectively used as a working tool for the predictor (not just for investments)
Format: Hardcover
This is one of the best works on the declining economy and US, associated possible revolution/civil war and later major power war, that is presented in a clear, convincing and replicable way. Kudos to Dalio!! More importantly, the contents of the book can be used to predict upcoming events rather than just perceiving the world on fire with several likely upcoming breakouts (e.g., war with China over Taiwan, the likely loss of our reserve currency, the unsustainable and uncontrollable burgeoning national debt which grows by a trillion USD every 100 days). The author makes a valid case that significant events are moving very rapidly and, for the rest of the 2020s, things are going to get a whole lot worse for the non-elites in our society. Of note, the book was actually written in 2020, published the next year, which then allows the readership now in 2025 to verify the accuracy the observations and predictions. Right on target!
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Reviewed in the United States on June 4, 2025
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Verified Purchase
Peter Ganavazos
Omaha, US
★★★★★ 5
Great book for understanding how the world works!
Format: Hardcover, Format: Hardcover
Dalio has a unique perspective on the topic of the changing world order. He is a successful businessman who has spent his career analyzing economic trends and patterns, and this book is a culmination of his findings. His writing is clear and concise, making complex economic concepts easy to understand. One of the best features of the book is its organization. The book is broken down into 14 chapters, each focusing on a different aspect of the changing world order. Dalio starts with the big picture, examining the major forces driving the changing world order, before delving into the specifics of each major empire, including the Dutch, British, American, Chinese, Soviet, and Japanese empires. Ultimately, he brings everything full circle by discussing the changing world order today and what the future may hold. Another great aspect of the book is the way that Dalio weaves history and economics together. He doesn't just present economic theories in a vacuum; he uses real-world examples to show how they have played out over time. For example, in Chapter 5, he discusses the Great Depression and how it shaped the changing world order in the 1930s and 1940s. He also uses the rise of populism in Chapter 7 to illustrate how economic inequality can lead to political instability. Overall, I would highly recommend "The Changing World Order" to any intelligent human interested in economics, history, or politics. This book is a must-read for anyone who wants to understand the forces shaping our world today and what the future may hold. As Dalio himself puts it, "understanding how the world works is essential if you want to accomplish your goals and live a fulfilling life." Here are some key takeaways from the book: The changing world order is driven by three major forces: the changing relative powers of countries, the changing relative productivity of countries, and the changing values of countries. The rise and fall of empires is a natural part of the changing world order. Each empire has its own unique characteristics, but they all follow a similar pattern of rise, peak, and decline. The post-World War II order was built on the idea of free trade and cooperation between nations. However, this order is now under threat due to rising nationalism and protectionism. China is currently on the rise and is likely to become the world's dominant economic power in the coming decades. However, although this rise is not guaranteed, and there are many challenges that China will need to overcome, the US needs to step up its game on several fronts to compete. The future of the world order is uncertain, but there are a few things we can say with some degree of certainty. For example, the rise of automation and artificial intelligence is a hot topic today likely to have a major impact on the global economy in the coming years. Overall, "The Changing World Order" is a well-written and informative book that is sure to appeal to a wide range of readers. Whether you're a history buff, an economics nerd, or just someone who wants to better understand the world we live in, this book is well worth your time. As Dalio himself says, "The more you know, the more you'll understand, and the more you'll be able to make informed decisions about your own life." Five stars from me, give it a read!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2023
J
Verified Purchase
Jayme
Battle Creek, US
★★★★★ 5
10/10 Recommend
Format: Hardcover
I took Jeffrey Sachs's Globalization class on EDX Academy and somehow stumbled upon this book in between class and finding books around the subject. I watched his youtube video that generalizes the book and was blown away by how my current class I was taking aligned with it. This book is an easy read, and especially for those who aren't well-versed about world history and world economics. I will admit that I do love history, and am learning economics, so this book was a beautiful way merge all these timelines together. The book breaks down and summarizes key points in world history and economics to make points to get the message across each chapter. Font size is great! Might even be considered larger compared to other books. The only thing I wish this book provided was thicker paper in the physical book itself, especially for the hardcover version. If Ray Dahlio ever comes out with a special edition of this with a higher quality paper, I would gladly purchase it for my collection.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2025
K
Verified Purchase
Kathy
Pawtucket, US
★★★★★ 5
Excellent book – exciting and educational!
Format: Paperback
This book is a true gem! It took us on a journey back in time and revealed the real story of the Olympic Games in a simple, vivid, and perfectly understandable way for children. My young students loved it, and I found it extremely useful and well-written. Ideal for kids who love history, sports, or simply want to learn something different in a fun way. Highly recommended!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2025

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