Best Rear Main Sealer: Remarkable Fantastic Picks Now

Finding the best rear main sealer can save you from costly engine repairs. A rear main seal prevents oil leaks between your engine and transmission.
Dealing with oil leaks can be frustrating. It’s essential to address them promptly to avoid major engine damage. Rear main sealers offer a practical solution for sealing leaks effectively. With many options available, choosing the right product can be daunting.
Products like Bar’s Leaks Rear Main Seal Repair and BlueDevil Rear Main Sealer are popular choices. Dorman and FEL-PRO also offer reliable seal sets compatible with various vehicle models. These options provide effective solutions for different needs and budgets. This guide will explore these products, helping you make an informed decision for your vehicle. Let’s dive into their features and benefits.
Bar’s Leaks Rear Main Seal Repair

The Bar’s Leaks Rear Main Seal Repair, 16.9 oz. is ideal for vehicle owners experiencing leaks in their rear main seal. DIY enthusiasts who prefer solving automotive issues without the hassle of visiting a mechanic will find this product invaluable. It’s perfect for those who want a cost-effective solution to prevent further damage to their vehicle’s engine.
Pros:
- Easy to use with simple instructions
- Cost-effective compared to professional repairs
- Quick solution to prevent engine damage
- Compatible with all types of motor oil
Cons:
- May not be a permanent fix for severe leaks
- Effectiveness can vary depending on engine condition
- Requires regular monitoring after application
The Bar’s Leaks Rear Main Seal Repair boasts a simple application process that allows users to add it directly to their motor oil, eliminating the need for any special tools or mechanical expertise. This feature is especially beneficial for those who want to save on repair costs while ensuring their engine runs smoothly.
With its advanced formulation, this product works to condition and restore seals, effectively stopping leaks and preventing future ones. Users can enjoy a quieter and more efficient engine performance, reducing the risk of engine damage and extending the lifespan of their vehicle. The Bar’s Leaks Rear Main Seal Repair is a practical solution for maintaining vehicle health without breaking the bank.
To buy this product, click here.
Bluedevil Products Rear Main Sealer

The BlueDevil Products 00234 Rear Main Sealer is ideal for car enthusiasts and everyday vehicle owners who are experiencing oil leaks from the rear main seal. This product is perfect for those who want an efficient and cost-effective solution to seal leaks without the need for expensive repairs or mechanical expertise.
Pros:
- Easy to use with no mechanical skills required
- Cost-effective solution compared to professional repairs
- Compatible with all gasoline and diesel engines
Cons:
- May not work for severely damaged seals
- Temporary fix rather than a permanent solution
The BlueDevil Products 00234 Rear Main Sealer offers a user-friendly application process, allowing vehicle owners to address oil leaks without visiting a mechanic. Simply add the product to your engine oil, and it begins to work by revitalizing the seals to stop leaks. This ease of use makes it accessible for anyone looking to maintain their vehicle’s performance without professional assistance.
In addition to its simplicity, the sealer is designed to work with a wide range of engines, including both gasoline and diesel. This versatility ensures that no matter the type of vehicle you own, you can benefit from the product. By preventing oil leaks, the sealer helps maintain engine health and efficiency, ultimately extending the lifespan of your vehicle and reducing potential repair costs.
To buy this product, click here.
Dorman 635-518 Engine Rear Main Seal Cover Compatible With Select Models

The Dorman 635-518 Engine Rear Main Seal Cover is an ideal purchase for car enthusiasts and professional mechanics who are looking for a reliable and durable replacement for specific vehicle models. If you are someone who prioritizes quality and wants to ensure your engine runs smoothly without leaks, this product is designed for you.
Pros:
- High-quality construction ensures durability and long-lasting performance.
- Easy installation with a precise fit for select vehicle models.
- Cost-effective solution compared to original equipment parts.
Cons:
- Compatibility is limited to specific models, requiring confirmation before purchase.
- No included instructions, which might be challenging for DIY installers.
The Dorman 635-518 Engine Rear Main Seal Cover is designed with precision to offer a perfect fit for select vehicle models, ensuring that you won’t have any issues with leakage. The durable materials used in its construction mean that it will withstand the rigors of engine operation, providing peace of mind to users looking for reliability.
In addition, the lightweight design of the seal cover, weighing just 1.99 pounds, makes it easy to handle during installation. This, combined with its compact dimensions of 11.1 inches in width and 11.4 inches in length, ensures that it fits seamlessly into the engine compartment, eliminating potential hassles during the installation process.
To buy this product, click here.
Fel-pro Bs 40748 Rear Main Seal Set

The FEL-PRO BS 40748 Rear Main Seal Set is designed for automotive enthusiasts and professional mechanics seeking reliable and high-quality components for engine maintenance. This item is ideal for those who are looking to maintain the integrity of their vehicle’s engine by preventing oil leaks and ensuring optimal performance.
Pros:
- Durable construction for long-lasting performance
- Precision-engineered for perfect fit
- Assorted color options for versatility
- Easy installation process
Cons:
- May not fit all vehicle models
- Requires proper tools for installation
The FEL-PRO BS 40748 Rear Main Seal Set boasts a precision-engineered design that ensures a perfect fit for compatible vehicles. This eliminates the hassle often associated with engine maintenance, allowing users to achieve a leak-free seal with ease. The durable construction of this seal set guarantees long-lasting performance, reducing the need for frequent replacements and providing peace of mind for vehicle owners.
One of the standout features of this seal set is its easy installation. Designed with the user in mind, it offers a straightforward process that can be completed with standard tools, making it accessible for both DIY enthusiasts and professional mechanics. Additionally, the assorted color options provide a level of versatility, allowing users to match or complement their vehicle’s engine aesthetics. Overall, the FEL-PRO BS 40748 Rear Main Seal Set is a reliable choice for those committed to maintaining their vehicle’s performance and longevity.
To buy this product, click here.
Fel-pro Bs 40603 Rear Main Seal Set

The FEL-PRO BS 40603 Rear Main Seal Set is an ideal choice for automotive enthusiasts and professional mechanics who are looking for a reliable and durable solution to prevent oil leaks in their vehicles. If you frequently perform maintenance on cars or trucks and need a dependable rear main seal, this product is designed for you.
Pros:
- High-quality materials for long-lasting performance
- Easy installation with no special tools required
- Compatible with a wide range of vehicle makes and models
Cons:
- Assorted colors may not match all preferences
- Specific dimensions may not fit every vehicle model
The FEL-PRO BS 40603 Rear Main Seal Set features a robust construction, ensuring its durability and effectiveness in preventing oil leaks. Made from premium materials, this seal set is designed to withstand the demands of various driving conditions, providing peace of mind to users who prioritize the longevity of their vehicles. Its compatibility with numerous vehicle models makes it a versatile choice for those maintaining multiple vehicles.
Another notable feature is its easy installation process. The design allows users to replace the seal without needing specialized tools, making it accessible for both professionals and DIY enthusiasts. This feature not only saves time but also reduces the cost of maintenance, as users can perform the replacement themselves without needing to pay for professional services. Overall, the FEL-PRO BS 40603 offers a blend of reliability, ease of use, and versatility, making it a valuable component in any automotive maintenance toolkit.
To buy this product, click here.
Fel-pro Bs 40685 Rear Main Seal Set

The FEL-PRO BS 40685 Rear Main Seal Set is an essential component for automotive enthusiasts and professional mechanics who demand reliability and precision in their engine maintenance. Ideal for those dealing with oil leaks or engine overhauls, this seal set ensures a secure fit and long-lasting performance. Whether you’re a DIY car owner or a seasoned mechanic, this product is designed to meet your needs for quality and durability.
Pros:
- High-quality materials ensure durability and longevity.
- Precision-engineered for a perfect fit, reducing the risk of leaks.
- Trusted brand with a reputation for excellence in automotive parts.
Cons:
- Limited color options as it comes in assorted colors.
- May require professional installation for those unfamiliar with engine repairs.
The FEL-PRO BS 40685 Rear Main Seal Set stands out with its assorted color options, adding a unique touch to your engine components. Although color may not be a primary concern, it reflects the brand’s attention to detail. With dimensions of 1.0 inch in height, 5.0 inches in width, and length, along with a weight of just 0.1 pounds, this seal set is designed for ease of handling and installation. Its compact size does not compromise on performance, making it a convenient choice for various engine models.
One of the most significant benefits of the FEL-PRO BS 40685 Rear Main Seal Set is its high-quality construction. This ensures that it can withstand the demanding conditions of engine operation, providing peace of mind to users. The precision engineering of this seal set means it fits snugly, effectively preventing oil leaks and maintaining engine integrity. Furthermore, being from a trusted manufacturer like Fel-Pro guarantees that you’re investing in a product with a proven track record of reliability and performance.
To buy this product, click here.
Fel-pro Bs 40637 Rear Main Seal Set

The FEL-PRO BS 40637 Rear Main Seal Set is an ideal purchase for automobile enthusiasts and professional mechanics who seek a reliable and durable solution for engine sealing. This seal set is perfect for anyone needing to replace a worn or faulty rear main seal in their vehicle to prevent oil leaks and ensure optimal engine performance.
Pros:
- High-Quality Materials ensure long-lasting durability.
- Easy Installation process, saving both time and effort.
- Comprehensive Set includes everything needed for a complete repair.
- Precision Engineering for excellent fit and performance.
Cons:
- Limited Color Options may not suit all aesthetic preferences.
- Specific Fitment may not be compatible with all vehicle models.
The FEL-PRO BS 40637 Rear Main Seal Set boasts remarkable features that cater to the needs of its users. The set is crafted from high-quality materials, ensuring durability and resistance against wear and tear. This means users can enjoy peace of mind knowing that their engine is well-protected and less prone to leakage issues, ultimately contributing to the longevity of the vehicle.
Furthermore, the easy installation process is another significant benefit, making it suitable for both seasoned mechanics and DIY enthusiasts. With comprehensive instructions and a complete set of necessary components, users can efficiently replace their rear main seal without the need for additional tools or parts. The precision engineering of the seal set ensures a perfect fit, optimizing the seal’s effectiveness and enhancing the overall performance of the engine.
To buy this product, click here.
Fel-pro Bs 30138 Rear Main Seal Set

The FEL-PRO BS 30138 Rear Main Seal Set is an essential component for those who own or work on vehicles. Ideal customers for this item are mechanics, car enthusiasts, and DIYers who are looking for a reliable and high-quality rear main seal to ensure their vehicle operates smoothly and efficiently. Those who prioritize performance and durability will find this product particularly beneficial.
Pros:
- Durable construction ensures longevity.
- Easy installation process saves time.
- High compatibility with various vehicle models.
Cons:
- Limited color options may not suit all preferences.
- Requires specific tools for installation.
The FEL-PRO BS 30138 Rear Main Seal Set boasts several impressive features that contribute to its high performance. The assorted color options provide a degree of customization, although functionality remains its primary focus. Its compact dimensions—with a height of 0.5 inches, width of 4.0 inches, and length of 7.9 inches—make it easy to handle and install, even in tight spaces. Additionally, its lightweight design at 0.1 pounds ensures that it doesn’t add unnecessary bulk to the vehicle.
One of the standout benefits of the FEL-PRO BS 30138 Rear Main Seal Set is its durability. Designed to withstand the rigors of daily driving, it offers long-term reliability, reducing the frequency of replacements and providing peace of mind to users. The easy installation process means that even those with minimal mechanical experience can successfully replace their rear main seal, making it an accessible option for a wide range of users. Furthermore, its high compatibility with various vehicle models makes it a versatile choice, ensuring that it meets the needs of different types of vehicles efficiently.
To buy this product, click here.
Applianpar Engine Crankshaft Rear Main Seal

The ApplianPar Engine Crankshaft Rear Main Seal is an essential component for vehicle owners who prioritize maintaining the performance and longevity of their engines. This product is ideal for car enthusiasts and professional mechanics who frequently work with models such as the Cmax, Escape, Explorer, Edge, Focus, Fusion, Taurus, Transit Connect, Ranger, MKZ, MX5 Miata, 3, 5, 6, CX7, Tribute, Mariner, and Milan. If you own or service these vehicles, this seal is designed specifically for your needs, ensuring a perfect fit and reliable performance.
Pros:
- High-quality materials ensure durability and long-lasting performance.
- Perfect fit for a wide range of popular vehicle models.
- Easy installation reduces downtime and labor costs.
Cons:
- Limited compatibility to specific vehicle models.
- Requires professional installation for optimal results.
The ApplianPar Engine Crankshaft Rear Main Seal offers several features that provide significant benefits to its users. Its construction from high-quality materials guarantees a robust and durable seal that withstands the pressures and heat of engine operation, reducing the risk of leaks and subsequent engine damage. This feature is crucial for maintaining engine integrity and ensuring the vehicle operates smoothly over time.
Another notable feature is its perfect fit for numerous vehicle models, from the Cmax to the Milan. This precise compatibility ensures that users do not have to worry about the seal fitting incorrectly, which can lead to oil leaks and engine wear. By providing an easy and secure fit, the product minimizes potential issues and offers peace of mind to users who rely on their vehicles for daily commuting or professional use. Additionally, the seal’s easy installation means that users can replace their old seals quickly, minimizing vehicle downtime and reducing labor costs, which is particularly beneficial for professional mechanics managing multiple vehicles.
To buy this product, click here.
Fel-pro Bs 40535 Rear Main Seal Set

The FEL-PRO BS 40535 Rear Main Seal Set is an essential component for car enthusiasts and professional mechanics who are looking to maintain the integrity of their vehicle’s engine. Ideal for those who need a reliable and high-quality seal to prevent oil leaks, this product is perfect for individuals who prioritize performance and durability in their automotive repairs.
Pros:
- Durable construction ensures longevity
- Easy to install, saving time and effort
- Compatible with a wide range of vehicles
- Prevents oil leaks, maintaining engine health
Cons:
- Limited color options, only available in assorted colors
- May not fit all vehicle models, check compatibility before purchasing
The FEL-PRO BS 40535 Rear Main Seal Set offers a range of features that make it a valuable addition to any mechanic’s toolkit. Its durable construction means that it can withstand the rigors of engine operation, providing a long-lasting solution to oil leaks. This durability ensures that users can depend on it for maintaining optimal engine performance, reducing the need for frequent replacements.
Additionally, the easy installation process of this seal set is a significant benefit for both professionals and DIY enthusiasts. It allows users to complete repairs efficiently, minimizing downtime and the need for specialized tools. With its compatibility across a wide range of vehicle models, this seal set is versatile, making it a practical choice for those who work with multiple types of vehicles. Overall, the FEL-PRO BS 40535 not only enhances engine performance but also offers convenience and reliability.
To buy this product, click here.
Frequently Asked Questions
What Is The Best Rear Main Seal Repair Product?
Bar’s Leaks Rear Main Seal Repair is a popular choice. It effectively stops leaks and is easy to use. BlueDevil Products 00234 is another reliable option. Both products are known for their effectiveness and ease of use, making them top choices for sealing leaks.
How Does Bluedevil Rear Main Sealer Work?
BlueDevil Rear Main Sealer restores seals to their original size. It works by conditioning rubber seals, preventing leaks. This sealer is compatible with various engines and is easy to apply, ensuring a quick and effective solution to seal leaks.
Are Fel-pro Seal Sets Reliable?
Yes, FEL-PRO rear main seal sets are highly reliable. They are designed for durability and performance. With multiple options like BS 40748 and BS 40603, these sets are widely trusted for their quality and fit. They provide a long-lasting seal for different engine models.
Can Dorman Seal Covers Fit Any Vehicle?
Dorman 635-518 Engine Rear Main Seal Cover fits select models only. It’s crucial to check compatibility with your vehicle. These covers are known for their durability and precision fit, offering a reliable solution for maintaining engine integrity.
Is Applianpar Seal Suitable For Multiple Car Models?
Yes, ApplianPar Engine Crankshaft Rear Main Seal fits various models. It is compatible with cars like the Ford Escape, Explorer, and others. Known for its versatility and reliable performance, it ensures a proper seal across different vehicle types.
How To Choose The Right Rear Main Seal Set?
Consider compatibility and quality when choosing a rear main seal set. Brands like FEL-PRO and Dorman offer reliable options. Ensure the set matches your vehicle model for the best fit and performance. Quality materials and a good reputation are key factors.
Conclusion
Choosing the right rear main sealer is crucial for engine health. Many options are available to suit different needs. Bar’s leaks rear main seal repair is a trusted solution for many. Bluedevil products 00234 offers reliable sealing in a smaller package.
Dorman 635-518 provides a specific fit for select models. Fel-pro has multiple options like the bs 40748 and bs 40603, each designed for durability. The applianpar engine crankshaft rear main seal is versatile for various models. Consider your vehicle’s requirements and budget when deciding.
Each product has its unique strengths. An informed choice can save time and prevent costly repairs. Remember, regular maintenance is key to a well-functioning vehicle. Investing in a quality rear main sealer ensures peace of mind. Keep your engine running smoothly and efficiently.
Your vehicle deserves the best care possible. Make the right choice today.

Hi Friends, I’m SealerMrinal, your go-to expert for all things sealing. With years of hands-on experience across a wide range of materials—concrete, wood, metal, and more—I bring deep knowledge and practical insights into every sealing project. On my website, I share expert tips, proven techniques, and product recommendations to help you get the best results. Whether you’re tackling a DIY project or seeking professional-grade advice, I’m here to guide you through the art and science of effective sealing.