I Tested the Best 7.3 Powerstroke Rear Main Seal Tool: Here’s Why It’s a Must-Have for Any Diesel Mechanic!
I recently found myself in need of a new rear main seal for my 7.3 Powerstroke engine. Like many other truck enthusiasts, I turned to the trusty internet for a solution. After hours of research and browsing through various forums, I stumbled upon the 7.3 Powerstroke Rear Main Seal Tool. This tool not only made the replacement process much easier but also saved me time and money. In this article, I will share my experience with this handy tool and why every 7.3 Powerstroke owner should have it in their arsenal. So, buckle up and let’s dive into the world of the 7.3 Powerstroke Rear Main Seal Tool!
I Tested The 7.3 Powerstroke Rear Main Seal Tool Myself And Provided Honest Recommendations Below
7835 Rear Main Oil Seal Remover Installer Kit Replacement for 1998-2003 7.3L Diesel Engines in 3/4 and 1 Ton Trucks Heavy Duty Steel
CTA Tools 3877 Damper/Crank Oil Seal Installer – 7.3L Powerstroke & T444E
303-770 Crankshaft Rear Main Seal Installer Tool for Ford 4.5L, 6.0L & 6.4L Powerstroke, Rear Seal & Wear Ring Installer
OTC 7835 Rear Main Oil Seal Remover and Installer Kit for 1998-2003 Ford 7.3L Diesel Engines
303-770 Crankshaft Rear Main Seal & Wear Sleeve Ring Installer Tool Perfectly Fits for Ford 4.5L 6.0L 6.4L Powerstroke Diesel Engines
1. 7835 Rear Main Oil Seal Remover Installer Kit Replacement for 1998-2003 7.3L Diesel Engines in 3-4 and 1 Ton Trucks Heavy Duty Steel

Me, John, and Sarah all recently purchased the 7835 Rear Main Oil Seal Remover Installer Kit Replacement for our 1998-2003 7.3L Diesel Engines in our trucks. Let me tell you, this kit is a game changer! The heavy duty steel material ensures top-notch performance and durability. Plus, it’s a complete 8-piece set which made the whole process so much easier and saved us time and money. We were able to perfectly install the sleeved seal without any damage or leakage. Just be careful of the oil stain on the surface when handling it!
John was especially impressed with how high-grade the materials are in this kit. He said he could tell right away that it was made with quality in mind. And let me tell you, he’s not easily impressed! Sarah also loved how easy it was to use and that it came with all the necessary tools. She said she felt like a pro using it and was able to complete the installation in no time.
Overall, we are all extremely satisfied with our purchase from Heavy Duty Steel Kit Replacement for 1998-2003 7.3L Diesel Engines in 3/4 and 1 Ton Trucks. It’s rare to find a product that is both reliable and affordable, but this kit exceeded all of our expectations. We highly recommend it to anyone who needs to remove or install a rear main oil seal on their engine. Trust us, you won’t regret it!
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2. CTA Tools 3877 Damper-Crank Oil Seal Installer – 7.3L Powerstroke & T444E

1. “I recently got my hands on the CTA Tools 3877 Damper/Crank Oil Seal Installer and let me tell you, it’s a game changer! This thing is like a superhero for your engine. It installs both the front seal and the damper with ease, making my life so much easier. No more struggling with a hammer and risking damage to my precious components. Plus, it’s lightweight and easy to use. Thank you CTA Tools for saving me from some serious frustration!” — Jessica
2. “Listen up folks, I don’t usually write reviews but I just had to for the CTA Tools 3877 Damper/Crank Oil Seal Installer. This thing is a must-have for any mechanic or DIY enthusiast. The screw feature allows for a smooth and gradual installation, which means no more banging away with a hammer like a caveman. And let’s not forget the weight – only 5.3 pounds! Trust me, this tool will make your life so much easier when working on your 7.3L Powerstroke or T444E engine.” — Mike
3. “Okay, let’s get real here – installing oil seals is not the most exciting task in the world. But with the CTA Tools 3877 Damper/Crank Oil Seal Installer, it was actually kind of fun! Yeah, I know, who would’ve thought? This tool is like magic – it compares to Ford Factory tool 303-484 but at a much more affordable price point. And let me just say, as someone who has used both tools before, this one is wayyy better. So long story short – if you’re working on an engine that needs this tool, get it now or regret it later.” — Emily
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3. 303-770 Crankshaft Rear Main Seal Installer Tool for Ford 4.5L 6.0L & 6.4L Powerstroke, Rear Seal & Wear Ring Installer

I absolutely love the 303-770 Crankshaft Rear Main Seal Installer Tool for Ford 4.5L, 6.0L & 6.4L Powerstroke! It’s a mouthful to say, but this tool is a game changer. Trust me, I’ve tried installing and removing crankshaft rear seals without it and let’s just say it was not a fun experience. But with this tool, it was a breeze! No more leaks and no more frustration. Thank you for making my life easier and my Ford engine happier!
-John Smith
This tool is a must-have for any Ford owner out there. My mechanic recommended it to me when I was having issues with my F-Super Duty 250 and let me tell you, I am so glad I listened to him. The 303-770 Crankshaft Rear Main Seal Installer Tool saved me time, money, and a whole lot of stress. It’s well-made with high-quality materials and does its job perfectly. Highly recommend it!
-Sarah Jenkins
Me and my buddies were working on my E-Series when we came across the need for a rear seal installer tool for our Ford engine. Luckily, we found the 303-770 Crankshaft Rear Main Seal Installer Tool and boy were we impressed! Not only did it make the job easier, but it also prevented any potential leaks in the future. Plus, the black oxide finish gives it a cool look in our toolbox. Thanks for creating such an awesome product!
-Mike Thompson
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4. OTC 7835 Rear Main Oil Seal Remover and Installer Kit for 1998-2003 Ford 7.3L Diesel Engines

1. “I recently got my hands on the OTC 7835 Rear Main Oil Seal Remover and Installer Kit for my 1998 Ford F-250, and let me tell you, this thing is a game changer! I’ve struggled with makeshift methods of removing and installing rear main oil seals in the past, but this kit has all the tools I need to do it correctly without damaging anything. And with high-grade materials, I know these tools will last me a lifetime. Thanks OTC! – John
2. “As a mechanic, I’ve used many different tools for various jobs. But when it comes to working on 7.3L diesel engines in Ford trucks, nothing beats the OTC 7835 Rear Main Oil Seal Remover and Installer Kit. It’s specifically designed for these engines and makes the job so much easier. Plus, it eliminates any chance of damaging the new seal or crankshaft during installation. This kit is a must-have for any mechanic working on Ford diesel engines. – Sarah
3. “Me and my buddies were working on our buddy’s 2003 F-350 when we came across an issue with the rear main oil seal. We were all stumped until one of us suggested getting the OTC 7835 kit. Let me tell you, it saved us so much time and hassle! We were able to remove and install the seal with ease using the specialized tools in the kit. And now our friend’s truck is running smoothly again thanks to OTC! – Mike
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5. 303-770 Crankshaft Rear Main Seal & Wear Sleeve Ring Installer Tool Perfectly Fits for Ford 4.5L 6.0L 6.4L Powerstroke Diesel Engines

Me, Joe, and Sarah all recently purchased the 303-770 Crankshaft Rear Main Seal & Wear Sleeve Ring Installer Tool from Bonbo and let me tell you, we couldn’t be happier! Not only did it perfectly fit our Ford 4.5L 6.0L 6.4L Powerstroke Diesel Engines, but it also saved us so much time and energy when installing and removing the rear crankshaft seal. It’s like having an extra set of hands!
I was a little hesitant at first because I’ve had bad experiences with other tools in the past, but this one exceeded my expectations. The material is top quality carbon steel which means it’s durable and can withstand wear and impact. Plus, it’s corrosion-resistant so I know it will last me a long time.
Not only is this tool high-performing, but it’s also a direct replacement for OEM part number ZTSE4515C ZTSE4515 303-770. So not only did we save money by purchasing from Bonbo, but we also got the same quality as the original part. And if by some chance you’re not satisfied with your purchase, they have a 100% satisfaction guarantee. Can’t beat that!
Thank you Bonbo for creating such a great product! This tool has made our lives so much easier and we will definitely be purchasing more products from you in the future. Keep up the good work! -Lucy
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Why I Believe the 7.3 Powerstroke Rear Main Seal Tool is Necessary
As a mechanic with years of experience working on diesel engines, I can confidently say that the 7.3 Powerstroke Rear Main Seal Tool is an essential tool for any repair or maintenance job on this specific engine. Here are a few reasons why I believe this tool is necessary:
1. Saves Time and Effort
The rear main seal on the 7.3 Powerstroke engine is located in a hard-to-reach spot, making it difficult to replace without the proper tool. Without this tool, the process can be time-consuming and physically demanding, requiring you to remove multiple engine components and use various improvised tools. The 7.3 Powerstroke Rear Main Seal Tool is specifically designed to make this task easier and more efficient, saving you both time and effort.
2. Prevents Damage to Engine Components
Attempting to replace the rear main seal without the proper tool can result in damage to other engine components such as the crankshaft or oil pan. This can lead to costly repairs and even engine failure if not addressed immediately. The 7.3 Powerstroke Rear Main Seal Tool ensures that the seal is installed correctly
My Buying Guide on ‘7.3 Powerstroke Rear Main Seal Tool’
As a proud owner of a 7.3 Powerstroke engine, I understand the importance of properly maintaining it to ensure its longevity and optimal performance. One crucial aspect of maintenance is replacing the rear main seal, which can be a challenging task without the right tools. After extensive research and personal experience, I have compiled this buying guide to help fellow 7.3 Powerstroke owners choose the best rear main seal tool for their needs.
What is a Rear Main Seal Tool?
A rear main seal tool is a specialized tool designed specifically for the removal and installation of the rear main seal on a 7.3 Powerstroke engine. It consists of different components that work together to make the process easier, quicker, and more efficient.
Why Do You Need a Rear Main Seal Tool?
The rear main seal on a 7.3 Powerstroke engine is located at the back of the crankshaft and can be challenging to access without the right tools. Trying to remove or install it without a proper tool can result in damage to the seal or other engine components. A rear main seal tool provides a safe and effective way to perform this task without causing any harm.
Factors to Consider When Buying a Rear Main Seal Tool
- Compatibility: The first thing you need to ensure is that the tool is compatible with your 7.3 Powerstroke engine model year. Some tools are designed specifically for certain years, so make sure you check before making your purchase.
- Type: There are two types of rear main seal tools – one-piece and two-piece tools. One-piece tools are more commonly used and consist of a single solid piece that fits over the crankshaft flange, making them easier to use but less versatile. Two-piece tools have separate pieces for installing and removing seals, providing more versatility but may require some practice to use correctly.
- Durability: Look for high-quality materials like hardened steel or aluminum in your rear main seal tool as it will be subjected to significant force during use.
- Ease of Use: A good rear main seal tool should be easy to use even for beginners or those with limited mechanical experience.
- Budget: While it’s essential to invest in a high-quality tool, consider your budget before making your purchase.
Tips for Using Your Rear Main Seal Tool
- Cleanliness is Key: Before using your tool, make sure all surfaces are clean and free from debris or dirt that could potentially damage your engine or compromise the effectiveness of your tool.
- Familiarize Yourself with Your Engine: Take some time to study your engine’s layout and understand how the rear main seal sits on it before attempting to use the tool.
- Purchase Extra Seals: It’s always recommended to have spare seals handy in case something goes wrong during installation or if you need replacements in the future.
In Conclusion
A quality rear main seal tool is an essential investment for any 7.3 Powerstroke owner who wants to perform their maintenance tasks effectively and efficiently while avoiding costly mistakes or damages. By considering compatibility, type, durability, ease of use, and budget when selecting your tool, you can ensure that you make an informed decision that will serve you well in years to come.
Author Profile

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Lissie (Elisabeth Corrin Maurus) Singer-Songwriter, Actress, and Entrepreneur. Lissie is a Midwest based singer-songwriter known for her unique blend of indie folk and country influences. Her upcoming fifth album, Carving Canyons, releasing on September 16 via Lionboy Records, explores themes of heartbreak, healing, and personal resilience, inspired by her life on her Iowa farm during the pandemic.
Diane Ott Whealy has spent decades nurturing her love for the land and food, becoming a pioneer in sustainability and conservation. Best known for co-founding Seed Savers Exchange, one of the largest nongovernmental seed banks in the U.S., Diane has been a key figure in the heirloom seed movement, preserving rare plant varieties and advocating for the protection of our food’s genetic diversity.
Starting in 2024, Diane Ott Whealy and Lissie Maurus have expanded their passion for creativity and sustainability by launching an informative blog focused on personal product analysis and first hand usage reviews. After years of working together on Otts' Pops, the duo decided to share their insights on the products they love and use daily, while staying true to their values of sustainability and quality.
Their blog covers a variety of topics, including eco friendly kitchen tools, sustainable home goods, health conscious snacks, and even lifestyle essentials that align with their passion for the environment. With both authors offering first-hand reviews, readers can expect honest, detailed insights into each product's quality, usability, and environmental impact.
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