Best Car Crankshaft Seals of 2026
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Car crankshaft seals are essential components in the engine of a vehicle. These seals are designed to prevent oil leaks from the crankshaft and keep the engine lubricated. They are typically made from high-quality materials to withstand the high temperatures and pressures generated by the engine. These seals are critical for the proper functioning of the engine and can help to extend the lifespan of the vehicle. If the crankshaft seals become damaged or worn, it can result in oil leaks, engine damage, and reduced performance. Regular maintenance and replacement of these seals are necessary to ensure the longevity and efficiency of the engine.
At a Glance: Our Top Picks
Top 10 Car Crankshaft Seals
FEL-PRO Crankshaft Front Seal Set
This crankshaft front seal set is designed to fit your specific vehicle. It comes in a compact package of 1.27 H x 20.574 L x 8.89 W (centimeters) and weighs only 0.1 pounds. Made in China, this set is a great addition to your car crankshaft seals.
FEL-PRO TCS 46051 Front Seal Set
The FEL-PRO TCS 46051 Front Seal Set meets or exceeds all original equipment specifications with an application specific design for a perfect fit. Engineered for the sealing repair environment, it is validated for fit, form and function, ensuring unsurpassed quality you can trust. This product is a perfect fit for car crankshaft seals.
Bonbo 5046 & 1338 Crankshaft Seal Installation Tools for Dodge Cummins Diesel Engines
The Bonbo Crankshaft Seal Tools are designed specifically for Dodge Cummins diesel engines from 1989 to 2016, including models like the 4BT 3.9L and various 5.9L and 6.7L engines. These tools help you install the front crankshaft seal and wear sleeve properly, reducing the risk of leaks caused by uneven installation. Made from high-quality steel with a black oxide coating, they offer durability and resist rust and wear, ensuring reliable use over time. This set is essential if you want to install factory seals accurately and avoid damage, making your repair job smoother and more efficient.
ICT Billet LS Rear Main Seal Gasket for GM LS Engines
The ICT Billet LS Seal is designed specifically for GM LS series engines, including Gen 3 and Gen 4 models. This product offers a direct fit replacement for your original rear main seal and gasket, making installation straightforward and hassle-free. It ensures a reliable seal around the crankshaft cover, helping you maintain engine performance and prevent leaks. However, it's important to note that this seal is not compatible with LSX engine blocks or rear covers, so double-check your engine type before purchasing. With the ICT Billet LS Seal, you get both a gasket and a crankshaft seal for a complete rear cover solution.
E-cowlboy Crankshaft Rear Main Seal Installer for Cummins ISX QSX
The E-cowlboy Seal Installer Tool is designed to work perfectly with Cummins Signature, ISX, QSX, ISX12, and ISX15 engines, making it a reliable choice if you work with these models. This tool helps you install and remove the crankshaft rear seal and wear sleeve efficiently, saving you time and protecting the seal surface from damage. It’s a high-quality replacement for the original OEM part #3164780, ensuring you get the same performance without paying OEM prices. Made from durable carbon steel, this tool resists rust, corrosion, and impact, so you can count on it to last through many uses.
FEL-PRO Rear Main Seal Set
The FEL-PRO BS 40640 Rear Main Seal Set is a high-quality car crankshaft seal that is engineered and manufactured specifically for repair applications. With its application-specific design, it ensures a perfect fit that meets or exceeds all original equipment specifications. This rear main bearing oil seal installation set offers unsurpassed quality that you can trust.
Camoo Crankshaft Seal & Wear Sleeve Installer Kit for Dodge Cummins 3.9L-6.7L
The Camoo Seal Installer Kit is designed to fit a wide range of Cummins engines, including models from 1989 to present like the 3.9L, 5.9L, and 6.7L, as well as Paccar PX-6 and other Cummins series. This makes it a versatile choice if you work with multiple engine types. The kit helps you install specific seal numbers and the wear sleeve kit accurately, ensuring the parts fit perfectly without leaks. It’s built to press the seals evenly, which prevents early wear or leaks, saving you time and hassle. Plus, it’s manufactured with quality steel to meet OEM standards, so you can trust its durability and precision.
GM Genuine Parts 89060436 Rear Main Seal
The GM Rear Main Seal is designed to keep your engine running smoothly by sealing the ends of the crankshaft tightly. This helps prevent oil leaks, which can protect your engine from damage and reduce messy cleanups. Built to handle high heat and pressure, this seal ensures durability even under tough driving conditions. As a GM-recommended replacement part, it matches the quality and reliability of your vehicle’s original factory component, giving you confidence in its fit and performance. Choosing the GM Rear Main Seal means you’re maintaining your engine with a trusted, durable part made to exact GM specifications.
FEL-PRO Rear Main Seal Set
FEL-PRO BS 40183 Rear Main Seal Set is a high-quality engine main bearing seal installation set, specifically designed to fit perfectly and meet original equipment specifications. It is engineered and manufactured for repair applications and is made of unsurpassed quality materials that you can trust.
FEL-PRO Rear Main Seal Set
This FEL-PRO Rear Main Seal Set is designed to install a rear main bearing oil seal specifically for repair applications. Its application-specific design ensures a perfect fit, and it meets or exceeds all original equipment specifications. Its unsurpassed quality makes it a reliable choice for car owners.
Frequently Asked Questions (FAQs)
1. How much does it cost to replace a crankshaft seal?
The cost of replacing a crankshaft seal varies depending on the vehicle and engine layout. Generally, it can range from $200 to $500 or more.
2. How serious is a crankshaft seal leak?
A crankshaft seal leak can be a serious issue. These seals prevent oil from leaking outside of the crankcase. If they fail, it can lead to oil leaks, which can create a mess and potentially cause significant damage to the engine if not addressed promptly.
3. Is a crankshaft seal easy to replace?
Replacing a crankshaft seal can be challenging, especially if it is in a transverse engine (front-wheel drive or all-wheel drive). The seal is subjected to pressure from the timing chain or timing belt and accessories driven by the serpentine belt or v-belt.
4. How many hours does it take to change a crankshaft seal?
On average, it takes around 2.3 hours for a certified mechanic to replace a front crankshaft seal.
5. What are the symptoms of a crankshaft seal?
The most common symptom of a crankshaft seal problem is oil leaks. If the seal dries out, cracks, or breaks, it can result in oil leakage. Small leaks may cause oil accumulation under the engine, while larger ones may lead to oil dripping from the front of the engine.
6. What causes crankshaft seal failure?
Crankshaft seal failure can be caused by factors such as a restricted breather, tight oil-slinger clearance, or a propeller defect that places abnormal side load on the seal. These issues can lead to leaking of the crankshaft oil seal.
During our car crankshaft seal research, we found 24 car crankshaft seal products and shortlisted 10 quality products. We collected and analyzed 18,891 customer reviews through our big data system to write the car crankshaft seals list. We found that most customers choose car crankshaft seals with an average price of $15.69.
The car crankshaft seals are available for purchase. We have researched hundreds of brands and picked the top brands of car crankshaft seals, including Fel-Pro, Bonbo, ICT Billet, E-cowlboy, Camoo. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.
Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.