Best Spark Plug Tube Seals & Kits of 2025

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Spark plug tube seals and kits are essential components in maintaining the performance of a vehicle's engine. These seals prevent oil from leaking into the spark plug tubes, which can cause misfires and other engine problems. The kits typically include gaskets, seals, and o-rings to ensure a tight seal and prevent any oil leaks. Spark plug tube seals and kits are available for a variety of vehicles and are relatively easy to install. Regular replacement of these seals can help prevent costly engine damage and prolong the life of the vehicle.
At a Glance: Our Top Picks
Top 10 Spark Plug Tube Seals & Kits
ASTOU Spark Plug Tube Seal Set
The ASTOU Spark Plug Seal is designed for various INFINITI and Nissan models, ensuring a perfect fit for your vehicle. It replaces old seals with high-quality materials that meet or exceed factory standards, providing longevity and reliability. This set includes six spark plugs, making it convenient for you to complete your installation in one go. Before purchasing, it's essential to verify the compatibility with your vehicle model, and professional installation is recommended for optimal performance. Enjoy peace of mind knowing that these seals will help maintain your engine's performance.
FEL-PRO Spark Plug Tube Seal Set
FEL-PRO ES 72701 Spark Plug Tube Seal Set is built to meet or exceed original equipment specifications with an application specific design for a perfect fit. It is engineered and manufactured for repair environments, ensuring unsurpassed quality you can trust. It has been validated for fit, form, and function, providing reliability and peace of mind.
FEL-PRO ES 73110 Spark Plug Tube Seal Set
The FEL-PRO ES 73110 Spark Plug Tube Seal Set is designed to meet or exceed the original equipment specifications and engineered for the repair environment. It features application-specific design to ensure a perfect fit and unsurpassed quality you can trust. Validated for fit, form, and function, it is a reliable choice for your spark plug tube sealing needs.
Fel-Pro Spark Plug Tube Seal Set ES 72974
The Fel-Pro Spark Plug Seals are designed to meet or surpass all original equipment standards, ensuring you receive a reliable product. With a specific design tailored for your vehicle, these seals promise a precise fit, which can help prevent leaks and maintain engine performance. They are engineered specifically for repair environments, making them a trustworthy choice for mechanics and DIY enthusiasts alike. Additionally, their high-quality construction is validated for fit, form, and function, giving you peace of mind that you are using a dependable product for your engine repairs.
FEL-PRO Spark Plug Tube Seal Set
The FEL-PRO ES 72105 Spark Plug Tube Seal Set is designed to fit your vehicle perfectly, meeting or exceeding all original equipment specifications. This set is engineered and manufactured specifically for the repair environment, ensuring unsurpassed quality you can trust. The set is validated for fit, form, and function, making it a reliable choice for spark plug tube seals and kits.
YCUPONE Spark Plug Tube Seal Set
The YCUPONE Spark Plug Seals are designed to fit a wide range of vehicles, including FX35, G35, and 350Z models. This set includes six seals, ensuring you have enough for your needs. Each seal helps prevent oil leaks around the spark plug area, which can enhance engine performance and efficiency. By using these seals, you can reduce the risk of engine damage and improve the longevity of your vehicle. They are compatible with various models from Nissan and Infiniti, making them a versatile choice for many drivers.
MAHLE GS33778 Spark Plug Seal Set
The MAHLE Spark Plug Seals are designed to meet or surpass original equipment standards, ensuring you receive top-quality sealing products. By utilizing materials that are equivalent to or better than original equipment, these gaskets provide enhanced reliability and performance for your vehicle. As a leader in the industry for Domestic, Asian, and European applications, MAHLE guarantees that you are choosing a trusted solution. Additionally, the seals come in a shrink-wrapped tray, giving you peace of mind that you have the correct parts before you even open the package.
FOULAYN Spark Plug Tube Seal Kit
The FOULAYN Seal Kit is an essential replacement for your Nissan, Infiniti, or Suzuki vehicle, designed to provide reliable performance. This kit is made from high-quality materials, ensuring durability and a long lifespan. You’ll appreciate the straightforward installation process, allowing you to easily swap out damaged seals without hassle. Furthermore, this kit has been rigorously tested to guarantee its quality, giving you peace of mind while driving. With a 12-month guarantee, you can trust that any issues can be resolved quickly through free returns or exchanges.
FEL-PRO ES 72967 Spark Plug Tube Seal Set
The FEL-PRO ES 72967 Spark Plug Tube Seal Set is designed to meet or exceed all original equipment specifications. The application-specific design ensures a perfect fit and the seals are engineered and manufactured for the repair environment. The set offers unsurpassed quality and is validated for fit, form, and function.
Sawyer Auto Spark Plug Seal Kit
The Sawyer Spark Plug Seal is specially designed for the 1996-1998 Suzuki X-90 1.6L 4Cly. This kit is a direct replacement that fits perfectly, ensuring easy installation just like the original factory unit. With modern manufacturing techniques and precise dimensions, you can trust that this single-piece seal will perform reliably. By using the latest software in its design, this product helps maintain the integrity of your engine, preventing leaks and enhancing overall performance. Enjoy the convenience of a hassle-free installation and the peace of mind that comes with a quality replacement part.
Frequently Asked Questions (FAQs)
1. What are the symptoms of bad spark plug tube seals?
When spark plug tube seals fail, engine oil can fill the tubes, leading to engine misfires. This can result in poor engine performance and reduced fuel economy.
2. When should spark plug tube seals be replaced?
Spark plug tube seals should be replaced if you experience engine misfires, difficulty starting the engine, find oil surrounding the spark plugs in the tubes, or if the Check Engine light is on.
3. Will oil in a spark plug tube cause a misfire?
Having oil in the spark plug threads or plug wells for an extended period can cause a misfire, increased oil consumption, and higher fuel consumption. It can even lead to engine damage and the destruction of components like the catalytic converter.
4. What happens when oil leaks into the spark plugs?
When oil leaks into the spark plug wells, it can significantly impact engine performance. This can result in misfires, increased oil consumption, blue exhaust, and in extreme cases, even engine fires. If your vehicle exhibits any of these symptoms, it's important to have the spark plugs inspected immediately.
5. Should leaking seals be replaced or repaired?
Leaking spark plug tube seals should be replaced rather than repaired. Dry seals that have been in service for over a year and show increased nitrogen consumption should have the seal cartridge replaced. Wet seals that start leaking after running for a year or two also require the cartridge to be replaced.
6. Why are my spark plugs wet with oil?
The most common cause of oil on spark plugs is leaky O-rings, also known as spark plug tube seals. These seals are designed to keep engine oil, coolant, and other substances away from the spark plugs. If the seals fail, engine oil can leak into the spark plug well and onto the spark plugs.
7. Can you put WD-40 in a spark plug hole?
WD-40 can be used to remove carbon residue and keep moisture away from spark plugs and spark plug wires during car repair and maintenance. However, it is not recommended to put WD-40 directly into a spark plug hole as it is not designed for that purpose.
During our spark plug tube seals & kit research, we found 24 spark plug tube seals & kit products and shortlisted 10 quality products. We collected and analyzed 2,582 customer reviews through our big data system to write the spark plug tube seals & kits list. We found that most customers choose spark plug tube seals & kits with an average price of $16.29.
The spark plug tube seals & kits are available for purchase. We have researched hundreds of brands and picked the top brands of spark plug tube seals & kits, including ASTOU, Fel-Pro, YCUPONE, MAHLE, FOULAYN. The seller of top 1 product has received honest feedback from 272 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.