Coil Spring Insulator

Christina Gonzales
18 min readMar 16, 2024



Get ready to explore the world of Coil Spring Insulators as we bring you an exciting roundup of the best products available in the market. These insulators are designed to protect your electronic devices from short circuits and voltage fluctuations, keeping your gadgets safe and sound. Whether you are a tech enthusiast or simply looking for the perfect Coil Spring Insulator for your home, we’ve got you covered with our comprehensive guide and recommendations.

The Top 16 Best Coil Spring Insulator

  1. ACDelco Professional Coil Spring Insulator for Steering and Suspension Systems — A reliable and professional aftermarket replacement Coil Spring Insulator for optimal steering and suspension performance by ACDelco.
  2. Front Coil Spring Insulators for 1964–88 Vehicles — RestoParts Insulators: Eliminate annoying noises between coil spring and frame, perfectly fitting for 1964–88 vehicles. Prop 65 Warning and CR Rating applied.
  3. High-Performance Coil Spring Isolator Set — Energy Suspension’s 9.6107G Coil Spring Isolator Set offers high-performance and professional quality, perfect for anyone looking to protect their investment and enjoy a smoother, more responsive ride.
  4. High-Quality Coil Spring Insulator for Noise Reduction — Experience unparalleled performance and durability with KYB’s Coil Spring Insulator, the highest quality replacement insulator that effectively reduces noise and vibration while maintaining optimal vehicle handling and safety.
  5. Westar’s Premium OE Replacement Coil Spring Insulators — Upgrade and maintain your vehicle’s suspension system with Westar’s original equipment replacement coil spring insulators for exceptional fitment and reliable performance.
  6. CRP Industries AVP0348R Coil Spring Insulator Replacement for Easy Fit — Easily upgrade your vehicle’s coil spring insulator with CRP Industries AVP0348R for a perfect Original Equipment fit and added durability.
  7. Westar Coil Spring Insulator: Reliable Suspension System Upgrade — Enhance your suspension system and vehicle performance with Westar’s OE replacement Coil Spring Insulators, designed for the highest fitment and reliability.
  8. Coil Spring Insulator for Various Vehicle Models — Upgrade your suspension with Delphi’s TD4652W Coil Spring Insulator, designed for GMC Sonoma, Jimmy, Chevrolet S10, Blazer, and Isuzu Hombre, providing a smooth and reliable ride.
  9. Moog K6203–2 Coil Spring Insulator for Noise Reduction — Protect your ride and enjoy a quiet drive with Moog K6203–2 Coil Spring Insulator, a high-quality replacement designed to restore your coil spring system and reduce noise.
  10. Durable Coil Spring Insulator for Superior Car Performance — Upgrade your undercar auto experience with the durable Coil Spring Insulator from First Equipment Quality, perfect for rubber and metal components, and front-wheel drive axles.
  11. GM OE Coil Spring Insulator for Cadillac, Chevrolet, GMC, and Buick Vehicles — Upgrade your Cadillac, Chevrolet, GMC, or Buick vehicle with this GM Genuine Parts 22891336 Coil Spring Insulator, featuring advanced technology, premium quality, and unmatched performance.
  12. Delphi TD4661W Coil Spring Insulator: Standard Replacement for Front Lower and Rear Lower — Upgrade your vehicle’s suspension performance with Delphi’s Coil Spring Insulator, designed for both front and rear lower positions and offering OE durability and compatibility for a seamless driving experience.
  13. High-Quality Westar Coil Spring Insulator for Suspension Repair — Westar’s OE Replacement Coil Spring Insulator for improved suspension system performance, ensuring a comfortable and reliable drive, while preserving fuel efficiency and avoiding unexpected breakdowns.
  14. Original Equipment Coil Spring Insulator — Upgrade your car’s suspension with genuine 52686-S5A-004 Rear Upper Coil Spring Insulator for guaranteed performance and safety.
  15. High-Quality Coil Spring Insulator for Improved Vehicle Performance — Experience the ultimate coil spring insulator with KYB SM5551, designed to exceed expectations with its superior quality, noise reduction capabilities, and exceptional fit and construction that can be trusted for improved performance and safety.
  16. Premium Coil Spring Insulator for GM Vehicles — The GM Genuine Parts 20888666 Coil Spring Insulator offers reliable performance for GM vehicles, with a precise fit for hassle-free installation.

As an Amazon™ Associate, we earn from qualifying purchases.


🔗ACDelco Professional Coil Spring Insulator for Steering and Suspension Systems


As an avid mechanic, I’ve been using the ACDelco Coil Spring Insulator for quite some time now. This premium aftermarket insulator stands out for its high level of professionalism and reliability. It replaced the insulators on my suspension and steering system, bringing out a noticeable improvement in performance.

One of the most impressive features of the ACDelco Coil Spring Insulator is its ability to maintain excellent fit and function. This high-quality component not only met, but surpassed my expectations. The insulator is designed to provide the same level of performance as the original factory one.

While there are no evident cons with this product, the ACDelco Coil Spring Insulator comes with a slightly higher price tag when compared to its competitors. However, considering its premium quality and superior performance, it’s definitely worth the investment. So, if you’re looking for a professional, premium aftermarket replacement, the ACDelco Coil Spring Insulator should be on your shortlist.

🔗Front Coil Spring Insulators for 1964–88 Vehicles


Last weekend, I was cruising down the highway in my classic car when I noticed a distracting noise. It turned out to be my old coil spring vibrating against the metal frame. That’s when I remembered I had a set of RestoParts Insulators lying around.

These insulators fit perfectly between the coil spring and the frame, like a glove, and they completely eliminated the noise. I’ve been using them for a week now and they’ve been a lifesaver, providing a smoother, quieter ride. But, be prepared for a warning label as they’re Prop 65 compliant.

Overall, a solid product that did the job and saved me from the hassle of replacing my entire coil spring system.

🔗High-Performance Coil Spring Isolator Set


The Energy Suspension 9.6107G Coil Spring Isolator Set impressed me with its professional-grade performance. The Hyper-Flex polyurethane spring isolators stood out for their ability to handle heavy-duty performance suspensions while remaining impervious to any contaminants. The black universal pair was a perfect addition to my car, protecting my investment with its high-quality features.

However, one drawback was that the product was not truly universal, as it did not fit in all applications. Overall, the Energy Suspension Coil Spring Isolator Set was a great purchase for anyone looking to elevate their driving experience.

🔗High-Quality Coil Spring Insulator for Noise Reduction


When I first heard about the KYB SM5524 Coil Spring Insulator, I admit, I had my doubts. Could this seemingly simple part really make a difference in my beloved car? .

But, trust me, it did! . After fitting it perfectly into my vehicle and driving around, I noticed such a significant improvement. Not only did it reduce the annoying squeaks and rattles, it also managed to eliminate most of the vibration noises that used to bother me.

I truly believe this insulator is the best replacement available, and its quality was up there, right alongside the original equipment. While it may be pricier than some alternatives, in my book, it’s worth it.

It’s not just a coil spring insulator–it’s an essential part of your car’s overall safety and performance. And that, my friends, is something you can’t put a price on.

🔗Westar’s Premium OE Replacement Coil Spring Insulators


As a car enthusiast, I’ve always been on the lookout for reliable and high-quality suspension parts. That’s why I was excited to try out Westar’s ST-4923 coil spring insulator. Right off the bat, I was impressed with how closely it resembled the original part that came with my vehicle. The fit was spot-on, with no need to adjust or modify anything.

During my first few drives, I noticed a significant difference in the ride comfort. The ST-4923 coil spring insulator absorbed the shocks and bumps from the road, making my commute a lot smoother and more enjoyable. It also seemed to help with my vehicle’s overall efficiency, as my gas mileage improved noticeably.

However, there was one downside that I couldn’t ignore. After a few months, I noticed that the coil spring insulator started to wear down quickly, despite being made of high-quality materials. It was a bit concerning, as I had expected it to last a lot longer.

All in all, the Westar ST-4923 coil spring insulator is a great product that provides excellent comfort and improved efficiency. But, the durability could use some work to make it a truly outstanding choice for your suspension system.

🔗CRP Industries AVP0348R Coil Spring Insulator Replacement for Easy Fit


The Rein Coil Spring Insulator has been my savior during those chilly commutes. Its ability to keep the coil spring in perfect working condition, despite the biting winter cold, is truly remarkable.

It’s like having a little blanket around your wheels to keep them snug and happy. However, I did notice a slight difference in the smoothness of the ride compared to the original equipment part. It’s not a deal-breaker, but it’s something to consider if you’re a picky passenger.

Overall, the Rein Coil Spring Insulator is a reliable and affordable solution for those looking to keep their vehicle’s suspension in tip-top shape.

🔗Westar Coil Spring Insulator: Reliable Suspension System Upgrade


When I needed a reliable replacement for my worn-out coil spring insulator, I turned to Westar Coil Spring Insulator: St-4939. It was a lifesaver for my suspension system, providing the perfect fit and excellent performance. The installation process was smooth, and I could immediately feel the difference in comfort and stability while driving.

Westar’s attention to detail shone through with this product, as it was built to the highest standards for optimal performance. However, I noticed that replacing the insulator is a task that should not be delayed, as it can significantly impact my car’s general capabilities and fuel efficiency.

Overall, the Westar Coil Spring Insulator has been a great investment for my vehicle, and I would recommend it to anyone seeking a high-quality replacement part.

🔗Coil Spring Insulator for Various Vehicle Models


I recently got my hands on the Delphi TD4652W Coil Spring Insulator, and let me tell you, it’s quite a game-changer for those seeking a smooth and comfortable ride. Fitting various car models like GMC Sonoma and Blazer, the Chevrolet S10 and Jimmy, and Isuzu Hombre, this insulator truly is a one-size-fits-all solution.

What makes this product stand out is its durability and sturdiness. Upon installation, I could notice a significant difference in the way the car handled bumps and rough terrains — my car truly felt like a whole new beast on the road. The insulator absorbed the impact brilliantly, providing a much more comfortable driving experience.

That being said, as with any product, it does have its downsides. While installation wasn’t overly complicated, it did take me a bit longer than expected to get it all set up correctly. However, once it was properly fitted, the benefits it offered made it all worth it.

Overall, if you’re in the market for a coil spring insulator that provides a smooth and comfortable ride, the Delphi TD4652W is certainly worth considering. It might be a bit of a struggle to set up, but once you’ve got it installed, you’ll be hard-pressed to find any other option that’s better suited for your needs.

🔗Moog K6203–2 Coil Spring Insulator for Noise Reduction


Coil Spring Insulator, here’s a story — I was swerving on a bumpy road recently when I realized something quite unusual. The suspension of my car had become a bit squeaky, and I knew it was time for a tune-up. That’s when I remembered I had a Moog Coil Spring Insulator in my garage.

Let me tell you, this insulator certainly lived up to its expectations. Not only did it bring my car’s ride to a smooth glide once again, but it also did an excellent job in reducing the noise while I was driving. I was impressed by the high-quality rubber construction, which made it a perfect fit for my car’s coil spring operation.

However, I did encounter a minor hiccup when I was trying to put it into place. Since the box had no label specifying which end was for front and rear, I had to spend quite a few minutes figuring it out. This little detail could likely be improved in the future.

Overall, this Moog Coil Spring Insulator made a massive difference in the comfort and isolation of my ride. It was worth the investment, especially since it helped restore my car’s coil spring operation to like new status.

🔗Durable Coil Spring Insulator for Superior Car Performance


When my car needed a reliable coil spring insulator, I turned to First Equipment Quality’s W0133–1903341. The product arrived promptly and was easier to install than I thought it would be. The insulator took my car’s performance to another level, reducing noise and improving smoothness.

However, I noticed that the material started to wear down quicker than expected. While the product worked well initially, it didn’t hold up as long as I would have hoped. Despite this minor issue, the coil spring insulator from First Equipment Quality did its job during my daily drives.

🔗GM OE Coil Spring Insulator for Cadillac, Chevrolet, GMC, and Buick Vehicles


I recently tried the GM Genuine Parts coil spring insulator, and I have to say, I was pleasantly surprised. As someone who drives a Chevrolet, I was excited to try a product specifically designed for it by GM engineers. The insulator was designed and engineered to meet my car’s exact specifications, which I appreciated.

One of the most impressive things about the coil spring insulator is how it performs — it’s much better than I expected. The materials used are of high quality, and they provide a smooth, comfortable drive. I also loved the peace of mind that comes with knowing this part is designed and tested to rigorous standards, backed by the trusted name of General Motors.

However, there were a couple of minor drawbacks. The installation process could be a bit more straightforward, and the instructions could’ve been clearer. But overall, I’m happy with my purchase and would definitely recommend this coil spring insulator to other Chevy drivers looking for a reliable and premium product.

🔗Delphi TD4661W Coil Spring Insulator: Standard Replacement for Front Lower and Rear Lower


I recently stumbled upon the Delphi TD4661W coil spring insulator, and I must say, it has been quite the little hero for my car’s performance. As someone who used to struggle with worn-out parts, I am thrilled with the results I’ve seen.

The coil spring insulator fits perfectly for both front and rear lower positions, making it an incredibly versatile solution. It fits like a glove, which means no more rattling or annoying squeaks while driving. The standard replacement grade truly lives up to its name — a perfect match for older vehicles like mine.

However, a slight con I’ve noticed is that I had to order more than one of these insulators for my car. It may be due to the specific model and year of my vehicle, but it’s definitely worth a heads-up.

Overall, the Delphi TD4661W coil spring insulator has proven to be a reliable and high-quality addition to my car’s maintenance routine. The peace of mind it provides while driving is priceless. I can’t wait to see the long-term benefits!

🔗High-Quality Westar Coil Spring Insulator for Suspension Repair


For years, Westar has been known for their top-notch coil spring insulators. These insulators have an exclusive design, making them perform like the original OE replacement parts, ensuring a perfect fit and reliable efficiency. I’ve personally experienced the peace of mind brought by Westar’s OE Replacement Coil Spring Insulators.

Replacing worn-out parts with genuine Westar insulators isn’t just about restoring comfort and capabilities; it’s also about conserving gas and avoiding unexpected breakdowns. Trust me, with Westar, your car will thank you.

🔗Original Equipment Coil Spring Insulator


I recently needed to replace a few suspension parts in my car and I decided to go for a set of genuine coil spring insulators. It wasn’t an easy process finding the exact part I needed, but once I got it, the difference in performance was evident. The original parts are designed with precision to match the car’s handling, and this was no exception.

During my installation process, I noticed that the quality of these parts was indeed top-notch. Made by the same brand that originally supplied my car’s parts and used in the factory, I could sense the precision and care that went into the manufacturing.

It’s unfortunate that not all car shops stock these genuine coil spring insulators. If you’re considering making the upgrade yourself, be prepared for some hurdles in finding the right part. Alternatively, if you trust the mechanic, you can rely on them to source the right parts for your car.

Despite the challenges, I stand firm behind this product. For anyone searching for a high-performance substitute, the genuine 52686-S5A-004 Rear Upper Coil Spring Insulator ticks all the boxes. It’s an investment — but a worthwhile one for the safety and performance of your vehicle.

🔗High-Quality Coil Spring Insulator for Improved Vehicle Performance


The KYB SM5551 Coil Spring Insulator is a top-notch replacement option for those looking to improve their vehicle’s performance, handling, and sound. These insulators reduce annoying squeaks, rattles, and vibration noises while maintaining a level of quality that matches or surpasses the original equipment. After using them in my daily drive, I can say the difference is quite noticeable.

However, I must mention that they can be a bit tricky to install, but once done, they perform remarkably well. Their construction is solid, making them a reliable choice for any vehicle owner. While they’re a bit more expensive than their counterparts, investing in such high-quality parts ensures a smoother and safer ride. Overall, I highly recommend the KYB SM5551 Coil Spring Insulator for a premium driving experience.

🔗Premium Coil Spring Insulator for GM Vehicles


I recently experienced the GM Genuine Parts 20888666 Coil Spring Insulator firsthand, and let me tell you, it’s the real deal. This little guy is all about precision and ease of installation.

It fits my GM vehicle like a glove, making my life as the owner incredibly easier. Plus, I’ve got peace of mind knowing it’s been designed, engineered, tested, and warranted to deliver the same performance.

Sure, it’s a simple part, but it’s these little things that make a big difference in driving home a good experience.

Buyer’s Guide

Coil spring insulators are essential components in the suspension system of vehicles, providing a cushion between the coil spring and the vehicle body. These insulators help to reduce noise, vibration, and harshness, enhancing the overall driving experience. In this buyer’s guide, we will discuss the important features, considerations, and general advice about coil spring insulators to help you make an informed purchase decision.


Important Features

When selecting coil spring insulators, consider the following features to ensure optimal performance and durability:

  1. Material: High-quality insulators are typically made from durable materials, such as steel or composite materials, which offer superior resistance to wear and tear. 2. Size and shape: Ensure that the insulators match the specifications of your vehicle’s suspension system. 3. Coating: Some insulators come with a protective coating, which can help resist corrosion and extend the lifespan of the product. 4. Installation ease: Look for insulators that are easy to install and require minimal modifications to your vehicle’s suspension system.


Before purchasing coil spring insulators, consider the following factors to ensure a successful installation and optimal performance:

  1. Compatibility: Verify that the insulators are compatible with your vehicle model and year. 2. Part installation: Make sure the insulators are installed correctly, following the manufacturer’s instructions, to avoid any potential damage to your vehicle’s suspension system. 3. Noise reduction: Assess the noise levels in your vehicle and determine if the insulators will effectively reduce vibrations and harshness. 4. Durability: Consider the durability of the insulators, especially if you drive in harsh conditions or in areas with high levels of road salt, which can accelerate corrosion.

General Advice

To ensure the best performance and longevity of your coil spring insulators, follow these general tips:

  1. Regular maintenance: Inspect and clean the insulators regularly to remove any debris or contaminants that may affect their performance. 2. Proper installation: Ensure that the insulators are installed correctly and securely, using the recommended tools and techniques. 3. Use genuine parts: Purchase genuine coil spring insulators from a reputable manufacturer to guarantee quality and performance. 4. Store and transport: When not in use, store the insulators in a dry and clean environment to prevent corrosion and ensure their longevity.

By considering the important features, taking into account relevant considerations, and following general advice, you can ensure a successful purchase and installation of coil spring insulators. These components play a crucial role in the suspension system of your vehicle, providing a comfortable and smooth driving experience. Take your time to research and select the right insulators for your vehicle to enjoy the benefits of improved performance and reduced noise and harshness.



What is a coil spring insulator?

A coil spring insulator is a device that absorbs shock and noise generated by a suspension system in vehicles. It is typically made of compressed coil springs that help maintain a comfortable and quiet ride. These insulators are crucial for reducing the harshness of bumps and irregularities on the road and providing better handling of the vehicle.

Coil spring insulators can be found in various types of vehicles, including cars, trucks, and motorcycles. They are a key component in ensuring a smooth driving experience and preventing premature wear and tear on suspension and steering components due to vibrations and shocks encountered during travel.

What are the benefits of using a coil spring insulator?

Coil spring insulators provide numerous benefits for vehicles and their occupants. Some of these benefits include improved riding comfort through reduced noise and vibrations, extended lifespan of the suspension and steering components by reducing the impact from bumps and potholes, and overall improvement in vehicle handling and stability.

In addition, coil spring insulators can also improve the responsiveness of the vehicle during braking and acceleration, and enhance its ability to maintain better traction on rough roads. This leads to improved safety and efficiency while driving, thus making the coil spring insulator a valuable addition to any suspension system.


What materials are commonly used to make coil spring insulators?

Various materials can be used to manufacture coil spring insulators, depending on their intended application and desired properties. Some common materials include steel, stainless steel, and rubber. Steel is strong and durable, making it ideal for heavy-duty applications, while rubber offers exceptional vibration absorption and noise reduction capabilities.

Other materials, such as polyurethane and bronze alloys, can also be used to produce coil spring insulators tailored to specific needs. The choice of material depends on factors like cost, durability, weight, and performance requirements, ensuring optimal performance and functionality for the intended vehicle.

Can I install a coil spring insulator myself or is it better to leave it to professionals?

Installing coil spring insulators can be a complex process that involves disassembling and reassembling components of a vehicle’s suspension system. While it may seem like a cost-saving option to install the insulators yourself, it is generally recommended to seek professional help for this task. Proper installation ensures that the coil spring insulators function correctly and provide optimal benefits to the vehicle’s performance and ride quality.

Additionally, professional installation may also offer additional guarantees or warranties, providing peace of mind and assurance that the coil spring insulators will perform as designed. This can ultimately save time, effort, and money in the long run, compared to attempting to install them yourself.


How long do coil spring insulators typically last in a vehicle?

The lifespan of coil spring insulators depends on several factors, including the material they are made from, the driving conditions, and the quality of installation. High-quality, well-maintained coil spring insulators can last for several years or more, providing an extended period of comfortable and quiet operation.

However, factors like exposure to harsh weather conditions, frequent exposure to UV rays, and rough driving can cause premature wear and tear on the insulators. Regular maintenance and inspection of the vehicle’s suspension system can help identify when the coil spring insulators may need replacement, ensuring optimal performance and ride quality over the long term.

What should I consider when buying coil spring insulators?

When purchasing coil spring insulators, it is essential to consider the specific requirements of your vehicle, including its make, model, and type of suspension system. Consulting with a professional technician or a trusted automotive parts supplier can help identify the correct coil spring insulators that meet your needs and preferences.

Additionally, factors like cost, warranty, brand reputation, and customer ratings can also influence your decision when purchasing coil spring insulators. It is essential to research and invest in a reliable and high-quality product that provides the desired benefits and performance, ensuring a smooth and comfortable driving experience for you and your passengers.

As an Amazon™ Associate, we earn from qualifying purchases.