Unlocking Precision: My Expert Experience with the Turbo 350 Speedometer Gear
When I first dove into the world of classic cars and performance upgrades, I quickly realized that every little component plays a crucial role in the overall driving experience. One part that often gets overlooked, yet is vital for accurate speed readings, is the Turbo 350 speedometer gear. This seemingly simple piece of engineering is not just a gear; it’s a bridge between the raw power of your engine and the precision of your dashboard. Understanding its function and importance has transformed how I approach my vehicle’s performance. Join me as I explore the fascinating world of the Turbo 350 speedometer gear, where precision meets power, and learn how this essential component can elevate your ride to new heights.
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GM TURBO TH350 350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR SET 18 19 20 21 22 TEETH SPEEDO W/BULLET

GM TURBO TH350 350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR SET 18 19 20 21 22 TEETH SPEEDO W/BULLET & CLAMP

GM Genuine Parts 3860347 Automatic Transmission Yellow Speedometer Driven Gear

Ciuouient Bullet Speedometer Gear housing with oring and Seal Plus an Extra Seal kit Compatible with Turbo Hydra-Matic 180/C, 200/C, 250/C, 300, 350/C, 375B Hydramatic AutomaticTransmissions
1. GM TURBO TH350 350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR SET 18 19 20 21 22 TEETH SPEEDO W-BULLET

As I delve into the GM TURBO TH350 350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR SET, I can’t help but feel excited about the potential this product holds for automotive enthusiasts like myself. This gear set, designed for the TH350 automatic transmission, is an essential upgrade for anyone looking to enhance the accuracy and performance of their vehicle’s speedometer. The set includes gears with varying teeth counts—18, 19, 20, 21, and 22—which allows for precise calibration based on tire size and vehicle modifications. This adaptability is crucial for ensuring that my speedometer reflects true speed, especially after changing tires or making other modifications that can impact speed readings.
One of the standout features of this gear set is its versatility. With multiple options available, I can fine-tune the gear selection to match my specific vehicle setup. This feature really resonates with me as I often find myself making changes to my vehicle, whether it’s upgrading tires or tweaking the suspension. Having the ability to easily switch out gears means I can maintain an accurate speedometer without having to invest in a completely new unit or rely on external calibration tools. This ease of use is a significant advantage for someone like me who enjoys working on cars and values precision in performance.
Moreover, the installation process of the GM TURBO TH350 gear set seems straightforward enough for someone with basic mechanical skills. The fact that I can install this gear set myself saves time and money on labor costs. I appreciate products that empower me to take control of my vehicle’s performance without the need for professional intervention. This is a significant selling point for me, as I enjoy the DIY aspect of car maintenance and upgrades. The satisfaction of completing an installation myself, knowing that I’ve improved my vehicle’s performance, is truly rewarding.
Additionally, the durability and reliability of the materials used in this speedometer gear set cannot be overlooked. I want components in my vehicle that are built to last, and I feel confident that this gear set will withstand the rigors of daily driving and performance use. The gears are designed to function smoothly under various conditions, which is essential for maintaining accurate speed readings over time. Knowing that I am investing in a product that prioritizes longevity gives me peace of mind.
In conclusion, the GM TURBO TH350 350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR SET is an excellent investment for anyone seeking to enhance their vehicle’s performance and maintain accurate speed readings. With its range of teeth options, ease of installation, and durable construction, I feel this product is tailored for automotive enthusiasts like myself. If you’re looking to improve your vehicle’s accuracy and performance, I highly recommend considering this gear set. It’s a straightforward, effective solution that will surely elevate your driving experience.
Feature Benefit Multiple Teeth Options (18-22) Allows precise calibration for various tire sizes and modifications. Easy Installation DIY-friendly, saving time and labor costs. Durable Materials Ensures longevity and reliable performance over time. Improves Speedometer Accuracy Maintains true speed readings for enhanced driving experience.
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2. GM TURBO TH350 350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR SET 18 19 20 21 22 TEETH SPEEDO W-BULLET & CLAMP

As I dive into the details of the GM TURBO TH350 350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR SET, I can’t help but feel a sense of excitement about the value it brings to car enthusiasts and mechanics alike. This product is not just a gear set; it represents a vital component in ensuring that your vehicle’s speedometer functions accurately. Whether you’re restoring a classic car or upgrading your current ride, this gear set is an essential investment that will undoubtedly enhance your driving experience.
The key selling point of this speedometer gear set is its versatility. With options for 18 to 22 teeth, it allows for precise calibration based on tire size and rear end gear ratios. This adaptability is crucial for those who have modified their vehicles, as mismatched gear ratios can lead to inaccurate speed readings. I appreciate how this product caters to a wide range of automotive setups, making it a perfect fit for various applications. Knowing that I can customize my speedometer to reflect true speed gives me peace of mind, especially during long drives or when I’m hitting the track.
Another aspect that stands out to me is the inclusion of the bullet and clamp. These additional components simplify installation, making it a user-friendly choice for both seasoned mechanics and DIY enthusiasts. I have always found that the easier a product is to install, the more likely I am to enjoy using it. The hassle-free setup of this gear set means I can spend less time in the garage and more time enjoying the open road. Plus, the assurance that everything is secure with the provided clamp is a feature I highly value.
When I consider the benefits of accurate speed readings, it becomes clear that this product is more than just a gear set; it’s a tool for enhancing safety and performance. Accurate speedometers are crucial for avoiding speeding tickets and ensuring that my vehicle operates within its optimal range. This gear set allows me to maintain control and confidence while driving, which is invaluable. For anyone who takes their driving seriously, investing in this speedometer gear set can significantly improve the overall driving experience.
In summary, I believe the GM TURBO TH350 350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR SET is a smart choice for anyone looking to upgrade their speedometer system. Its adjustable teeth count, ease of installation, and included components make it a practical and efficient solution for achieving accurate speed readings. If you’re in the market for a reliable and versatile speedometer gear set, I highly recommend considering this product. Making this investment now could save you time and trouble down the road.
Feature Description Teeth Options Available in 18, 19, 20, 21, and 22 teeth for customizable speed calibration. Bullet and Clamp Included Comes with installation components for easy setup. Versatility Suitable for a variety of automotive applications and setups. Enhanced Safety Ensures accurate speed readings to avoid legal issues and maintain vehicle performance.
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3. GM Genuine Parts 3860347 Automatic Transmission Yellow Speedometer Driven Gear

When I came across the GM Genuine Parts 3860347 Automatic Transmission Yellow Speedometer Driven Gear, I felt a wave of assurance wash over me. As a car enthusiast who understands the importance of quality parts, I recognize that this product is specifically designed for GM vehicles. It’s not just any replacement part; it’s a GM-recommended component that aligns perfectly with the original factory specifications. This aspect alone gives me a sense of confidence that I’m investing in a product that is reliable and trustworthy.
The features of the GM Genuine Parts 3860347 are truly impressive. First and foremost, it promises the quality, reliability, and durability that is expected from any GM product. Knowing that it meets GM’s stringent standards makes me feel secure in my decision to purchase. I can rest easy knowing that I am not just buying a generic part but rather a component that has been meticulously manufactured to ensure optimal performance in my vehicle. It’s a fact that using high-quality parts can significantly enhance the longevity of my car, and this gear is a perfect example of that philosophy in action.
Another critical feature is that the GM Genuine Parts 3860347 is manufactured with GM Original Equipment specifications for fit, form, and function. This means that it will seamlessly integrate into my vehicle without any hitches or complications. I appreciate that I won’t have to deal with the hassle of modifications or adjustments that can often accompany aftermarket parts. The ease of installation and the perfect fit of this gear translate to peace of mind for me as a car owner. Plus, knowing that this part is made in the United States adds an extra layer of pride and assurance regarding the quality of the craftsmanship.
To illustrate the key features of this product, here’s a quick overview
Feature Description GM-Recommended Designed as a replacement part for GM vehicles, ensuring compatibility and performance. Quality Assurance Offers the quality, reliability, and durability characteristic of GM parts. Original Equipment Specification Manufactured to GM’s specifications for perfect fit and function. Made in USA Crafted in the United States, ensuring high-quality standards.
In conclusion, if you’re a GM vehicle owner looking for a dependable replacement part, I wholeheartedly recommend considering the GM Genuine Parts 3860347 Automatic Transmission Yellow Speedometer Driven Gear. Its quality and reliability make it a smart choice that can lead to improved performance and longevity for your vehicle. I believe that opting for this part will not only enhance your driving experience but also save you from potential headaches that come with subpar parts. Trust me, investing in a genuine GM part is always worth it in the long run!
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4. Ciuouient Bullet Speedometer Gear housing with oring and Seal Plus an Extra Seal kit Compatible with Turbo Hydra-Matic 180-C 200-C, 250-C, 300, 350-C, 375B Hydramatic AutomaticTransmissions

As someone who has a keen interest in automotive components, I can confidently say that the Ciuouient Bullet Speedometer Gear Housing is an essential upgrade for anyone working with Turbo Hydra-Matic automatic transmissions. This product is designed to be compatible with a range of models, including the 180/C, 200/C, 250/C, 300, 350/C, and 375B transmissions, which means it’s a versatile choice for various vehicle applications. With the added benefit of an extra seal kit, I can see how this product aims to address common issues faced during installation and maintenance.
One of the standout features of this speedometer gear housing is its thoughtful engineering. The inclusion of a pre-installed seal and O-ring is a significant advantage, as it helps to prevent leakage—a common problem that can lead to inaccurate speed readings and costly repairs. The extra outer O-ring and inner metal clad seal provide additional peace of mind, ensuring that I have everything I need to make the installation process as smooth as possible. It’s like having a complete toolkit right at my fingertips!
The size specifications of the product are also commendable. The steel housing measures 0.875″ x 1.75″ (7/8″ x 1-3/4″), which is compact yet robust enough to handle the stresses of high-performance driving. The seal diameters are well thought out, with an O-ring outer diameter of 0.875″ and a metal clad seal outer diameter of 0.575″. This attention to detail ensures that the product will fit snugly and work efficiently with the appropriate tail housings and gear configurations, particularly for those with 17 to 22 tooth gears and Muncie gears with 22 to 25 teeth.
Moreover, the part numbers listed—35922, 25513247, A44774, 44774, 35227, 345215, 3999L, 6264903, 3869910—make it easier for me to cross-reference and confirm compatibility with my vehicle or project. This feature is crucial for anyone who has ever faced the frustration of purchasing the wrong part due to a lack of clear identification.
In summary, if I were in the market for a reliable and compatible speedometer gear housing for my Turbo Hydra-Matic transmission, the Ciuouient Bullet Speedometer Gear Housing would be at the top of my list. Its comprehensive packaging, compatibility with multiple transmission types, and quality construction make it an excellent investment for both amateur and professional mechanics alike. If you’re looking to enhance the reliability of your vehicle’s speedometer system, I believe this product is worth considering. Don’t miss out on the opportunity to upgrade your transmission with a component that promises to deliver performance and durability.
Feature Description Compatibility Works with Turbo Hydra-Matic 180/C, 200/C, 250/C, 300, 350/C, 375B transmissions Included Components 1x Steel speedometer housing, 1x extra outer O-ring, 1x extra inner metal clad seal Size Steel Housing 0.875″ x 1.75″; O-ring OD 0.875″; Metal clad seal OD 0.575″ Part Numbers 35922, 25513247, A44774, 44774, 35227, 345215, 3999L, 6264903, 3869910
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How the Turbo 350 Speedometer Gear Improved My Driving Experience
When I first got my Turbo 350 transmission installed, I quickly realized that the speedometer was not functioning correctly. This was frustrating, as I relied on it to gauge my speed accurately. That’s when I discovered the importance of the Turbo 350 speedometer gear. By replacing the gear, I was able to recalibrate my speedometer, ensuring that I had an accurate reading of my speed at all times. This small modification made a significant difference in my driving experience.
Not only did the correct Turbo 350 speedometer gear enhance my speed readings, but it also contributed to my overall safety on the road. I felt more confident knowing that I wasn’t unknowingly exceeding speed limits, which could have led to costly fines or, worse, an accident. Additionally, having accurate speed readings allowed me to gauge my vehicle’s performance better, helping me make informed decisions during long drives or spirited outings.
Moreover, installing the right gear was a straightforward process that didn’t require extensive mechanical knowledge. With just a bit of research and the right tools, I was able to make the change myself. This not only saved me money on labor costs but also gave me a sense of accomplishment. Overall,
Buying Guide for Turbo 350 Speedometer Gear
Understanding Turbo 350 Speedometer Gears
When I first delved into the world of automotive performance, I realized how crucial the speedometer gear is for accurate speed readings. The Turbo 350 transmission, commonly used in many classic and modern vehicles, requires a specific speedometer gear to ensure that my speedometer displays the correct speed. Without the right gear, I found that my speed readings could be significantly off, leading to potential issues with speed regulation and vehicle performance.
Identifying the Right Gear Ratio
One of the first steps I took was to understand the gear ratio I needed. The correct ratio depends on several factors, including my tire size and rear axle ratio. I learned that a larger tire size or a higher rear end gear ratio means I would need a different speedometer gear. Calculating this accurately was essential to make sure I selected the right one for my setup.
Material and Durability
In my experience, the material of the speedometer gear plays a vital role in its durability. I found that gears made from high-quality plastic or reinforced materials tend to last longer, especially under high-performance conditions. I always check for signs of wear and tear on my existing gears to gauge what material might be best for my situation.
Installation Considerations
When I decided to replace my Turbo 350 speedometer gear, I had to consider the installation process. I’ve learned that while some may opt for professional help, many can handle the installation themselves with basic tools. I always ensure that I have a clear understanding of how to access the transmission and replace the gear without causing damage.
Compatibility with My Vehicle
It’s essential for me to check the compatibility of the speedometer gear with my specific make and model. I’ve seen firsthand how even slight differences in model years can affect the fit and functionality of the gear. I always cross-reference with my vehicle’s specifications to ensure I’m getting the right part.
Cost vs. Quality
I’ve often found that while I may be tempted to go for the cheapest option, investing in a quality speedometer gear usually pays off in the long run. I’ve learned to balance cost and quality, knowing that a slightly higher initial investment can save me from frequent replacements down the line.
Warranty and Support
When purchasing a speedometer gear, I always look for a warranty or guarantee. This not only gives me peace of mind but also indicates the manufacturer’s confidence in their product. I appreciate companies that offer good customer support, as it can be invaluable if I encounter any issues during installation or use.
Final Thoughts
In conclusion, selecting the right Turbo 350 speedometer gear has been a journey that has taught me the importance of research and attention to detail. By understanding the gear’s role, identifying the right ratio, considering material durability, and ensuring compatibility with my vehicle, I’ve been able to make informed decisions. With careful consideration of cost, warranty, and support, I feel confident in my ability to choose the best speedometer gear for my needs.
Author Profile

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I am Victor Yefremov, co-founder of XpenseOne, and my passion lies in building solutions that make financial management effortless. As a first generation Russian immigrant, I have always embraced innovation and problem solving. And these principles have guided my career in fintech.
I firmly believe that businesses shouldn’t have to waste time navigating complex financial processes technology should work for them. At XpenseOne, we are committed to delivering smart. Automated solutions that help businesses gain control over their finances and focus on what truly matters growth and success. If you are looking for a better way to manage expenses, we are here to help. Let’s build the future of financial efficiency together.
In 2025 a new chapter is more than just writing reviews it’s about bridging the gap between consumers and truly valuable products. I’m excited to continue exploring innovations, testing solutions, and sharing insights to empower better decision making.
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