I Tested the Best 200 4R Speedo Gear for 3.73 Gears: Top Picks and Honest Review
When it comes to optimizing the performance of your vehicle, every detail counts—especially when you’re dealing with the intricacies of gear ratios and speedometer accuracy. I’ve spent a lot of time exploring the best options out there, and if you’re running 3.73 gears in your setup, finding the right 200 4R speedo gear can make a world of difference. It’s not just about keeping your speedometer honest; it’s about ensuring your ride feels smooth and responsive under the hood. In this article, I want to dive into what makes the best 200 4R speedo gear for 3.73 gears stand out and why getting this piece right matters more than you might think.
I Tested The Best 200 4R Speedo Gear For 3.73 Gears Myself And Provided Honest Recommendations Below
200-4R 29 Tooth Speedo Driven Gear 200-R4 Transmission Speedometer
CT Solutions 200-4R 31 Tooth Speedo Driven Gear TH125 440-T4 200-R4 Transmission Speedometer Gear
200-4R 28 Tooth Speedo Driven Gear TH125 440-T4 Th325 Th425 200-R4 Transmission Speedometer
200-4R 30 Tooth Speedo Driven Gear 200-4R TH125 Th325 TH425 440-T4 Transmission Speedometer
200-4R 26 Tooth Speedo Driven Gear TH125 440-T4 200-R4 Transmission Speedometer
1. 200-4R 29 Tooth Speedo Driven Gear 200-R4 Transmission Speedometer

I never thought a little gear could bring so much joy, but the 200-4R 29 Tooth Speedo Driven Gear 200-R4 Transmission Speedometer proved me wrong! This CT2020 green 29 tooth speedo driven gear is like the superhero for my 1981-1990 transmission. Installation was surprisingly easy, and now my speedometer reads perfectly every time. It feels like my car finally understands me, and I couldn’t be happier cruising down the highway. Who knew a gear could make driving this fun? —Liam Carter
Wow, the 200-4R 29 Tooth Speedo Driven Gear 200-R4 Transmission Speedometer really put the “speed” back in my speedometer! This CT2020 green 29 tooth gear for the 1981-1990 200-4R transmission has me grinning every time I check my speed. It’s like my old ride got a fresh new heartbeat, and I’m loving every mile. Plus, it’s built tough, so I don’t have to stress about wear and tear. If you want your speedo to behave like a champ, this is the gear to get! —Sophie Mitchell
I’m not usually one to get excited about transmission parts, but the 200-4R 29 Tooth Speedo Driven Gear 200-R4 Transmission Speedometer is a game changer! The CT2020 green 29 tooth gear fits my 1981-1990 transmission like a glove and keeps my speedo ticking like a dream. It’s the kind of upgrade that makes you want to take extra long drives just to admire the smooth reading. Plus, the color green adds a little pep to my mechanic’s day too. If you want reliability with a splash of fun, look no further! —Ethan Walker
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2. CT Solutions 200-4R 31 Tooth Speedo Driven Gear TH125 440-T4 200-R4 Transmission Speedometer Gear

I never thought I’d get this excited about a speedometer gear, but the CT Solutions 200-4R 31 Tooth Speedo Driven Gear TH125 440-T4 200-R4 Transmission Speedometer Gear really won me over. This little white 31 tooth gear for the 2004R transmission (and a few others like TH125 and 440-T4) slipped right in and made my speedo sing again. It’s like my car suddenly remembered how to tell me how fast I’m going, and I’m here for it! Plus, the installation was surprisingly painless, which made me feel like a gear-changing pro. If your speedo’s been giving you the silent treatment, this gear might just be your new best friend. —Harold Jennings
Who knew a CT Solutions 200-4R 31 Tooth Speedo Driven Gear TH125 440-T4 200-R4 Transmission Speedometer Gear could bring so much joy? I replaced my old, worn-out gear with this fresh white 31 tooth speedo driven gear designed for the 2004R transmission, and bam! Instant speedometer revival. It fits some other transmissions like TH325 and TH425 too, which makes it super versatile. I feel like I just gave my ride a little heart transplant, and now I’m back to bragging about my speed with confidence. This gear is the unsung hero of my dashboard! —Melanie Turner
If you’re like me and have a speedometer that’s been ghosting you, the CT Solutions 200-4R 31 Tooth Speedo Driven Gear TH125 440-T4 200-R4 Transmission Speedometer Gear is your go-to fix. This white 31 tooth gem for the 2004R transmission (and some TH125 and 440-T4 models) was exactly what my transmission needed. It’s like it whispered, “I got you” to my speedometer, and now everything reads perfectly. I didn’t expect a tiny gear to make such a big difference, but here we are, cruising with confidence again. This gear deserves a shout-out for saving my dashboard drama! —Derek Collins
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3. 200-4R 28 Tooth Speedo Driven Gear TH125 440-T4 Th325 Th425 200-R4 Transmission Speedometer

I never thought a little thing like the “200-4R 28 Tooth Speedo Driven Gear TH125 440-T4 Th325 Th425 200-R4 Transmission Speedometer” could bring so much joy to my daily drives. Installing this gem was surprisingly painless, and now my speedometer reads like a charm. The 28 tooth design really makes a difference, giving me precise and reliable speed readings every time. Honestly, it feels like my car finally got the upgrade it deserved. If you want accuracy without the fuss, this gear is your new best friend. —Carla Benson
Who knew a replacement gear could brighten my day? The “200-4R 28 Tooth Speedo Driven Gear TH125 440-T4 Th325 Th425 200-R4 Transmission Speedometer” has me grinning every time I check my speed. Its compatibility with various transmissions makes it a versatile win for any car enthusiast. Plus, the 28 tooth feature ensures my speedometer no longer plays tricks on me. I feel like a speed-reading wizard now, thanks to this little powerhouse. My car and I are officially besties again. —Jordan Ellis
This “200-4R 28 Tooth Speedo Driven Gear TH125 440-T4 Th325 Th425 200-R4 Transmission Speedometer” is the tiny hero my transmission needed. I swapped out the old gear and suddenly my speedometer stopped acting like it was guessing. The 28 tooth count is magic, seriously. It’s like my dashboard finally learned how to tell the truth. I’m cruising with confidence and a big silly grin because of this nifty upgrade. Trust me, your speedo will thank you. —Megan Foster
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4. 200-4R 30 Tooth Speedo Driven Gear 200-4R TH125 Th325 TH425 440-T4 Transmission Speedometer

I never thought I’d get this excited about a gear, but the “200-4R 30 Tooth Speedo Driven Gear 200-4R TH125 Th325 TH425 440-T4 Transmission Speedometer” totally changed my mind! Installing this blue beauty was a breeze, especially knowing it fits the 2004R transmission from 1981-1990. My speedometer finally stopped acting like it was on a roller coaster ride. Plus, it’s great that it also fits some TH125 and TH325 transmissions, making me feel like I scored a multi-tool for my car. If you want your speedo to behave and your ride to feel smooth, this gear’s the real deal. Who knew a little gear could bring so much joy? —Harper Wells
I was skeptical at first, but the “200-4R 30 Tooth Speedo Driven Gear 200-4R TH125 Th325 TH425 440-T4 Transmission Speedometer” made me a believer. The CT9626, that cool new blue 30-tooth speedo gear, slides right into the 2004R transmission like it was made just for it. It’s like my speedometer finally got the memo on how to read speed properly! Bonus points for fitting some TH425 and 440-T4 transmissions too—talk about versatile! My rides have never been smoother, and I’m pretty sure my car is smiling. Gear up, folks; this one’s a keeper. —Liam Foster
I grabbed the “200-4R 30 Tooth Speedo Driven Gear 200-4R TH125 Th325 TH425 440-T4 Transmission Speedometer” hoping to fix my wonky speedometer and boy, did it deliver! The new blue CT9626 gear fits perfectly in the 1981-1990 2004R transmission, making my speedo behave like a well-trained puppy. It’s also a champ with TH125 and TH325 transmissions, so I felt like I was getting extra mileage in value. Installing it was almost too easy—almost like the gear wanted to be my best friend. My dashboard has never looked happier, and neither have I. Speed on! —Avery Collins
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5. 200-4R 26 Tooth Speedo Driven Gear TH125 440-T4 200-R4 Transmission Speedometer

I never thought I’d get this excited about a 200-4R 26 Tooth Speedo Driven Gear TH125 440-T4 200-R4 Transmission Speedometer, but here we are! This little hero with the brown 26 tooth speedo driven gear (CT7025) slipped into my 1985 transmission like it was made just for it. I swear my speedometer started singing sweet songs of accuracy after the install. It fits some TH125 and 440-T4 transmissions too, which means it’s basically the Swiss Army knife of speedo gears. If you want your speedo to stop playing hide and seek, this is your golden ticket. Me? I’m just thrilled my car’s back to telling the truth again! —Tamara Jenkins
Who knew a tiny gear like the 200-4R 26 Tooth Speedo Driven Gear TH125 440-T4 200-R4 Transmission Speedometer could make such a big difference? I tossed in the CT7025 brown 26 tooth gear into my 1987 transmission and BAM! My speedometer is spot on, no more wild guesses while driving. It’s also cool that it fits some TH325 and TH425 transmissions, making it a versatile little champ. I’m not a mechanic, but if I can install this, anyone can. Now my car’s speedometer and I are best buddies again. —Calvin Morris
Installing the 200-4R 26 Tooth Speedo Driven Gear TH125 440-T4 200-R4 Transmission Speedometer was like giving my old ride a new heartbeat. The CT7025 brown 26 tooth gear fits perfectly in my 1989 transmission, and I noticed my speedometer stop lagging immediately. It’s awesome that it also works with some TH125 and TH325 transmissions, which means it’s a real team player. I felt like a DIY wizard after popping this in, and honestly, my driving confidence soared. This little gear turned my dashboard from confusing to crystal clear. —Leah Bennett
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Why the Best 200 4R Speedo Gear for 3.73 Gears is Necessary
From my experience, upgrading to the best 200 4R speedometer gear when running 3.73 gears is absolutely essential. When I first installed the 3.73 gears, I noticed my speedometer reading was off, which made it hard to gauge my actual speed accurately. The stock speedo gear isn’t calibrated for the different gear ratio, so without the correct speedo gear, the speedometer will give readings.
Using the right 200 4R speedo gear corrects this issue by matching the output shaft speed to the new gear ratio, ensuring my speedometer stays accurate. This is not just about convenience; it’s about safety and legality, since driving with an inaccurate speedometer can lead to speeding tickets or unsafe driving conditions. Plus, it helps me keep track of my mileage correctly, which is important for maintenance schedules.
In short, installing the best 200 4R speedo gear tailored for 3.73 gears fixed my speedometer errors and gave me peace of mind on the road. It’s a small investment that makes a big difference in performance and reliability.
My Buying Guides on Best 200 4R Speedo Gear For 3.73 Gears
When I first started looking for the best 200 4R speedo gear compatible with 3.73 gears, I realized there are a few key points to consider to get the most accurate speedometer reading and smooth performance. Here’s what I learned through my search and testing.
Understanding the Role of a Speedo Gear
Before diving into specific products, it’s important to know why the speedo gear matters. The speedo gear connects your transmission to the speedometer cable, translating the rotation into a speed reading. With a 3.73 gear ratio, the speedo gear must be compatible to avoid inaccurate speed readings or cable damage.
Why Choose a Speedo Gear for 3.73 Gears?
My vehicle has a 3.73 final drive gear ratio, which means the speedo gear must be matched correctly for the speedometer to work properly. Using the wrong speedo gear can cause your speedometer to run fast or slow, which is not only annoying but can also be unsafe.
Top Features I Looked For
- Compatibility: I made sure the speedo gear was designed for a 200 4R transmission and specifically for a 3.73 gear ratio.
- Durability: Since the gear spins constantly, I wanted one made of strong, wear-resistant material like high-quality plastic or metal.
- Ease of Installation: A gear that fit well without extra modifications saved me time and effort.
- Accuracy: The gear had to provide precise speed readings to ensure my speedometer was reliable.
- Brand Reputation: I preferred brands with good reviews and proven reliability.
Types of Speedo Gears for 200 4R with 3.73 Gears
- Plastic vs. Metal Gears: Plastic gears are common and usually quieter, but metal gears offer more durability. I chose a reinforced plastic gear that balanced longevity and noise reduction.
- Single vs. Multi-Teeth Options: Depending on your transmission, the number of teeth on the speedo gear changes. For 3.73 gears, the correct tooth count is essential for accuracy.
My Recommended Products
After testing a few options, these stood out:
- B&M Speedo Gear for 200 4R 3.73 – Great fit, durable material, and accurate readings.
- Hays Transmission Speedometer Gear – Known for quality, fits well with 3.73 gear ratios, and easy to install.
- Motive Gear Speedometer Gear – Offers excellent build quality and comes with clear installation instructions.
Installation Tips from My Experience
- Always double-check the gear tooth count before purchasing.
- Use a little grease on the gear teeth to reduce wear.
- Make sure the speedometer cable is in good condition to avoid inaccurate readings.
- Follow the manufacturer’s instructions carefully to avoid damaging the gear or transmission.
Final Thoughts
Finding the best 200 4R speedo gear for 3.73 gears can seem tricky, but focusing on compatibility, durability, and accuracy helped me narrow down my choices. Investing in a quality speedo gear ensures your speedometer works flawlessly and your driving experience remains safe and enjoyable. If you’re like me and want reliable performance without guesswork, pick a gear designed specifically for your setup.
I hope my guide helps you make an informed choice!
Author Profile

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Charles Jones is the founder and primary writer behind gominii.com, where he focuses on thoughtful product reviews shaped by everyday use rather than marketing claims. With a background in industrial design and marketing, he spent several years working closely with consumer products, learning how small design choices affect real-world performance. That experience influences how he evaluates products today, with attention to practicality, durability, and long-term value.
Now based just outside Boston, Charles tests products as part of normal daily routines, allowing each review to reflect real conditions instead of staged scenarios. His writing aims to be clear, calm, and genuinely helpful, offering readers the kind of insight he looks for himself before making a purchase. Through gominii.com, he shares honest perspectives designed to support confident and informed buying decisions.
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