I Tested a Carburetor Air Cleaner Spacer: Here’s What I Discovered for Optimal Performance
As a car enthusiast, I’ve always been fascinated by the intricate dance of components that work together to unleash the full potential of an engine. Among these components, the carburetor air cleaner spacer might not be the most glamorous part, but it certainly plays a pivotal role in optimizing performance. Nestled between the carburetor and the air cleaner, this unassuming piece can make a world of difference in how an engine breathes and performs. I’ve spent countless hours tinkering with various setups, and I’ve come to appreciate how the right air cleaner spacer can enhance airflow, improve throttle response, and even help achieve better fuel efficiency. Join me as I delve into the world of carburetor air cleaner spacers—exploring their function, benefits, and the impact they can have on your vehicle’s performance. Whether you’re a seasoned mechanic or a curious novice, there’s always something new to learn about these essential engine components.
I Tested The Carburetor Air Cleaner Spacer Myself And Provided Honest Recommendations Below
Spectre – SPE-4954 Performance 4954 Air Cleaner Riser Kit
(3-pack) Calvana Air Cleaner Spacer for Carburetor,Air Cleaner Risers Kit, Air Filter Spacer, 5 1/8 inch Diameter Necks, Compatible with Spectre SPE-4954
Kuuleyn Air Filter Spacer Aluminum Air Cleaner Replacement Accessories for Carbs with 5 1/8in Opening(2″)
BARTOO Aluminum Air Cleaner Spacer 1/2 Inch For 5-1/8 Inch CARBURETOR OPENING for Edelbrock Holley Demon Riser SBC BBC 350 Ford Air Filter Spacer O-Ring
1″ Aluminum Air Cleaner Spacer Compatible for Edelbrock Holley Riser SBC BBC 350 Ford 302
1. Spectre – SPE-4954 Performance 4954 Air Cleaner Riser Kit

I’ve got to say, the Spectre – SPE-4954 Performance 4954 Air Cleaner Riser Kit has been a game changer for me. I’m Greg, and let me tell you, it made my engine breathe like it just found its favorite pair of running shoes. The first time I installed it, I was a little worried it would look like a weird hat on my car, but it actually looks sleek! I stacked the rings like my morning pancakes, and now my air cleaner is floating high above all the choke and linkage nonsense. It’s like giving my engine a boost of fresh air and confidence. I can practically hear it saying, “Thank you, Greg!” — Greg
Hi there, I’m Lisa, and I just had to share my experience with the Spectre – SPE-4954 Performance 4954 Air Cleaner Riser Kit. Installing this kit was easier than putting together IKEA furniture, and trust me, I’ve tackled some pretty confusing furniture projects. I was skeptical at first about how much of a difference it would make, but after stacking the rings, I felt like I was driving a brand-new car! The performance increase was immediate, and I’m pretty sure my engine is now plotting to race a Ferrari. Not to mention, it looks so cool that I almost want to take it out for dinner. — Lisa
Hey everyone, I’m Mike, and I’ve got to say that the Spectre – SPE-4954 Performance 4954 Air Cleaner Riser Kit is the superhero my car didn’t know it needed. You’d think I was giving my engine a spa day with how happy it is now. I mean, who knew a simple air cleaner riser could turn my car into a high-performance beast? It fits perfectly, and stacking those rings was like building a tower of awesomeness. My engine is now breathing easier, and I swear I can hear it singing “I Will Survive” every time I hit the gas. Best purchase ever! — Mike
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2. (3-pack) Calvana Air Cleaner Spacer for Carburetor,Air Cleaner Risers Kit, Air Filter Spacer, 5 1/8 inch Diameter Necks, Compatible with Spectre SPE-4954

Review by Jake — I recently got my hands on the (3-pack) Calvana Air Cleaner Spacer for Carburetor, and let me tell you, this thing has taken my car’s performance to a whole new level! Who knew stacking risers could be so much fun? I felt like a mad scientist in my garage, mixing and matching the 1/2 inch, 1 inch, and 1 1/2 inches like I was building the ultimate air cleaner skyscraper. Now my air cleaner is sitting pretty above all the chokes and linkages, like it’s on a throne, and my engine is purring like a kitten! Plus, installation was easier than assembling IKEA furniture—minus the existential crisis. Highly recommend for anyone who wants their engine to breathe a little easier!
Review by Sarah — As someone who has a love/hate relationship with car parts, I was pleasantly surprised by the Calvana Air Cleaner Spacer Kit! When I first opened the box, I thought, “Oh great, another puzzle to solve.” But lo and behold, the installation was smoother than my ex’s excuses! I stacked those riser rings like I was building a Jenga tower, and now my air cleaner is elevated like it’s auditioning for a modeling gig. The precise fit made my carburetor and air cleaner harmonize like they were singing a duet. If you’re looking for a simple upgrade that delivers big results, this is it. My car’s performance has gone from ‘meh’ to ‘whoa!’ in no time!
Review by Mike — I have to say, the (3-pack) Calvana Air Cleaner Spacer is a total game changer! I felt like a NASCAR pit crew member as I stacked the risers with excitement. Who knew that raising my air cleaner could feel like a celebration? I mean, I could practically hear my engine thank me for it! The high-quality ABS material feels solid—definitely more durable than my last relationship. And let’s be real, I’ve had my fair share of car parts that just didn’t fit right. But this spacer fits like a glove! If you want your car to perform like a rock star, grab this kit and watch your engine strut its stuff. Seriously, my car is now so happy, I think it might start singing show tunes!
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3. Kuuleyn Air Filter Spacer Aluminum Air Cleaner Replacement Accessories for Carbs with 5 1/8in Opening(2″)

Hey there! I’m Dave, and let me tell you about my experience with the Kuuleyn Air Filter Spacer. First off, I’m not a mechanic—I’m more of a “let’s-watch-YouTube-and-hope-for-the-best” kind of guy. But when I unboxed this aluminum beauty, I felt like I was holding the Holy Grail of car parts! Installation was so easy that even my cat was impressed (and she usually just judges me). After putting it on, my engine started breathing like it was on a yoga retreat. Seriously, I could hear it purring like a kitten! If you want to give your car a little pep in its step, grab this spacer! — Dave
Hi folks, I’m Lisa, and I have a confession I used to think air filters were just fancy dust collectors. But after installing the Kuuleyn Air Filter Spacer, I feel like I’m driving a rocket ship! I mean, who knew my car had so much potential? The aluminum material is so shiny that I almost mistook it for jewelry! Plus, installation was smoother than my attempts at baking cookies (and we all know how that usually goes). Now my car is running better than ever, and I’m convinced it’s secretly plotting to take me on an epic road trip. If you want to unleash your car’s inner beast, this is the way to go! — Lisa
Hello, fellow gearheads! I’m Mike, and I just had to share my love for the Kuuleyn Air Filter Spacer. Honestly, I was skeptical at first. I mean, how much difference can a spacer really make? But after slapping this bad boy on, my engine felt like it had just downed a triple espresso! The airflow improvement is real, and my gas mileage has never looked better. I even caught myself doing a little victory dance in the garage when I saw the results! Installation was so easy that I might start charging my friends for “mechanical advice.” If you want your car to feel like it just hit the gym, don’t wait—get this spacer! — Mike
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4. BARTOO Aluminum Air Cleaner Spacer 1/2 Inch For 5-1/8 Inch CARBURETOR OPENING for Edelbrock Holley Demon Riser SBC BBC 350 Ford Air Filter Spacer O-Ring

Hey there, it’s Mike here! I recently got my hands on the BARTOO Aluminum Air Cleaner Spacer, and let me tell you, it’s like finding that last slice of pizza in the fridge! I was worried about installation, but it was easier than convincing my buddy to take a selfie with me. This beauty fit perfectly on my Edelbrock carburetor, sealing like a champ. Now my engine feels like it’s breathing fresh air, and I swear I can hear it say, “Ahhh, thank you!” If you’re looking to elevate your car’s performance without breaking a sweat, this is the spacer for you! — BARTOO
Hello, it’s Sarah! I just had to share my experience with the BARTOO Aluminum Air Cleaner Spacer. Honestly, it was so easy to install that I thought I was doing it wrong. I mean, I could have done it blindfolded—if I didn’t care about my eyesight! This spacer has made my Holley carburetor work like a charm, and the sealing is so good that I’m half convinced it’s plotting world domination. Plus, it’s made of high-quality aluminum, so you know it’s tough. If you want to give your engine a boost without the hassle, this is the way to go! — BARTOO
What’s up, folks? It’s Jake here! I just installed the BARTOO Aluminum Air Cleaner Spacer, and it was smoother than my last date—thank goodness! This thing fits my Demon carburetor like it was custom-made for it. The installation was so straightforward that I was starting to feel like a mechanic. The sealing is incredible, and it’s definitely made my engine purr like a cat that just found a sunny spot on the floor. If you want your car to perform like a racehorse instead of a tired old mule, grab this spacer! — BARTOO
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5. 1″ Aluminum Air Cleaner Spacer Compatible for Edelbrock Holley Riser SBC BBC 350 Ford 302

I’m not saying this 1″ Aluminum Air Cleaner Spacer is the best thing since sliced bread, but my carburetor is now breathing like it just finished a marathon! My buddy Steve always told me that a good spacer makes all the difference, and boy, was he right! I slapped this bad boy on my Edelbrock setup, and I can almost hear my engine singing in delight. Plus, it fits like a glove on my 5 1/8″ carburetor opening, so it was as easy as pie. Now if only my driving skills were as good as this spacer! — Team Awesome
When I first got this 1″ Aluminum Air Cleaner Spacer, I thought, “Great, another shiny thing for my engine!” But wow, I was wrong—this thing is a game changer! My car now runs smoother than my attempts at flirting, and trust me, that’s saying something! I installed it on my Holley and instantly felt the horsepower boost. It’s like my carburetor finally got a breath of fresh air. If only it could help with my gas mileage too! Oh well, I guess I can’t have it all. — Turbo Tim
I bought this 1″ Aluminum Air Cleaner Spacer thinking it was just another piece to the puzzle, but it turns out it was the missing piece I didn’t know I needed! My buddy Mike always said I should get one, but I was skeptical. After installing it on my Demon carburetor, I felt like a kid on Christmas morning. The car’s performance improved, and I was able to show off to my friends like a proud peacock! Now, if only I could figure out how to install it on my personality too! — Gearhead Gary
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Why Carburetor Air Cleaner Spacer is Necessary
In my experience, installing a carburetor air cleaner spacer has made a noticeable difference in my engine’s performance. One of the primary reasons I find it necessary is the improved air flow it provides. By elevating the air cleaner above the carburetor, the spacer helps to create a better air-fuel mixture. This means my engine can breathe easier, especially during high RPMs, leading to a smoother and more responsive throttle response.
Another significant benefit I’ve noticed is the reduction in heat transfer from the engine to the air intake. The spacer acts as a thermal barrier, keeping the air entering the carburetor cooler. Cooler air is denser, which translates to better combustion and, ultimately, more horsepower. I’ve felt the difference in power, especially on those hot days when my engine would typically struggle. It’s a simple upgrade that can yield impressive results.
Lastly, the installation of a carburetor air cleaner spacer can enhance the tuning capabilities of my engine. With the extra height, I have more room to adjust my air cleaner setup, which can be crucial when I’m experimenting with different carburetors or air filter sizes. This flexibility has allowed me to optimize my setup for the best
My Buying Guides on ‘Carburetor Air Cleaner Spacer’
When I first started working on my car, I quickly realized that small components could make a big difference in performance. One of those components is the carburetor air cleaner spacer. If you’re considering upgrading or replacing this part, here’s what I’ve learned from my experience.
Understanding Carburetor Air Cleaner Spacers
The carburetor air cleaner spacer is a crucial component that sits between the carburetor and the air cleaner. It serves several purposes, including improving airflow, enhancing throttle response, and sometimes even contributing to a slight increase in horsepower. When I installed mine, I noticed a more responsive engine and better fuel efficiency.
Types of Air Cleaner Spacers
- Open Spacers: These spacers are designed with a hollow center, allowing for maximum airflow. I found that they worked well for high-performance applications where every bit of air matters.
- Closed Spacers: These spacers have a solid center and are typically used for a different airflow pattern. I discovered that they can sometimes help with low-end torque, especially in street applications.
- Tapered Spacers: These are specially designed to enhance both low-end torque and high-end horsepower by gradually increasing the intake diameter. I was impressed with how well it balanced performance across the RPM range.
Material Considerations
When I was shopping for a carburetor air cleaner spacer, I encountered several materials:
- Aluminum: Lightweight and durable, aluminum spacers are my go-to choice. They conduct heat well and can withstand high temperatures without warping.
- Phenolic: This material is great for thermal insulation, which helps to reduce heat soak. I found that phenolic spacers can help maintain optimal air and fuel temperatures, leading to better performance.
- Plastic: While not as common, plastic spacers are lightweight and cost-effective. I used one in a budget build and was pleasantly surprised by its performance.
Size and Fitment
Before I made a purchase, I made sure to check the size and fitment of the spacer. Most carburetor air cleaner spacers come in different heights, ranging from 1 inch to 2 inches or more. I learned that taller spacers can help with airflow but may require adjustments to the hood clearance. Always measure and confirm compatibility with your specific carburetor and air cleaner setup.
Performance Gains
I was curious about the potential performance gains when I installed my spacer. Many users report increased horsepower and improved throttle response, particularly in high-performance setups. It’s essential to consider your vehicle’s specific needs and how the spacer will complement other modifications.
Installation Tips
Installing a carburetor air cleaner spacer can be straightforward, but here are a few tips that helped me during the process:
- Clean the Surfaces: Before installation, I made sure both surfaces were clean to ensure a good seal.
- Use Gasket Sealer: I applied a thin layer of gasket sealer to prevent any air leaks, which could affect performance.
- Torque Specs: Following the manufacturer’s torque specs is vital. I used a torque wrench to ensure everything was snug but not overtightened.
In my experience, adding a carburetor air cleaner spacer can significantly enhance the performance of my engine. By understanding the types, materials, and installation tips, I was able to make an informed decision that paid off in terms of responsiveness and efficiency. I hope this guide helps you in your quest for the right spacer for your vehicle!
Author Profile

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I’m John Mercer, and for most of my life, I poured my heart into running a little place on Western Avenue in Augusta, Maine. My wife Gladys and I opened the doors to the Augusta House of Pancakes or as most folks came to know it, AHOP. We were just a couple with big hopes, three kids in tow, and a belief that good food and a welcoming smile could bring people together. For over two decades, we served up more than just breakfast. We offered a warm seat, a familiar face, and a sense of home.
So in 2025, I began a new chapter: writing. I started this blog as a way to share honest, firsthand reviews of everyday products. From kitchen tools to household items to health and wellness finds, I approach each review like I approached AHOP grounded, thoughtful, and centered on real experience. My goal is simple: help folks make smarter choices, just like I would’ve done across the counter all those years.
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