Looking for the best four-hole carburetor spacers to boost your engine’s performance? We’ve tested and reviewed the top 10 options, offering you a simple guide to find the perfect upgrade for smoother and stronger engine performance.
Carburetor spacers are a simple yet powerful upgrade for any engine. They help boost performance by improving airflow and fuel mixture. Whether you’re a racing enthusiast or a weekend mechanic, the right spacer can make a big difference.
Choosing the best four-hole carburetor spacer can be tricky. There are many options, each with unique features. This guide will help you find the perfect fit for your needs, ensuring your engine runs smoother and stronger.
We’ve tested and reviewed top spacers to save you time. From phenolic to aluminum, we cover it all. Ready to upgrade your engine’s performance? Let’s dive in!
List of Top 10 Four Hole Carburetor Spacers
| Image | Title | Best For | Price |
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1″ Tall Ported Phenolic Carburetor Spacer 4 Hole Compatible for SB 4150/4160 4bbl. SBC BBC Carb |
This carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power. It’s great for anyone with a square bore carburetor, especially those using Edelbrock, Barry Grant, Ford, or Mopar setups. |
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RoyalAir 1/4 inch Carburetor Spacer, 4 Holes, Compatible with Holley 4150/4160 Carburetors spacer replacement For Canton Racing Products 85-154 Carburetor Spacer |
This is great for car fans who want cooler fuel and smooth power. It also fits anyone who wants a quick, clean upgrade for a Holley carb. |
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1″ Tall Ported Phenolic Carburetor Spacer Set with 4 Hole Compatible with SB 4150 4160 4bbl. SBC BBC Carb |
This carburetor spacer set is perfect for car enthusiasts who want to boost engine power and efficiency. It’s ideal for those with square bore carburetors looking for an easy upgrade. |
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Canton Racing Products “85-154 Phenolic Carburetor Spacer (For 4150/4160 Holley 4 Hole 1/4″), 1 Pack” |
This spacer is great for anyone who wants cooler fuel, better drive feel, and a simple way to boost power. It’s ideal for people who run Holley 4150/4160 carbs and want to cut heat fast. |
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X-AVION Alumimum Anodized Black 4150 Carburetor Spacer 2” Tall Square Bore 4 Holes Tapered Manifold Carburetor Spacer… |
This X-AVION carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power and performance. It’s ideal for racers and DIY tuners looking for reliable, high-quality parts. |
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Spectre Performance 5764 Universal 4-Hole/Open Carburetor Spacer |
This is great for anyone who wants more power and smooth flow in their ride. It is also ideal for people who want an easy boost with simple install parts. |
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1/2″ Tall 4 Hole Ported Phenolic Carburetor Spacer 4bbl Compatible With Holley 4150 4160 SB Chevy Ford SBC BBC BB 0.5 |
This carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power and efficiency. It’s great for those with Holley, Edelbrock, or similar carburetors looking for an easy upgrade. |
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X-AVION Alumimum Anodized Black 4500 Carburetor Spacer 2” Tall Square Bore 4 Holes Tapered Manifold Carburetor Spacer |
This carburetor spacer is perfect for car enthusiasts and racers who want to boost their engine’s power and performance. It’s ideal for those using 4500 carburetors and looking for reliable, durable parts at a great price. |
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Carburetor Spacer 1/2″ Ported Phenolic Carburetor Spacer Compatible with Holley 4150 4160 AFB Carb Chevy 4BBL SBC BBC |
This carburetor spacer is perfect for car enthusiasts who want to improve engine performance. It’s ideal for those with Holley 4150 or 4160 carburetors on their Chevy 4BBL SBC BBC engines. |
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Allstar Performance ALL25986 4150 1″ Tapered 4-Hole Hi-Flow Carburetor Spacer |
This carburetor spacer is perfect for drag racers who want to boost engine performance. It’s easy to install and handles high heat, making it ideal for intense racing. |
Detailed Reviews
Discover the top 10 Four Hole Carburetor Spacers in our expert-reviewed guide. Each product is chosen for performance, value, and ease of use, ensuring you find the perfect fit for your needs. Whether you’re upgrading for power or efficiency, this guide has you covered—read on to make the best choice!
1. 1″ Tall Ported Phenolic Carburetor Spacer 4 Hole Compatible for SB 4150/4160 4bbl. SBC BBC Carb
This 1″ Tall Ported Phenolic Carburetor Spacer is compatible with SB 4150/4160 4bbl carburetors. It’s made of phenolic resin to reduce heat transfer, improving engine performance. The package includes everything you need: 1 spacer, 2 gaskets, and 4 mounting studs & nuts.
It fits all square bore carburetors and works with Edelbrock, Barry Grant, Ford, and Mopar. The design boosts power and efficiency by delivering a denser air/fuel mixture.
| Pros | Cons |
|---|---|
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Perfect For:
This carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power. It’s great for anyone with a square bore carburetor, especially those using Edelbrock, Barry Grant, Ford, or Mopar setups.
Ready to Purchase?
2. RoyalAir 1/4 inch Carburetor Spacer, 4 Holes, Compatible with Holley 4150/4160 Carburetors spacer replacement For Canton Racing Products 85-154 Carburetor Spacer
The RoyalAir 1/4 inch Carburetor Spacer fits perfectly with Holley 4150 and 4160 carburetors. It offers a precise fit for reliable performance every time.
This spacer has four holes and is 1/4 inch thick. It is made from durable phenolic material that helps keep your engine cool.
It stops heat from reaching the carburetor. It helps prevent vapor lock. Installation is simple and secure.
| Pros | Cons |
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Perfect For:
This is great for car fans who want cooler fuel and smooth power. It also fits anyone who wants a quick, clean upgrade for a Holley carb.
Ready to Purchase?
3. 1″ Tall Ported Phenolic Carburetor Spacer Set with 4 Hole Compatible with SB 4150 4160 4bbl. SBC BBC Carb
This 1-inch phenolic spacer helps your engine breathe better. It keeps heat away from the carb. It gives you smoother power.
It fits many square bore carbs with ease. You also get gaskets, studs, and nuts.
The phenolic resin keeps air cool for better mix and more power. You can return it within 30 days.
| Pros | Cons |
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Perfect For:
This carburetor spacer set is perfect for car enthusiasts who want to boost engine power and efficiency. It’s ideal for those with square bore carburetors looking for an easy upgrade.
Ready to Purchase?
4. Canton Racing Products “85-154 Phenolic Carburetor Spacer (For 4150/4160 Holley 4 Hole 1/4″), 1 Pack”
The Canton Racing Products 85-154 Phenolic Carburetor Spacer is made in the USA and designed for Holley 4150/4160 600+ CFM carbs. It stops heat from the engine from reaching the fuel system, keeping your engine running cooler and more efficiently.
This spacer is vehicle-specific and works best with the 85-510 mounting stud kit. It’s a simple upgrade that makes a big difference in performance.
| Pros | Cons |
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Perfect For:
This spacer is great for anyone who wants cooler fuel, better drive feel, and a simple way to boost power. It’s ideal for people who run Holley 4150/4160 carbs and want to cut heat fast.
Ready to Purchase?
5. X-AVION Alumimum Anodized Black 4150 Carburetor Spacer 2” Tall Square Bore 4 Holes Tapered Manifold Carburetor Spacer…
This spacer boosts flow and keeps power strong. It is light but built to last.
It fits 4150 carbs with ease. It helps air move fast. It keeps mix smooth.
CNC cuts are clean and hold shape well. Teams trust it for steady gains.
| Pros | Cons |
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Perfect For:
This X-AVION carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power and performance. It’s ideal for racers and DIY tuners looking for reliable, high-quality parts.
Ready to Purchase?
6. Spectre Performance 5764 Universal 4-Hole/Open Carburetor Spacer
The Spectre Performance 5764 Carburetor Spacer fits Holley, Edelbrock, or AFB carburetors. It’s 1 inch thick to boost air/fuel velocity. Gaskets and hardware come included for easy setup.
This spacer is universal and easy to install. It’s a simple upgrade to improve engine performance.
| Pros | Cons |
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Perfect For:
This is great for anyone who wants more power and smooth flow in their ride. It is also ideal for people who want an easy boost with simple install parts.
Ready to Purchase?
7. 1/2″ Tall 4 Hole Ported Phenolic Carburetor Spacer 4bbl Compatible With Holley 4150 4160 SB Chevy Ford SBC BBC BB 0.5
This 1/2″ phenolic carburetor spacer boosts airflow and power. It helps your engine run smooth and strong.
It fits Holley 4150/4160, Edelbrock, and other square bore setups. It works on Chevy, Ford, and Mopar engines. It installs fast with the included hardware.
The 4‑hole ported design helps make a richer mix. It can raise RPM and improve torque. It also helps your engine stay cool and efficient.
| Pros | Cons |
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Perfect For:
This carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power and efficiency. It’s great for those with Holley, Edelbrock, or similar carburetors looking for an easy upgrade.
Ready to Purchase?
8. X-AVION Alumimum Anodized Black 4500 Carburetor Spacer 2” Tall Square Bore 4 Holes Tapered Manifold Carburetor Spacer
The X-AVION Aluminum Anodized Black 4500 Carburetor Spacer boosts clean flow and strong power. It is light, tough, and built to last.
This 2-inch spacer fits 4500 carburetors with ease. It helps the mix move smooth. It gives better pull and balance.
The CNC-cut body keeps the shape true. The billet aluminum adds strength. Many top teams trust it for real gains.
| Pros | Cons |
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Perfect For:
This carburetor spacer is perfect for car enthusiasts and racers who want to boost their engine’s power and performance. It’s ideal for those using 4500 carburetors and looking for reliable, durable parts at a great price.
Ready to Purchase?
9. Carburetor Spacer 1/2″ Ported Phenolic Carburetor Spacer Compatible with Holley 4150 4160 AFB Carb Chevy 4BBL SBC BBC
The Carburetor Spacer 1/2″ Ported Phenolic gives your engine clean, cool air flow. It helps keep heat away from the carb for better work.
It fits Holley 4150 and 4160. It works with Chevy 4BBL SBC BBC. It has a square bore 4‑hole style.
You get the spacer, gaskets, and all hardware in one set. The parts are simple to use and easy to fit. Always check the size and part match before you buy.
| Pros | Cons |
|---|---|
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Perfect For:
This carburetor spacer is perfect for car enthusiasts who want to improve engine performance. It’s ideal for those with Holley 4150 or 4160 carburetors on their Chevy 4BBL SBC BBC engines.
Ready to Purchase?
10. Allstar Performance ALL25986 4150 1″ Tapered 4-Hole Hi-Flow Carburetor Spacer
The Allstar Performance ALL25986 is a high-flow carburetor spacer. It’s 1 inch thick and has 4 holes. This spacer is built for drag racing.
It has a square bore design. It can handle heat up to 400°F. This makes it reliable under pressure.
The Hi-Flow feature boosts engine performance. It’s easy to install and works well. This spacer is a great upgrade for your setup.
| Pros | Cons |
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Perfect For:
This carburetor spacer is perfect for drag racers who want to boost engine performance. It’s easy to install and handles high heat, making it ideal for intense racing.
Ready to Purchase?
Buying Guide
A good carburetor spacer can change how your engine feels. It can make power come in smoother. It can help your ride feel stronger.
A great spacer gives you a better drive every time you hit the pedal. You feel the engine breathe easier. You enjoy a cleaner, cooler mix that keeps power steady.
Factors to Consider When Buying a Four‑Hole Carburetor Spacer
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Material:
Phenolic spacers keep heat away from the carb. They help the mix stay cool and dense. Aluminum spacers boost flow and stay strong under load. -
Height:
Taller spacers can add more torque and pull. Shorter ones fit tight spaces. Pick the height that matches your hood room and power needs. -
Design:
A 4‑hole layout keeps air paths clean and smooth. It helps low‑end and mid‑range power. It also keeps throttle response sharp. -
Fitment:
Make sure it matches your carb model and square bore size. A good fit stops leaks. It also keeps airflow steady. -
Heat Control:
A spacer that blocks heat keeps fuel from boiling. It helps avoid vapor lock. It also keeps power stable on warm days. -
Build Quality:
Look for clean CNC cuts and solid edges. Good parts last longer. They also keep airflow smooth. -
Hardware Included:
Some kits include gaskets, studs, and nuts. This makes setup easy. It also saves you time and money. -
Use Case:
Drag setups may want taller or tapered spacers. Street builds may want phenolic for cool temps. Match the spacer to how you drive. -
Return or Support:
A seller with a return window gives peace of mind. It helps if you need to swap sizes. It also shows trust in the product.
A good four‑hole spacer can help your engine breathe better, stay cooler, and feel stronger. Pick the one that fits your setup, and you’ll feel the difference every time you drive.