Best Carburetor Spacers

Looking for the best carburetor spacers to boost your engine’s performance? We’ve tested and reviewed the top 10 options to help you find the perfect upgrade for your vehicle.

Carburetor spacers are a simple yet powerful upgrade for your engine. They improve airflow and fuel efficiency, giving you more power and better performance. Whether you’re a DIY enthusiast or a pro mechanic, finding the right spacer can make a big difference.

We’ve tested and reviewed the best carburetor spacers on the market. From phenolic to plastic materials, each one is designed to boost your engine’s potential. Our guide makes it easy to choose the perfect fit for your vehicle.

Ready to upgrade your ride? Let’s dive in and find the best carburetor spacer for you!

List of Top 10 Carburetor Spacers

Title	Best For	Price
uxcell Carb Spacers 1″ Tall Open Phenolic Carburetor Spacer for Chevy for Ford 350 SBC BBC BB 4BBL with Gasket Screws Kit	This carburetor spacer kit is perfect for car enthusiasts and DIY mechanics who want to boost engine performance. It’s ideal for Chevy and Ford 350 engines with 4-barrel carbs, offering better RPM and torque.	View on Amazon (paid link)
1 SET Black Carb spacers 1/2″ Tall Open Phenolic Carburetor Spacer Compatible with Holley 4150/4160 4bbl. SBC BBC Carb	This carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power and efficiency. It’s ideal for those with 4-barrel carbs like Holley 4150/4160 or similar models on Chevy, Ford, or Chrysler engines.	View on Amazon (paid link)
Edelbrock 8723 1/2″ Carburetor Spacer	The Edelbrock 8723 Carburetor Spacer is perfect for car enthusiasts who want to boost engine performance. It’s easy to install and fits well with compatible carburetors.	View on Amazon (paid link)
1/2″ Phenolic Carburetor Spacer 4BBL SBC BBC 0.5″	This 1/2″ Phenolic Carburetor Spacer is perfect for car enthusiasts who want to boost engine performance. It’s easy to install and comes with everything you need.	View on Amazon (paid link)
Calvana Air Cleaner Spacer Kit for Carburetor,Air Cleaner Risers Kit, Air Filter Spacer, 5 1/8 inch Diameter Necks, Compatible with Spectre SPE-4954	This Calvana Air Cleaner Spacer Kit is perfect for car enthusiasts and DIY mechanics who want to improve their vehicle’s performance. It’s easy to install and works great for customizing air cleaner setups.	View on Amazon (paid link)
ApplianPar 1″ Carburetor Spacer Adapter Open Center for Holley 4BBL Carter AFB for Edelbrock Carb	This ApplianPar 1″ Carburetor Spacer Adapter is perfect for car enthusiasts who want to boost engine performance. It’s ideal for those with Holley, Carter AFB, or Edelbrock 4BBL carbs looking for an easy upgrade.	View on Amazon (paid link)
Edelbrock 8725 Carburetor Spacer	The Edelbrock 8725 Carburetor Spacer is perfect for car enthusiasts who want to boost their engine’s performance. It’s ideal for those with dual-plane intake manifolds looking to improve low RPM torque and throttle response.	View on Amazon (paid link)
1 Set SHLPDFM Carburetor Spacer 2″ Plastic Phenolic 4 Brl Open Square Bore Flange W/Gaskets And Mounting Hardware Fits 4150 and 4160 series Holley carbs	This carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power. It’s ideal for those with Holley or Edelbrock carburetors looking for better performance and cooler fuel temperatures.	View on Amazon (paid link)
1″ Ported Phenolic Carburetor Spacer 4bbl SBC BBC BB Compatible for Holley SB Chevy Ford	This 1″ Ported Phenolic Carburetor Spacer is perfect for car enthusiasts who want to boost engine performance. It’s great for Holley, Edelbrock, and other square bore carburetors, fitting Chevy, Ford, and Mopar engines.	View on Amazon (paid link)
1 SET Black Carb spacers 1″ Tall Open Phenolic Carburetor Spacer Compatible with Holley 4150/4160 4bbl. SBC BBC Carb	This carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power and efficiency. It’s ideal for those with Small/Big Block Chevy, Ford, or Chrysler Mopar engines using 4-barrel carbs like Holley 4150/4160.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 carburetor spacers designed to boost engine performance and efficiency. Each product is handpicked based on expert reviews and customer feedback, ensuring you get the best value. Whether you’re upgrading for power, torque, or ease of installation, this guide has you covered. Dive in to find the perfect spacer for your engine needs!

1. uxcell Carb Spacers 1″ Tall Open Phenolic Carburetor Spacer for Chevy for Ford 350 SBC BBC BB 4BBL with Gasket Screws Kit

Boost your engine’s power with the uxcell Carb Spacers. Designed for Chevy and Ford 350 engines, it fits 4-barrel carburetors perfectly.

Made from durable Phenolic, it resists heat and corrosion. Its 4-hole open center design improves airflow, increasing RPM and torque.

Easy to install, the kit includes gaskets, screws, studs, and nuts. It’s a complete package for a smooth upgrade.

Pros	Cons
Boosts engine power with open center design. Durable phenolic material resists heat and corrosion. Complete kit for easy installation. Fits Chevy, Ford, and more with 4-barrel carbs.	Not for all engines, check compatibility before buying. Requires tools for installation, not plug-and-play. No instructions included, might confuse beginners.

Perfect For:

This carburetor spacer kit is perfect for car enthusiasts and DIY mechanics who want to boost engine performance. It’s ideal for Chevy and Ford 350 engines with 4-barrel carbs, offering better RPM and torque.

Ready to Purchase?

View Price on Amazon (paid link)

2. 1 SET Black Carb spacers 1/2″ Tall Open Phenolic Carburetor Spacer Compatible with Holley 4150/4160 4bbl. SBC BBC Carb

This carburetor spacer is compatible with many engines. It works with 4-barrel carbs like Holley, Barry Grant, and Edelbrock. It fits Small/Big Block Chevy, Ford, and Chrysler Mopar engines.

The phenolic material reduces heat transfer from the intake manifold. This creates a denser air/fuel mixture for more power and efficiency. It’s 0.5 inches thick, perfect for performance upgrades.

The open design increases plenum volume for high RPM power. The 4-hole design boosts low-speed and mid-range torque. The package includes mounting hardware and gaskets.

Pros	Cons
Boosts engine power and efficiency with phenolic material. Fits Holley, Barry Grant, Carter, and Edelbrock carbs. Improves high RPM power with open design. Enhances low-speed and mid-range torque with 4-hole design.	Not universal fit – Check compatibility before buying. Open design – May not suit all engine setups. Phenolic material – Less durable than metal spacers.

Perfect For:

This carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power and efficiency. It’s ideal for those with 4-barrel carbs like Holley 4150/4160 or similar models on Chevy, Ford, or Chrysler engines.

Ready to Purchase?

View Price on Amazon (paid link)

3. Edelbrock 8723 1/2″ Carburetor Spacer

The Edelbrock 8723 is a 1/2″ carburetor spacer made from wood fiber laminate. It’s lightweight and durable, perfect for improving engine performance.

This spacer measures 8.25″ L x 11.5″ H x 0.75″ W and weighs just 0.75 pounds. It’s made in the United States and comes with the part number EDL-8723.

Easy to install, fits well, and boosts efficiency. A great choice for your carburetor needs.

Pros	Cons
Lightweight design ensures easy installation and minimal engine strain. Durable wood fiber laminate withstands heat and resists warping. Made in the USA, guaranteeing quality and reliability. Precise fit with part number EDL-8723 for seamless compatibility.	Not for high-performance engines, limits power gains. Wood fiber material may warp under heat. No installation kit, extra parts needed.

Perfect For:

The Edelbrock 8723 Carburetor Spacer is perfect for car enthusiasts who want to boost engine performance. It’s easy to install and fits well with compatible carburetors.

Ready to Purchase?

View Price on Amazon (paid link)

4. 1/2″ Phenolic Carburetor Spacer 4BBL SBC BBC 0.5″

The 1/2″ Phenolic Carburetor Spacer is a must-have for SBC BBC engines. It’s made of phenolic plastic, which is strong and heat-resistant. This spacer helps boost engine performance.

It comes with all parts needed for easy installation. The package includes a spacer, gaskets, bolts, washers, and nuts. Everything fits perfectly for a smooth setup.

You get a 6-month warranty for peace of mind. If you’re not happy, get a 100% refund within 30 days. This spacer is a reliable choice for your engine needs.

Pros	Cons
Durable phenolic plastic ensures long-lasting performance. Open spacer style boosts engine efficiency and power. Complete kit includes all parts for easy installation. 6-month warranty and 30-day refund guarantee satisfaction.	No performance data provided for this carburetor spacer. Limited warranty covers only six months. Open spacer style may not suit all engine setups.

Perfect For:

This 1/2″ Phenolic Carburetor Spacer is perfect for car enthusiasts who want to boost engine performance. It’s easy to install and comes with everything you need.

Ready to Purchase?

View Price on Amazon (paid link)

5. Calvana Air Cleaner Spacer Kit for Carburetor,Air Cleaner Risers Kit, Air Filter Spacer, 5 1/8 inch Diameter Necks, Compatible with Spectre SPE-4954

Calvana Air Cleaner Spacer Kit for Carburetor,Air Cleaner Risers Kit, Air Filter Spacer, 5 1/8 inch Diameter Necks, Compatible with Spectre SPE-4954

The Calvana Air Cleaner Spacer Kit is a must-have for carburetor setups. It raises air cleaners above chokes and linkages, improving functionality. This kit is compatible with Spectre SPE-4954.

The riser rings can be stacked for custom heights, and the ABS material ensures durability. It’s easy to install and fits 5/8-inch carburetor openings perfectly.

Pros	Cons
Raises air cleaners for better performance and fit. Stackable risers for custom height adjustments. Durable ABS material ensures long-lasting use. Precise fit for 5/8-inch carburetor openings.	Limited compatibility with non-5 1/8 inch carburetor setups. Plastic material may not suit high-heat applications. Stacking rings can add bulk, affecting space-tight installs.

Perfect For:

This Calvana Air Cleaner Spacer Kit is perfect for car enthusiasts and DIY mechanics who want to improve their vehicle’s performance. It’s easy to install and works great for customizing air cleaner setups.

Ready to Purchase?

View Price on Amazon (paid link)

6. ApplianPar 1″ Carburetor Spacer Adapter Open Center for Holley 4BBL Carter AFB for Edelbrock Carb

The ApplianPar Carburetor Spacer Adapter is a 1-inch thick upgrade for your engine. It fits Holley, Carter, and Edelbrock carburetors with ease. Its open center design boosts airflow for better performance.

This spacer works with 4-barrel carbs and has a square bore base. It comes with gaskets, studs, and nuts for easy installation. Everything you need is included in the package.

The ApplianPar Spacer improves engine efficiency and power. It’s a simple yet effective upgrade for your vehicle.

Pros	Cons
Boosts engine performance with 1-inch thickness. Fits Holley, Carter, and Edelbrock carbs perfectly. Open center design improves airflow and power. Includes gaskets and mounting hardware for easy install.	No instructions included, might confuse first-time users. Limited compatibility, not universal for all carburetors. Open center design may reduce vacuum efficiency in some setups.

Perfect For:

This ApplianPar 1″ Carburetor Spacer Adapter is perfect for car enthusiasts who want to boost engine performance. It’s ideal for those with Holley, Carter AFB, or Edelbrock 4BBL carbs looking for an easy upgrade.

Ready to Purchase?

View Price on Amazon (paid link)

7. Edelbrock 8725 Carburetor Spacer

The Edelbrock 8725 Carburetor Spacer is a simple upgrade for your engine. It fits dual-plane intake manifolds perfectly.

This spacer boosts low RPM torque and improves throttle response. It includes heat-insulating phenolic fiber for better performance. The divided-wall design speeds up the air and fuel mixture.

With a 0.5-inch thickness and natural finish, it’s easy to install. This spacer is a smart choice for enhancing engine efficiency. It works well with most setups.

Pros	Cons
Boosts low RPM torque for better performance. Improves throttle response with divided-wall design. Fits dual-plane intakes perfectly, no hassle. Heat-insulating phenolic fiber keeps temps under control.	Not for high RPM engines, limits top-end power. Natural finish may not match all engine styles. Phenolic fiber adds weight, minimal but present.

Perfect For:

The Edelbrock 8725 Carburetor Spacer is perfect for car enthusiasts who want to boost their engine’s performance. It’s ideal for those with dual-plane intake manifolds looking to improve low RPM torque and throttle response.

Ready to Purchase?

View Price on Amazon (paid link)

8. 1 Set SHLPDFM Carburetor Spacer 2″ Plastic Phenolic 4 Brl Open Square Bore Flange W/Gaskets And Mounting Hardware Fits 4150 and 4160 series Holley carbs

The SHLPDFM Carburetor Spacer is a 2-inch plastic phenolic spacer designed to boost engine performance. It fits 4150 and 4160 series Holley carbs and most square bore carburetors, but not spread bore or Quadra-jet models.

This spacer reduces fuel temperature, increases mid-range torque, and comes with all mounting hardware. It’s made of high-quality, durable material for long-lasting use.

Pros	Cons
Boosts engine power with cooler fuel and denser air/fuel mix. Fits Holley 4150/4160 and most square bore carbs. Open design increases mid-range torque for better performance. High-quality aluminum ensures long-lasting durability. Complete kit includes all mounting hardware for easy install.	Not for all carbs: No fit for spread bore or Quadra-jet. Open design may not suit all engines or performance needs. Plastic material might not be as durable as metal options.

Perfect For:

This carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power. It’s ideal for those with Holley or Edelbrock carburetors looking for better performance and cooler fuel temperatures.

Ready to Purchase?

View Price on Amazon (paid link)

9. 1″ Ported Phenolic Carburetor Spacer 4bbl SBC BBC BB Compatible for Holley SB Chevy Ford

This carburetor spacer is a 1-inch tall part that improves engine performance. It works with many carburetor brands and engine types.

It fits Holley, Edelbrock, and more. Works with Chevy, Ford, and Mopar engines. Includes bolts, washers, nuts, and gaskets.

Easy to install with the included hardware. Boosts airflow and power. Great for square bore carburetors.

Pros	Cons
Boosts engine power with 1″ ported design. Fits Holley, Edelbrock, and more square bore carbs. Includes all bolts, washers, and gaskets for easy install. Improves airflow for better performance.	No instructions included, might confuse first-time users. Limited height (1″), may not suit all engine setups. Gaskets could wear out faster with heavy use.

Perfect For:

This 1″ Ported Phenolic Carburetor Spacer is perfect for car enthusiasts who want to boost engine performance. It’s great for Holley, Edelbrock, and other square bore carburetors, fitting Chevy, Ford, and Mopar engines.

Ready to Purchase?

View Price on Amazon (paid link)

10. 1 SET Black Carb spacers 1″ Tall Open Phenolic Carburetor Spacer Compatible with Holley 4150/4160 4bbl. SBC BBC Carb

This carburetor spacer is 1 inch tall and made of phenolic material. It’s compatible with Holley 4150/4160 and other 4-barrel carbs. Perfect for Small/Big Block Chevy, Ford, and Chrysler Mopar engines.

The phenolic material reduces heat transfer, giving a denser air/fuel mix. This boosts power and efficiency. It’s engineered for better performance.

The open design increases plenum volume, improving high RPM power. The 4-hole design speeds up mixture velocity, enhancing low-speed and mid-range torque. Mounting hardware and gaskets are included.

Pros	Cons
Boosts engine power with phenolic material for better fuel mix. Fits Holley 4150/4160 and other 4-barrel carbs easily. Improves high RPM power with open design spacers. Includes all hardware and gaskets for quick install.	Not universal fit – Check compatibility before buying. Requires installation – Some tools and skill needed. Open design – May not suit all engine setups.

Perfect For:

This carburetor spacer is perfect for car enthusiasts who want to boost their engine’s power and efficiency. It’s ideal for those with Small/Big Block Chevy, Ford, or Chrysler Mopar engines using 4-barrel carbs like Holley 4150/4160.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Carburetor spacers are a simple upgrade that can boost your engine’s power. They improve airflow and fuel efficiency, giving you better performance.

Choosing the right carburetor spacer can make a big difference in your vehicle’s performance. Here’s what to consider when buying one:

Material:
Choose between phenolic, plastic, or wood fiber laminate. Phenolic resists heat and corrosion, while plastic is lightweight and durable. Wood fiber laminate is also a good option for some engines.
Thickness:
Spacers come in different heights like 1/2 inch, 1 inch, or 2 inches. Thicker spacers increase plenum volume, boosting high RPM power. Thinner ones improve low-speed and mid-range torque.
Compatibility:
Make sure the spacer fits your carburetor type (like 4-barrel) and engine model (e.g., Chevy, Ford, Mopar). Check for compatibility with brands like Holley, Edelbrock, or Carter.
Design:
Look for open center or ported designs to improve airflow. A 4-hole design can enhance mixture velocity and torque. Some spacers also reduce heat transfer for a denser air/fuel mix.
Installation:
Choose a spacer that comes with gaskets, bolts, washers, and nuts for easy installation. A complete kit saves time and ensures a smooth upgrade.
Warranty:
Some spacers offer a warranty or refund policy. This gives you peace of mind if the product doesn’t meet your expectations.

With these factors in mind, you’ll find the perfect carburetor spacer to upgrade your ride and boost your engine’s potential.