Best Carburetor Spacers

Looking for the best carburetor spacers to boost your engine’s performance? We’ve tested and reviewed the top 10 options, from phenolic to aluminum, to help you find the perfect fit for your ride.

Carburetor spacers are a simple yet powerful upgrade for your engine. They boost airflow, power, and torque, making your ride perform better. Whether you’re a DIY enthusiast or a pro mechanic, finding the right spacer can transform your engine’s performance.

We’ve tested and reviewed the best carburetor spacers on the market. From phenolic to aluminum, we’ve got you covered. Let’s dive in and find the perfect fit for your engine!

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)
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 8723 1/2″ Carburetor Spacer	This carburetor spacer is ideal for car enthusiasts or mechanics seeking to improve engine performance. Its 1/2″ design ensures a precise fit, while the wood fiber laminate offers strong, heat-resistant support. Easy to install, it’s built to last in United States-made quality.	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 great for those with dual-plane intake manifolds looking to improve low RPM torque and throttle response.	View on Amazon (paid link)
1″ Aluminum Carb Carburetor Spacer W/ 3/8″ Vacuum Tube fits F-ord M-opar Holley	This 1″ Aluminum Carburetor Spacer is perfect for car enthusiasts who want to boost their engine’s power. It’s great for H-OLLEY, CHEVY, Ford, and M-opar owners with square hole carburetors.	View on Amazon (paid link)
Spectre Performance 5776 1″ Open Carb Spacer with Tube	This product is perfect for car enthusiasts with Holley, Edelbrock, or Carter AFB carburetors. It boosts power by raising air/fuel velocity and uses precision die-cast aluminum for strong, lightweight performance. Gaskets and hardware come included for easy setup.	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 ideal for those with Holley, Edelbrock, or Barry Grant carburetors on Chevy, Ford, or Mopar engines.	View on Amazon (paid link)
YUCHENSHLP Carb Spacer 2″ Aluminum 4 Br Open Carburetor Spacer Flange Carb Carburetor Spacer W/Gaskets Holley	This carb spacer is perfect for car enthusiasts who want to upgrade their engine’s performance. It’s ideal for those with Holley or Edelbrock carburetors looking for a reliable, easy-to-install solution.	View on Amazon (paid link)
1 SET Black Carb spacers 2″ Tall Ported 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 great for those with Holley, Barry Grant, Carter, or Edelbrock carbs on Chevy, Ford, or Chrysler engines.	View on Amazon (paid link)
2″ Open Phenolic Carburetor Spacer for Holley 4150 4160 4 Barrel Carb – Compatible with SBC BBC Small Block Big Block Chevy Engine	This 2″ open phenolic carburetor spacer is perfect for car enthusiasts, mechanics, and DIYers upgrading Holley 4150/4160 carbs on SBC, BBC, Ford, or Mopar engines. It boosts high RPM power, torque, and airflow for better engine performance.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 carburetor spacers handpicked for performance and value. Each product is expert-reviewed and backed by customer feedback, ensuring you find the perfect fit for your engine. Whether you’re upgrading for power, efficiency, or durability, this guide has you covered.

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

The uxcell Carb Spacers are designed for 4-barrel carburetors on engines like Chevy and Ford 350 SBC BBC BB 4BBL. They fit square bore setups and come with all parts needed for installation.

Made from durable Phenolic material, these spacers resist heat and corrosion. They also boost engine power by improving airflow and increasing RPM and torque.

The kit includes a spacer, gaskets, screws, studs, and nuts. Easy to install and built to last.

Pros	Cons
Boosts engine power with open center design. Durable phenolic material resists heat and corrosion. Easy installation with complete kit included. Fits Chevy and Ford 4-barrel carbs perfectly.	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)

Best Phenolic Carburetor Spacers

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

This 1.0-inch thick spacer boosts engine airflow. Its open center design works with many carburetors.
It fits Holley 4150 4160, Carter AFB, and Edelbrock 4BBL carbs. These have a square bore base for easy setup.
The package has a spacer, two gaskets, and four mounting studs with nuts. No extra parts needed—just bolt it on. This improves engine performance and fuel flow.

Pros	Cons
Adds 1.0-inch lift for better airflow and engine breathing Open center design boosts low-end torque and throttle response Universal fit for Holley, Carter AFB, and Edelbrock square-bore 4BBL carbs Includes gaskets, studs, and nuts for easy installation Durable construction ensures long-lasting performance under stress	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)

3. Edelbrock 8723 1/2″ Carburetor Spacer

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

This spacer fits easily into your setup. It improves airflow for better performance.

Made in the United States, it weighs just 0.75 pounds. The part number EDL-8723 ensures it’s the right fit for your needs.

Pros	Cons
Lightweight design for easy installation and handling. Durable wood fiber laminate material ensures long-lasting performance. Made in the USA, guaranteeing quality and reliability. Precise fit with part number EDL-8723 for your carburetor.	No performance gains promised, just a spacer. Wood fiber material may wear out faster. Basic design, lacks advanced features.

Perfect For:

This carburetor spacer is ideal for car enthusiasts or mechanics seeking to improve engine performance. Its 1/2″ design ensures a precise fit, while the wood fiber laminate offers strong, heat-resistant support. Easy to install, it’s built to last in United States-made quality.

Ready to Purchase?

View Price on Amazon (paid link)

4. 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.

It measures 0.5 inches thick with a natural finish. This spacer is easy to install and works well. It’s a great choice for enhancing engine efficiency.

Pros	Cons
Boosts low RPM torque for better performance. Improves throttle response instantly. Divided-wall design speeds up air and fuel mix. Heat-insulating material keeps engine cooler.	Limited Compatibility: Only works with dual-plane intake manifolds Fixed Thickness: 0.5-inch design may limit airflow adjustments

Perfect For:

The Edelbrock 8725 Carburetor Spacer is perfect for car enthusiasts who want to boost their engine’s performance. It’s great 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)

5. 1″ Aluminum Carb Carburetor Spacer W/ 3/8″ Vacuum Tube fits F-ord M-opar Holley

The 1″ Aluminum Carburetor Spacer boosts engine power by keeping heat in the carburetor. It’s a simple upgrade for better performance.

Fits Holley, Chevy, Ford, and Mopar with square hole carburetors. Does not fit spread bore or Quadra-jet models.

Comes with gaskets, studs, nuts, and washers. GSKMOTOR offers 30-day returns and fast support for any questions.

Pros	Cons
Boosts horsepower by retaining heat for better performance. Fits multiple brands like Ford, M-opar, and Holley. Complete kit includes spacer, gaskets, studs, nuts, and washers. Easy returns and exchanges within 30 days.	Not for spread bore or Quadra-jet carburetors. Limited to square hole carburetors only. No performance data provided for horsepower gains.

Perfect For:

This 1″ Aluminum Carburetor Spacer is perfect for car enthusiasts who want to boost their engine’s power. It’s great for H-OLLEY, CHEVY, Ford, and M-opar owners with square hole carburetors.

Ready to Purchase?

View Price on Amazon (paid link)

6. Spectre Performance 5776 1″ Open Carb Spacer with Tube

The Spectre Performance 5776 1” Open Carb Spacer fits Holley, Edelbrock, and Carter AFB carburetors. It’s designed to boost engine power and airflow.

This 1 Inch aluminum open spacer with tube is built from precision die cast aluminum for strength. It helps increase power by boosting air/fuel velocity in the engine. The kit also comes with gaskets and hardware for easy setup.

Installing this spacer is easy to install and fits right under your carburetor. Drivers notice stronger engine response and better throttle feel. The solid aluminum design stays durable and reliable over time.

Pros	Cons
Compatible with Holley, Edelbrock, Carter AFB carbs Durable aluminum construction for long-term reliability Boosts power by enhancing air/fuel velocity Includes gaskets and hardware for easy setup Precision die-cast for exact fit and efficiency	Not universal: Fits specific carburetors only, check compatibility first. Limited gain: Power boost may be small, not a major upgrade. Installation needed: Requires time and tools, not plug-and-play.

Perfect For:

This product is perfect for car enthusiasts with Holley, Edelbrock, or Carter AFB carburetors. It boosts power by raising air/fuel velocity and uses precision die-cast aluminum for strong, lightweight performance. Gaskets and hardware come included for easy setup.

Ready to Purchase?

View Price on Amazon (paid link)

7. 1″ Ported Phenolic Carburetor Spacer 4bbl SBC BBC BB Compatible for Holley SB Chevy Ford

This 1″ ported phenolic carburetor spacer boosts airflow and engine performance. It fits Holley, Edelbrock, Barry Grant (Demon), SB & BB Chevy, Ford, and Mopar models with square bore carburetors.

The package includes bolts, washers, nuts, and two gaskets for easy setup. It works with all square bore carburetors and ensures a secure, leak-free connection. Simple design makes installation quick and hassle-free.

Pros	Cons
Boosts engine power with 1″ ported design. Fits Holley, Edelbrock, Chevy, Ford, and more. Includes all bolts, washers, nuts, and gaskets. Easy install for square bore carburetors.	Phenolic material may not suit high-heat or high-stress environments. 1″ height might cause clearance issues in tight engine bays. Included hardware may lack durability or require upgrades.

Perfect For:

This 1″ Ported Phenolic Carburetor Spacer is perfect for car enthusiasts who want to boost engine performance. It’s ideal for those with Holley, Edelbrock, or Barry Grant carburetors on Chevy, Ford, or Mopar engines.

Ready to Purchase?

View Price on Amazon (paid link)

8. YUCHENSHLP Carb Spacer 2″ Aluminum 4 Br Open Carburetor Spacer Flange Carb Carburetor Spacer W/Gaskets Holley

The YUCHENSHLP Carb Spacer is a 2-inch aluminum part designed for Holley and Edelbrock carburetors. It adapts square flange carburetors to 4-barrel intake manifolds. The kit includes gaskets, studs, nuts, and washers for easy installation.

Made from high-quality aluminum, it resists corrosion, temperature changes, and aging. YUCHENSHLP offers 365-day returns and exchanges for customer satisfaction.

Pros	Cons
Fits most Holley & Edelbrock square bore carburetors Adapts square flange carbs to 4-barrel intakes Includes gaskets, studs, nuts, and washers for easy installation Durable diecast aluminum resists corrosion, heat, and aging 365-day returns & expert support ensure satisfaction	Not for Holley Spread Bore or Quadra-jet carburetors. Requires careful fitment check before buying. No installation tools included in the package.

Perfect For:

This carb spacer is perfect for car enthusiasts who want to upgrade their engine’s performance. It’s ideal for those with Holley or Edelbrock carburetors looking for a reliable, easy-to-install solution.

Ready to Purchase?

View Price on Amazon (paid link)

9. 1 SET Black Carb spacers 2″ Tall Ported Phenolic Carburetor Spacer Compatible with Holley 4150/4160 4bbl. SBC BBC Carb

This carburetor spacer is 2 inches tall and ported for better airflow. It’s made of phenolic material, which reduces heat and boosts performance. The set is compatible with Holley 4150/4160 and other 4-barrel carbs.

The phenolic material keeps the carburetor cooler, creating a denser air/fuel mix. This means more power and better efficiency for your engine.

The package includes all mounting hardware and gaskets you need. Its ported design ensures smooth airflow for top performance.

Pros	Cons
Boosts power and efficiency with phenolic material. Fits Holley 4150/4160 and other 4-barrel carbs. Reduces heat transfer for a denser fuel mix. Includes hardware and gaskets for easy install.	Not compatible with non-square bore carbs Fixed 2″ thickness limits tuning flexibility Phenolic material may crack under extreme stress

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, Barry Grant, Carter, or Edelbrock carbs on Chevy, Ford, or Chrysler engines.

Ready to Purchase?

View Price on Amazon (paid link)

10. 2″ Open Phenolic Carburetor Spacer for Holley 4150 4160 4 Barrel Carb – Compatible with SBC BBC Small Block Big Block Chevy Engine

This 2-inch carburetor spacer is a must-have for engine upgrades. It fits Holley 4150/4160 and other 4-barrel carbs easily.

It boosts high RPM power with an open design gasket. The 4-hole plate improves torque and response. Perfect for DIY or pro mechanics.

Made from phenolic material, it’s durable and precise. Optimizes airflow for better engine performance. A reliable upgrade for your car setup.

Pros	Cons
Boosts engine power with open design for high RPMs. Fits multiple carburetors and engines for versatile use. Improves torque with 4-hole design for better performance. Durable phenolic material ensures long-lasting reliability.	2-inch height may cause clearance issues in tight engine compartments. Phenolic material might lack durability compared to aluminum alternatives. Requires larger air cleaner to maintain proper airflow efficiency.

Perfect For:

This 2″ open phenolic carburetor spacer is perfect for car enthusiasts, mechanics, and DIYers upgrading Holley 4150/4160 carbs on SBC, BBC, Ford, or Mopar engines. It boosts high RPM power, torque, and airflow for better engine performance.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Carburetor spacers are a simple upgrade that can boost your engine’s power and torque. They improve airflow, making your ride perform better. Whether you’re a DIY enthusiast or a pro mechanic, the right spacer can transform your engine.

Buying the Best Carburetor Spacer: What to Consider

Material:
Choose between phenolic or aluminum. Phenolic resists heat, while aluminum is lightweight and durable.
Thickness:
Spacers range from 1/2 inch to 2 inches. Thicker spacers boost high RPM power, while thinner ones improve low RPM torque.
Compatibility:
Ensure the spacer fits your carburetor type (e.g., Holley, Edelbrock) and engine model (e.g., Chevy, Ford).
Design:
Open center spacers improve airflow, while ported designs enhance fuel/air mix for better performance.
Kit Inclusions:
Look for kits with gaskets, screws, and mounting hardware for easy installation.
Durability:
Check for heat resistance and corrosion protection to ensure long-lasting performance.
Brand Reputation:
Trusted brands like Edelbrock and Spectre offer reliable products with good customer support.
Price and Warranty:
Compare prices and look for warranties or return policies for peace of mind.