Best Performance Carburetor Spacers & Adapters of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 8, 2026

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Performance carburetor spacers and adapters are essential components for optimizing engine performance. These products are designed to increase the distance between the carburetor and intake manifold, which can result in improved airflow and increased power. Carburetor spacers are available in a range of thicknesses and materials, including aluminum and plastic. Adapters, on the other hand, are used to connect carburetors with different intake manifold types. Whether you're looking to improve your vehicle's acceleration or overall horsepower, performance carburetor spacers and adapters are a cost-effective and easy way to enhance your engine's performance.

At a Glance: Our Top Picks

Spectre Performance Carburetor Adapter Cover #TOP 1
Spectre Performance Carburetor Adapter
ftb score rating icon 9.8
Trans-Dapt 2041 2Bbl Holly Carb Adapter Cover #TOP 2
Trans-Dapt 2041 2Bbl Holly Carb Adapter
ftb score rating icon 9.7
Trans-Dapt 2202 Holley 4V To Sb Tbi Adapt Auto Part Cover #TOP 3
Trans-Dapt 2202 Holley 4V To Sb Tbi Adapt Auto Part
ftb score rating icon 9.5

Top 10 Performance Carburetor Spacers & Adapters

#TOP 1

Spectre Performance Carburetor Adapter

SPE-5772
Spectre Performance Carburetor Adapter Cover
Spectre Performance SPE-5772 5772 2V-4V Carburetor Adapter

The Spectre Performance Carburetor Adapter is a precision die-cast aluminum adapter that is 7/8 inches thick, made from high-quality material. The adapter comes with gaskets and hardware included. It is designed for use with carburetor spacers and adapters. This adapter can help improve the performance of your vehicle by allowing you to use a different type of carburetor without having to make any major modifications to your engine.

What We Like
Precision die-cast aluminum construction
Gaskets and hardware included
High-quality material
#TOP 2

Trans-Dapt 2041 2Bbl Holly Carb Adapter

Trans-Dapt
2041
Trans-Dapt 2041 2Bbl Holly Carb Adapter Cover
Trans-Dapt Performance 2041 2Bbl Holly To 6 Cyl.Gm

The Trans-Dapt Carb Adapter is designed to fit specific vehicles, making it a perfect match for your engine setup. This 2-barrel adapter allows you to connect a Holly carburetor to a 6-cylinder GM engine, offering a smooth and reliable fit. With a lightweight design, it adds minimal weight to your vehicle, enhancing performance without extra bulk. This product is highly regarded for its quality and ease of installation, letting you upgrade your carburetor setup with confidence and convenience.

What We Like
Vehicle-specific fit
2-barrel carburetor adapter
Lightweight design
Easy installation
#TOP 3

Trans-Dapt 2202 Holley 4V To Sb Tbi Adapt Auto Part

Trans-Dapt
2202
Trans-Dapt 2202 Holley 4V To Sb Tbi Adapt Auto Part Cover
Trans-Dapt Performance Trans-Dapt 2202 Holley 4V To Sb Tbi Adapt

This Trans-Dapt 2202 Holley 4V To Sb Tbi Adapt is an auto part that falls under the category of carburetor spacers and adapters. The item package dimension is 22.098 cm L X 21.082 cm W X 6.35 cm H, and it weighs 2.1 lbs. It is made in the United States.

What We Like
High-quality carburetor spacer and adapter
Convenient item package dimension and weight
Made in the United States
#TOP 4

Trans-Dapt 2046 Carb Stud Kit

Trans-Dapt
2046
Trans-Dapt 2046 Carb Stud Kit Cover
Trans-Dapt Performance Trans-Dapt 2046 1 3/8""Carb Stud Kit-4"

The Trans-Dapt Carb Stud Kit is designed to help you securely install carburetor components with ease. It includes four studs, nuts, and washers, giving you everything needed for a complete setup. Each stud measures 1 3/8 inches, making it suitable for various carburetor applications. The kit features 5/16 inch coarse and fine threads, offering versatility and a tight fit to prevent loosening during use. With its lightweight design and compact packaging, this kit is convenient to store and carry. Whether you're upgrading or repairing, the Trans-Dapt Carb Stud Kit provides reliable parts to get the job done efficiently.

What We Like
Complete hardware set
1 3/8 inch stud length
Coarse and fine threads
Lightweight and compact
#TOP 5

BBK Performance 1504 Throttle Body EGR Spacer

1504
Cast Aluminum
No Size
BBK Performance 1504 Throttle Body EGR Spacer Cover
BBK Performance 1504 75mm Throttle Body EGR Spacer Plate - High Flow Power Plus Series for Ford Mustang 5.0L, Cast Aluminum

The BBK Throttle Body Spacer is a high-performance upgrade designed specifically for the Ford Mustang 5.0L. As a leading aftermarket brand, BBK offers a 75mm EGR spacer that matches perfectly with the corresponding throttle body. This spacer is made from CNC machined aluminum, ensuring it exceeds OEM standards and provides reliable performance for years. Installation is straightforward, allowing you to replace your factory unit with simple hand tools in under 30 minutes, offering you a hassle-free enhancement to your vehicle's airflow and power.

What We Like
High-quality cast aluminum
Easy installation
Compatible with BBK throttle body
Improves airflow
#TOP 6

Fragola 491975 Carburetor Adapter

491975
Blue
Fragola 491975 Carburetor Adapter Cover
Fragola 491975 Carburetor Adapter Fitting

The Fragola Carburetor Adapter is designed with convenience and durability in mind. Its compact size, measuring just 0.7 by 4.3 by 1.7 inches, makes it easy to fit into tight engine spaces without hassle. Weighing only 0.062 kilograms, it adds minimal weight to your setup, helping maintain overall efficiency. The adapter features a straight inlet fitting that connects a 6 AN male end to a 7/8-20 male thread, providing a secure and reliable connection for your carburetor. Made from blue anodized aluminum, this adapter not only looks great but also resists corrosion, ensuring long-lasting performance.

What We Like
Compact dimensions
Lightweight design
Straight inlet fitting
Durable anodized aluminum
#TOP 7

ARP 300-2403 Carburetor Stud Set

ARP
300-2403
Black
ARP 300-2403 Carburetor Stud Set Cover
ARP 300-2403 Pro Series Black Oxide 5/16" Thread 2.700" OAL Drilled Carburetor Stud with 2" Spacer f

The ARP Carburetor Studs are designed for performance enthusiasts looking for reliability and precision. Made in the USA, these studs ensure a high-quality build that you can trust. With a length of 2.700 inches and a 5/16" thread, they provide a secure fit for your carburetor, enhancing its performance. The compact package size makes it easy to store and transport, while the lightweight design of just 0.3 pounds allows for easy handling. This set of four studs is perfect for NASCAR wire seal applications, giving you the confidence needed for your automotive projects.

What We Like
High-quality American manufacturing
Secure fit for carburetors
Lightweight and easy to handle
Compact packaging for convenience
#TOP 8

BBK 70mm Throttle Body EGR Spacer Plate

1502
Factory
No Size
BBK 70mm Throttle Body EGR Spacer Plate Cover
BBK Performance 1502 70mm Throttle Body EGR Spacer Plate - High Flow Power Plus Series for Ford Mustang 5.0L, Cast Aluminum

Introducing the BBK Throttle Body Spacer, the perfect upgrade for your Ford Mustang 5.0L. Designed and built by the renowned aftermarket performance brand BBK, this high-flow power plus series spacer offers exceptional performance gains. The 70mm EGR spacer is specifically designed to be used with the corresponding size throttle body, such as the BBK 70mm Throttle Body Part 1501. With its all-new CNC machined casting and components that exceed OEM standards, this spacer guarantees years of trouble-free performance. Installation is a breeze, as it can be easily bolted on to replace the factory unit using simple hand tools in less than half an hour. Experience increased power and efficiency with the BBK Throttle Body Spacer.

What We Like
High-flow design
Easy installation
Exceptional performance gains
#TOP 9

Trans-Dapt 2106 Carburetor Stud Kit - Set of 4

Trans-Dapt
2106
No Color
No Size
Trans-Dapt 2106 Carburetor Stud Kit - Set of 4 Cover
Trans-Dapt Performance Trans-Dapt 2106 Carburetor Stud Kit - Set of 4

This carburetor stud kit includes four studs that are designed to fit specific vehicles. The package dimensions are 3.555 H x 8.128 L x 5.842 W (centimeters), and the kit weighs 0.200 pounds. The kit is made in Taiwan and falls under the category of carburetor spacers and adapters.

What We Like
Includes four studs designed to fit specific vehicles
Lightweight at only 0.200 pounds
Compact package dimensions for easy storage
#TOP 10

XRP 700192-6 Fuel Pressure Adapter

XRP
700192
XRP 700192-6 Fuel Pressure Adapter Cover
XRP 700192-6 to -6 Fuel Pressure Adapter with 1/8 NPT Port

The XRP Fuel Pressure Adapter is designed to help you connect your fuel system with ease. Featuring a 6 AN gauge adapter fitting, it allows for accurate fuel pressure readings, which can be crucial for maintaining your engine's performance. The adapter also includes a 1/8 NPT port, giving you additional options for attaching sensors or gauges. With compact dimensions of just 1.78 by 6.05 by 3.67 inches, it fits neatly into your setup without taking up much space. Weighing only 1.37 pounds, it’s lightweight yet durable, making it a convenient and reliable choice for your fuel system needs.

What We Like
6 AN gauge adapter fitting
1/8 NPT port for sensors
Compact size
Lightweight design
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How much difference does a carb spacer make?

A carburetor spacer increases the intake plenum volume by creating a taller neck on the manifold. This extra volume increases the distance between the bottom of the intake manifold and the bottom of the carburetor, leading to improved performance.

2. Are 2 inch carb spacers better than 1 inch?

In terms of performance, 2-inch carb spacers generally provide better results compared to 1-inch spacers, regardless of intake design.

3. Is a 4-hole or open carb spacer better?

4-hole tapered spacers are typically recommended, as they improve both plenum volume and the CFM of the carburetor or throttle body. Open spacers only increase plenum volume and do not offer the same benefits as 4-hole spacers.

4. What is the best carb spacer material?

The choice of carb spacer material depends on various factors. Wood fiber laminate is best for blocking heat, followed by plastic. Aluminum is durable but not a good heat blocker. The choice of material may also be influenced by race/competition regulations, where aluminum is often the preferred option.

5. How much HP does a spacer add?

Throttle body spacers can potentially increase torque by 25 ft lbs and add up to 18 more horsepower. However, it's important to note that not all throttle body kits are suitable for all engines.

6. Do carb spacers add horsepower?

Open plenum carb spacers are designed to maximize horsepower. They increase the total area of the intake manifold, resulting in more power in the mid-range and at high RPMs.

Editor's Notes

During our performance carburetor spacers & adapter research, we found 24 performance carburetor spacers & adapter products and shortlisted 10 quality products. We collected and analyzed 3,694 customer reviews through our big data system to write the performance carburetor spacers & adapters list. We found that most customers choose performance carburetor spacers & adapters with an average price of $64.93.

The performance carburetor spacers & adapters are available for purchase. We have researched hundreds of brands and picked the top brands of performance carburetor spacers & adapters, including Spectre, Trans-Dapt, BBK Performance, Fragola, ARP. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.