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Updated: 06 Apr 2026

10 Best Carburetor Spacers Adapters

#1 Best Pick
Edelbrock Carburetor Adapter 2696, Aluminum Carburetor Carb Spacer Plate 0.85 inch, Square Bore to Spread Bore Carburetor Adapters Kits for Stock Quadrajet & Thermo-Quad Manifold with Flange Gaskets

Edelbrock Carburetor Adapter 2696, Aluminum Carburetor Carb Spacer Plate 0.85 inch, Square Bore to Spread Bore Carburetor Adapters Kits for Stock Quadrajet & Thermo-Quad Manifold with Flange Gaskets

Brand: liriuda
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  • 【Carb Spacer Specification】 Edelbrock 2696 adapter ; Square Bore Carburetor to Quadrajet and Thermo-Quad manifolds Adapter ; Mount Edelbrock Square-Bore Carbs to Stock Q-Jet & Thermo-Quad ; Size:0.850 inches Thick
  • 【Fitment】The Edelbrock Square-bore Carb to Spread-bore Manifold Adapter 2696 is designed to allow installation of the Edelbrock Performer Series carburetor on vehicles with the OEM spread-bore intake manifold .It could also be used to replace for stock Q-Jets and T-Q Intakes
  • 【Fitment】 This Adapter was designed to make a square bore carburetor fit a factory spread bore manifold. I'm assuming your intake manifold is a spread bore type. Edelbrock carbs are square bore in design
  • 【Advantage 】This carburetor adapter plate helpes with increased intake manifold pressure at idle and also improves horsepower and torque through the entire rpm range and responds much better than 750 Ed did It could be used for many vehicles update such as Dodge, Chevy, GM, GMC, Ford Ect
  • 【Packge Include】1x Aluminum Adapter; 1x lower gasket (intake to adapter), 1x upper gasket (adapter to squarebore carb), 4x screws to bolt adapter to intake , 4x studs and nuts to bolt carb to adapter ;Please probably use the studs, Dont over tighten, Proper design works for its intended application without vacuum leaks
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#2 Best Value
1inch Aluminum Carb Carburetor Spacer W/ 3/8inch Vacuum Tube Replacement for Chevy Holley

1inch Aluminum Carb Carburetor Spacer W/ 3/8inch Vacuum Tube Replacement for Chevy Holley

Brand: CHUSHEN
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  • 1inch Aluminum Carb Carburetor Spacer W/ 3/8inch Vacuum Tube Replacement for Chevy Holley.
  • Made of premium quality aluminum material, high temperature and corrosion resistance.
  • Not Fit Holley Spread Bore Carburetors or Quadra-jet Carburetors.
  • Exquisite workmanship, manufactured and tested to highest standards.
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#3 Budget Pick
Zerodis Steel Carburetor Stud Set with Spacers, 3.5in 5/16in Threads, for HolleyCarterRochester

Zerodis Steel Carburetor Stud Set with Spacers, 3.5in 5/16in Threads, for HolleyCarterRochester

Brand: Zerodis
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  • DIMENSIONS: 8.9 cm length with precision-cut 5/16 inch threads for secure mounting
  • COMPATIBILITY: Universal fit carburetor stud set designed for Holley, Carter and Rochester carburetors
  • CONSTRUCTION: Manufactured from durable steel for reliable performance and longevity
  • MOUNTING HARDWARE: Stud set provides stable mounting solution for secure carburetor attachment
  • COMPLETE KIT: Includes both studs and spacers for proper carburetor installation and alignment
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#4 Top Choice
Carburetor Studs Set 3.5in with Spacers Steel Rustproof for Wide Application Carburetor Replacement

Carburetor Studs Set 3.5in with Spacers Steel Rustproof for Wide Application Carburetor Replacement

Brand: Phefop
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  • Complete 4-Stud Kit: Includes everything needed for a secure installation: 4x high-strength steel studs, 4x spacers, and 4x zinc-plated hex nuts, providing a complete replacement or upgrade for your carburetor mounting system.
  • Premium Zinc-Plated Steel: Made from durable steel with a bright zinc plating for excellent corrosion resistance and long-lasting performance, even in harsh under-hood environments.
  • Universal 5/16" Thread Fit: Designed with 3.5-inch (8.89cm) studs featuring 5/16-inch threads to fit any standard intake manifold with matching 5/16" threads, ensuring a precise and secure connection.
  • Ensures Optimal Seal & Performance: Properly mounts your carburetor to the intake manifold to maintain a critical air-tight seal, improving fuel efficiency and overall engine performance for a better driving experience.
  • Wide Brand Compatibility: A direct replacement and upgrade part for popular carburetor brands including Holley, , Carter, and Rochester, making it an essential repair or performance accessory for classic cars, hot rods, and modified vehicles.
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#5 Popular Choice
Domary 1in Carburetor Spacer, Open Center Style, Phenolic Plastic, Fits for Holley 4150/4160, Small/Big Block, Engine, for Applicable Scope

Domary 1in Carburetor Spacer, Open Center Style, Phenolic Plastic, Fits for Holley 4150/4160, Small/Big Block, Engine, for Applicable Scope

Brand: Domary
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  • [Temperature Control] : Insulates carburetor from excessive engine heat, resulting in a denser and more powerful fuel charge to the manifold.
  • [Enhanced Performance] : Increases mixture velocity, improves fuel temperature inside the carburetor, and provides a more efficient fuel charge for better engine performance.
  • [Compatibility] : Fits for 4 carbs with a square bore base like holley 4150/4160, barry grant, carter, and , suitable for various engine types.
  • [Increased Air/fuel Distribution] : Enhances the length of the intake mixture column and boosts air/fuel distribution, optimizing engine performance.
  • [Improved Power and Torque] : Open design increases plenum volume for enhanced high rpm power, while the 4-hole design enhances low-speed and mid-range torque.
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#6 Top Pick
1" Ported Phenolic Carburetor Spacer, Automotive Carburetor spacer Base Screws Set 4bbl SBC BBC BB Replacement Accessories Fits for SB

1" Ported Phenolic Carburetor Spacer, Automotive Carburetor spacer Base Screws Set 4bbl SBC BBC BB Replacement Accessories Fits for SB

Brand: JOROBURO
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  • Phenolic Plastic Material: Our Carburetor Gasket is made from high-quality phenolic plastic which helps keep heat out of the carburetor. This feature contributes to enhanced performance and more horsepower.
  • Complete Set: This Carburetor Adapter kit comes with a gasket base, 2 gaskets, and all necessary mounting hardware. Everything needed for installation is included to ensure an easy and hassle-free setup.
  • Compatible Design: The Carburetor Adapter 9134 is designed to fit all square bore carburetors, making it a versatile addition to your engine.
  • Durability: Manufactured from bakelite material, this Carburetor Gasket is durable and designed for long-term use, thus providing excellent value for your investment.
  • 1" Total Height: With a total height of 1", our Carburetor Adapter Bakelite fits perfectly into your engine setup, providing optimal performance without altering the original design.
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#7 Top Pick
Carburetor Gasket, Gasket Base, 1inch Ported Phenolic Carburetor Spacer, Automotive Replacement Carburetor Spacers & Adapters 4bbl SBC BBC BB Fits for Holley SB

Carburetor Gasket, Gasket Base, 1inch Ported Phenolic Carburetor Spacer, Automotive Replacement Carburetor Spacers & Adapters 4bbl SBC BBC BB Fits for Holley SB

Brand: PerGar
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  • Superior Fitment: Our Carburetor Gasket Base Kit is specifically designed for Holley, Barry Grant, SB & BB carburetors. Before purchasing, please ensure compatibility with your vehicle.
  • Premium Quality Material: Crafted from high-quality bakelite, our Carburetor Spacer ensures durability and reliability for enhanced performance, even under long-term use.
  • Heat Management: The Phenolic Plastic construction effectively dissipates heat, keeping it out of the carburetor. Experience increased horsepower for your vehicle.
  • Direct Replacement: With a 1" total height, our Carburetor Spacer easily fits most square bore carburetors. It serves as an original standard and a seamless replacement for your old or broken spacer.
  • Easy Installation: Our Carburetor Spacer Set includes a gasket base, 2 gaskets, and all necessary mounting hardware. Enjoy a convenient and straightforward installation process.
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#8 Top Pick
MUNEFE Carburetor Spacer, Port Phenolic Carburetor Gaskets, Carburetor Gaskets, Tall Ported Phenolic Carburetor Spacer for Small and Large Displacement Engines

MUNEFE Carburetor Spacer, Port Phenolic Carburetor Gaskets, Carburetor Gaskets, Tall Ported Phenolic Carburetor Spacer for Small and Large Displacement Engines

Brand: MUNEFE
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  • DURABLE BAKELITE CONSTRUCTION: The carburetor gaskets are made of bakelite material for durability, which ensures a reliable seal and extends the life of your carburetor system.
  • COMPATIBLE WITH COMMON CARBURETORS: This product is suitable for specific carburetors, reference model SPC 9134 SI-AT58024, and is compatible with all square hole carburetors, which is widely applicable.
  • INSULATION FOR HORSE POWER: The carburetor gaskets are made of phenolic plastic, which effectively insulates the heat inside the carburetor, helping to increase horsepower and improve engine performance.
  • OPTIMAL SIZE: With an overall height of 1 inch, carburetor gaskets fit a variety of carburetor setups to ensure optimal sealing and reliable performance.
  • All In One Installation Kit: Each set of carburetor gaskets comes with a gasket base, two gaskets and all necessary mounting hardware to provide everything needed for a hassle-free installation.
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#9 Top Pick
uxcell Carb Spacers 1/2" Tall Ported Phenolic Carburetor Spacer 4BBL for Chevy for Ford SBC BBC BB with Gasket Screws Kit

uxcell Carb Spacers 1/2" Tall Ported Phenolic Carburetor Spacer 4BBL for Chevy for Ford SBC BBC BB with Gasket Screws Kit

Brand: uxcell
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  • Applicable Model: Universal used in carburetors with 4 barrel carbs and square bore: for Chevy for Ford SBC BBC BB engines etc.
  • Function: The carburetor will generate heat during use, so it is necessary to use carburetor gaskets to insulate the heat and protect the carburetor. With 4 hole open center design, our carburetor spacer improves the volume of the plenum chamber which increasing RPM and torque power.
  • Made from durable Phenolic, corrosion resistance, high and low temperature resistance, provide long service life.
  • Size: 1/2" Thickness, Carburetor Base Flange: Square Bore.
  • Complete Package List for Convenient Installation: 1pc Carburetor Spacer; 2pcs gasket; 4pcs screws to bolt adapter to intake; 4pcs studs and nuts to bolt carb to adapter.
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#10 Top Pick
Carburetor Brass Spacer Replaces Victa CR03619A for Victa G4 Series Lawnmower carburetors (Pack of 9)

Carburetor Brass Spacer Replaces Victa CR03619A for Victa G4 Series Lawnmower carburetors (Pack of 9)

Brand: C·T·S
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  • Replaces Victa CR03619A;
  • Fits: Victa G4 series lawnmower carburetors;
  • It is not used on all models;
  • New high quality replacement brass spacer;
  • Package include: 9x brass spacer;
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