Best Dual Cold Air Intake For Carburetor: Compare Seven Options

#1 · Best Overall

1. Assault Racing A5234B Scoop

Best for: Dual-carb scoop with filters.

Why it ranks #1: The complete scoop kit supports single or dual carburetors and includes two paper filters, mounting hardware, and a plate for 5-1/8-inch necks.

A polished, finned aluminum scoop can mount to either single or dual four-barrel carburetors, enabling one kit to serve different carburetor layouts. It comes with two paper-element air filters and mounting hardware, making it a more complete scoop package than a bare plenum.

The included mounting plate supports single or dual 4-barrel carburetors in sideways or in-line arrangements, giving buyers flexibility in how the scoop sits over the carburetors. Its 5-1/8-inch neck fit covers most listed Holley, Edelbrock, Rochester, and Carter carburetors. Two paper-element filters and mounting hardware are included, so the kit provides key installation pieces together; the listed dimensions of 19.75 by 10.25 by 5.25 inches also help with space planning.

Skip it if you need a compact bare plenum rather than a complete scoop kit; Spectre Performance SPE-9859 is a cast-aluminum plenum with dual 4-inch inlets.

This fits buyers wanting a polished finned scoop, filters, and mounting hardware for a single- or dual-carburetor arrangement. Check the listed overall dimensions and 5-1/8-inch neck fit against the intended engine layout.

Listed on Amazon as: Assault Racing Products A5234B Polished Aluminum Finned Top Shotgun Intake Air Scoop Single & Dual Carb Setup

#2 · Angled Tube Routing

2. Spectre 771 Plenum Kit

• Weight: 4.85 kg

Best for: Low-profile routed intake kit.

Why it ranks #2: This bolt-on kit fits 5-1/8-inch carburetor and TBI inlets, and its included 45- and 90-degree tube supports flexible routing; filters are not included.

A low-profile dual plenum kit supplies both 45° and 90° tube options, enabling a carburetor or TBI intake route to be shaped around available space. Its polished aluminum finish also fits a show-car presentation, while the 5-1/8-inch inlet sets a clear compatibility target.

The bolt-on kit is listed for carburetors and TBI throttle bodies with a 5-1/8-inch inlet, helping buyers match the plenum to the intake opening before installation. Its supplied 45°/90° tube gives routing choices, and the 24.3-inch listed length helps with planning the available space. Spectre says installation requires no special skills or tools; however, air filters are not included, so they remain a separate part of the setup.

Skip it if you want filters included with the scoop; Assault Racing Products A5234B supplies two paper-element filters and mounting hardware.

Choose this for a 5-1/8-inch carburetor or TBI setup that benefits from two tube-angle options and a low-profile kit. Account for the 24.3-inch listed length and source air filters separately.

Listed on Amazon as: Spectre Performance 771 Low Profile Dual Plenum Kit with 45°/90° Tube, Silver,24.3 Inch

#3 · Dual 4-Inch Inlets

3. Spectre 9859 Plenum

• Weight: 1.74 kg

Best for: Cast-aluminum dual-plenum upgrade.

Why it ranks #3: Its cast-aluminum dual plenum has two 4-inch inlets and a 5-1/8-inch connection, making it a direct-spec match for compatible carburetors or TBI.

A cast-aluminum body pairs a 5-1/8-inch carburetor opening with two 4-inch inlets, giving a compatible intake setup a dual-inlet plenum. Its straightforward, plenum-only format suits buyers assembling a system around their own filters and tubing rather than shopping for a complete intake kit.

The 5-1/8-inch opening identifies the carburetor-side connection, while the two 4-inch inlets provide the stated dual-inlet arrangement for the rest of the intake system. Cast aluminum supplies the body material, and the included component is a dual plenum, so buyers can plan around a single central part without expecting filters or tubes in the package. The listing does not provide inlet angles or overall dimensions, which leaves routing details to check against the intended installation.

Skip it if you need a ready-to-install intake kit with filters and a 45°/90° tube; Spectre Performance 771 includes a tube, though not filters.

This suits a carburetor or TBI builder seeking a cast-aluminum dual plenum with a 5-1/8-inch opening and 4-inch inlets. It is a component, not a complete filter-and-tube assembly, so plan the remaining connections separately.

Listed on Amazon as: Spectre Performance SPE-9859 9859 5-1/8" Polished Plenum with 4" Dual Inlet

#4

4. Vroelos 9859 Plenum

• Weight: 0.27 g

Best for: Broad carburetor-fit plenum.

Why it ranks #4: The listing specifies a 5-1/8-inch carburetor or TBI flange and dual 4-inch, 90-degree inlets, though it describes a plenum rather than a complete filter kit.

Compatibility spanning 5-1/8-inch carburetor and TBI necks—including Holley, Edelbrock, Rochester, Carter, and GM TBI setups—makes this dual plenum useful for a broad range of listed connections. Its two low-profile 4-inch inlets provide a defined interface for a matching intake arrangement.

The 5-1/8-inch neck specification gives buyers a concrete fit criterion across the listed carburetor and TBI types, while the 90-degree dual 4-inch inlets clarify how intake connections meet the plenum. The stated 3.5-inch height and 8-inch distance from the center stud to each inlet help with clearance and tube-routing plans. It is described as polished cast aluminum and supplied as a plenum, so filters and other intake components are not part of the listed package.

Skip it if you want filters and mounting hardware bundled with the scoop; Assault Racing Products A5234B includes two paper-element filters and mounting hardware.

This suits builders matching a 5-1/8-inch carburetor or TBI neck who need two 4-inch, 90-degree connections. Use its height and inlet-spacing figures to assess clearance, and plan filters and tubing as separate components.

Listed on Amazon as: 9859 Dual Air Intake Bonnet Plenum Fit for 5-1/8 In Carb TBI

#5

5. GUYAOYI 9859 Plenum

Best for: Direct-replacement dual-plenum buyer.

Why it ranks #5: This polished cast-aluminum dual plenum is listed for 5-1/8-inch carburetor or TBI inlets, with two 4-inch inlets 90 degrees apart.

Two 4-inch inlets sit 90 degrees apart on this polished cast-aluminum bonnet, enabling a dual-inlet connection where that angle suits the intake layout. The 5-1/8-inch opening targets carburetors and TBI throttle bodies, and the listing describes installation as a direct replacement without modifications.

The 5-1/8-inch carburetor/TBI opening gives buyers a specific connection size to match, while the dual-plenum design is described as promoting smooth, even air distribution. Its 4-inch inlets are 90 degrees apart, a practical routing detail for planning attached tubing or accessories. The bonnet measures 3.5 inches tall, with 8 inches from the air-cleaner stud to each inlet, helping assess clearance and positioning before installation.

Skip it if you need a kit that supplies a tube; Spectre Performance 771 includes a 45°/90° tube, though its filters are separate.

This is for a 5-1/8-inch carburetor or TBI owner replacing a dual-plenum bonnet and routing two 4-inch connections at 90 degrees. Consider its 3.5-inch height and 8-inch inlet spacing when checking clearance.

Listed on Amazon as: 9859 4" Dual Plenum Air Intake Bonnet Carb Hat,

#6

6. BuliBoao 9859 Plenum

Best for: 90-degree replacement bonnet.

Why it ranks #6: It specifies a 5-1/8-inch carburetor or TBI fit and dual 4-inch inlets set 90 degrees apart, but the listing gives fewer component details.

Two 4-inch inlets positioned 90 degrees apart give this bonnet a clear connection layout for matching tubing, filters, and accessories. Its 5-1/8-inch opening is specified for carburetors and TBI throttle bodies, while the listing presents it as a direct replacement requiring no modification.

The 5-1/8-inch opening defines the carburetor or TBI connection, and the two 4-inch inlets are described as matching 4-inch tubing, filters, and accessories. Their 90-degree separation helps buyers plan routing around the engine bay. The listed dimensions add practical clearance information: the bonnet is 3.5 inches tall, with 8 inches from the air-cleaner stud to each inlet. Installation is described as a direct replacement for old or damaged parts without modification.

Skip it if you want a kit with a tube supplied; Spectre Performance 771 includes 45°/90° tube options, but excludes air filters.

This fits buyers replacing a bonnet on a 5-1/8-inch carburetor or TBI setup with two 4-inch connections. Its stated dimensions and 90-degree layout help with routing, but filters and tubing need separate sourcing.

Listed on Amazon as: 9859 4" Dual Carb Hat Air Bonnet Plenum, 90° Angle

#7 · Low-Profile Layout

7. Spectre 9824 Plenum

• Weight: 0.27 g

Best for: Ultra-low-profile angled plenum.

Why it ranks #7: The dual-plenum design has a 120-degree layout and is described as adapting an intake to a carb or throttle body, but no neck size is stated.

A dual, ultra-low-profile sheet-metal plenum with a 120-degree angle adapts an intake system to a carburetor or throttle body, enabling a compact angled connection. Spectre also describes the lightweight body as not retaining heat, with cool air flowing to the engine.

The 120-degree configuration gives this plenum a defined angle for adapting the intake system, which can matter when planning the connection path to a carburetor or throttle body. Its ultra-low-profile sheet-metal construction is described as lightweight and non-heat-retaining, supporting a compact setup intended to pass cool air to the engine. The supplied information does not specify the carburetor neck size or inlet diameter, so buyers should establish those connection details for their installation before choosing it.

Skip it if you need a specified 5-1/8-inch opening and dual 4-inch inlets; Spectre Performance SPE-9859 lists both dimensions.

This suits a buyer prioritizing a compact, angled dual plenum for a carburetor or throttle-body intake. The supplied facts identify its 120-degree angle but not connection diameters, so that fit detail is a key boundary.

Listed on Amazon as: Spectre Performance 9824 120° Ultra Low Profile Sheet Metal Dual Plenum