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Holley

Holley EFI Carburetor Hats 120-230 Supercharger Enclosures, Hat, Aluminum, Natural, 5.125 in. Diameter, 3.97 in. Tall, Each

SKU: HLY120-230

Supercharger Carburetor Enclosures
Holley EFI Carburetor Hats 120-230 Supercharger Enclosures, Hat, Aluminum, Natural, 5.125 in. Diameter, 3.97 in. Tall, Each

Holley

Holley EFI Carburetor Hats 120-230 Supercharger Enclosures, Hat, Aluminum, Natural, 5.125 in. Diameter, 3.97 in. Tall, Each

SKU: HLY120-230

Supercharger Carburetor Enclosures
A$600.33
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Holley EFI carburetor hats are the perfect complement to any blow-through installation. They feature a contoured design that promotes optimal airflow, while providing excellent hood clearance for most applications. Each hat has a 1/8 in. NPT reference port that can be used as a suitable hookup for boost gauges or carbureted fuel pressure regulators. The inlet is designed for a 3.50 in. silicone coupler (unless otherwise noted), with a sealing lip to ensure a leak-free installation. EFI aluminum carb hats are available in a natural or black powdercoat finish.

Part Type

EFI 4150 Carb Hat Natural Finish

Data: v4.2 - Upd: 2026-10-13 18:47:40

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
120-230
Product Attributes - Part Type
Supercharger Carburetor Enclosures
Product Attributes - Product Line
Holley EFI Carburetor Hats
Product Attributes - UPC
090127059609
Product Attributes - Linkage Included
No
Product Attributes - Carburetor Included
No
Product Attributes - Carburetor Enclosure Material
Aluminum
Product Attributes - Carburetor Enclosure Color
Natural
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Fits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.

Reference Information

Brand Name/s Holley
StreetFX SKU hly120-230
SFX Item ID 4783107
Supplier Item Code 4783107
Manufacturer SKU 120-230
Manufacturer UPC 90127059609
Alternative References HOL120-230

Compatibility

Application Data
  • Carburetor Manufacturer (application)AED Performance
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.
  • Carburetor Manufacturer (application)Barry Grant
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.
  • Carburetor Manufacturer (application)Carter
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.
  • Carburetor Manufacturer (application)Demon
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.
  • Carburetor Manufacturer (application)Edelbrock
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.
  • Carburetor Manufacturer (application)Ford
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.
  • Carburetor Manufacturer (application)Holley
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.
  • Carburetor Manufacturer (application)Proform
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.
  • Carburetor Manufacturer (application)Quick Fuel
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.
  • Carburetor Manufacturer (application)Rochester
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.
  • Carburetor Manufacturer (application)Summit
    Application NotesFits carburetors and throttle bodies with a 5.125 in. air cleaner opening. Carburetor hat measures 3.97 in. tall. Hat comes with a hole for a 1/4 in diameter stud but can be drilled for use with a 5/16 in. stud. Hat features a 3.5 in. inlet diameter and a 1/8 in. NPT port.

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