Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Holley EFI LS Hi-Ram Intake Manifolds 300-123 Manifolds, EFI, Hi-Ram, Cathedral Port Head, Multi-port, 105mm Bore, Standard Deck, Aluminum, Satin Finish, Chevy, 4.8-6.0L, Each

Holley EFI LS Hi-Ram Intake Manifolds 300-123 Manifolds, EFI, Hi-Ram, Cathedral Port Head, Multi-port, 105mm Bore, Standard Deck, Aluminum, Satin Finish, Chevy, 4.8-6.0L, Each

Sale ends in Calculating...

A$2,666.73 A$3,034.23
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.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Holley EFI LS Hi-Ram intake manifolds are designed for your high performance race engine. Big cube and high-rev applications without height limitations are the intent for these manifolds. The modular design of these Holley Hi-Ram intake manifolds offers a runner length and as-cast tapered cross-section design that works for a wide range of engine configurations. The included fuel rails are machined for -8 AN O-ring fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system. Build maximum performance with EFI LS Hi-Ram intake manifolds from Holley.

Part Type

GM LS Hi-Ram Intake System EFI 105mm LS1/2/6

Data: v4.2 - Upd: 2026-10-17 03:08:08

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
300-123
Product Attributes - Part Type
Intake Manifolds, Fuel Injected
Product Attributes - Product Line
Holley EFI LS Hi-Ram Intake Manifolds
Product Attributes - UPC
090127681688
Product Attributes - Cylinder Head Configuration
Cathedral Port LS1/LS2/LS6
Product Attributes - Fuel Injection Style
Multi-port
Product Attributes - Basic Operating RPM Range
Idle-8,000
Product Attributes - Intake Section Included
Complete
Product Attributes - Throttle Body Bore Size
105mm
Product Attributes - Engine Block Deck Height
Standard deck
Product Attributes - Injectors Included
No
Product Attributes - Multi-Port Fuel Rails Included
Yes
Product Attributes - EGR
No
Product Attributes - Aftermarket Fuel Rail Required
Yes
Product Attributes - Throttle Body Included
No
Product Attributes - Supplemental Bosses Cast-In
No
Product Attributes - Supplemental Bosses Machined
No
Product Attributes - Runners Included
Yes
Product Attributes - Runners Removable
No
Product Attributes - Plenum Material
Aluminum
Product Attributes - Plenum Finish
Natural
Product Attributes - Base Material
Aluminum
Product Attributes - Base Color
Natural
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
With cathedral port heads only. Fuel rails are machined for -8 AN O-ring female fittings.

Reference Information

Brand Name/s Holley
StreetFX SKU hly300-123
SFX Item ID 4782190
Supplier Item Code 4782190
Manufacturer SKU 300-123
Manufacturer UPC 90127681688
Alternative References HOL300-123, 105mm, 4.8-6.0L

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1997
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.7L/350
    Application NotesWith cathedral port heads only. Fuel rails are machined for -8 AN O-ring female fittings.
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2007
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Application NotesWith cathedral port heads only. Fuel rails are machined for -8 AN O-ring female fittings.
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2014
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.3L/325
    Application NotesWith cathedral port heads only. Fuel rails are machined for -8 AN O-ring female fittings.
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size4.8L/294
    Application NotesWith cathedral port heads only. Fuel rails are machined for -8 AN O-ring female fittings.

Loading compatibility information...