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

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

Sale ends in Calculating...

A$2,878.54 A$3,059.83
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.
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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: 2026-10-18 00:32:03

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
300-123BK
Product Attributes - Part Type
Intake Manifolds, Fuel Injected
Product Attributes - Product Line
Holley EFI LS Hi-Ram Intake Manifolds
Product Attributes - UPC
090127688915
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
Black ceramic
Product Attributes - Base Material
Aluminum
Product Attributes - Base Color
Black ceramic
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 hly300-123BK
SFX Item ID 4784628
Supplier Item Code 4784628
Manufacturer SKU 300-123BK
Manufacturer UPC 90127688915
Alternative References HOL300-123BK, 105mm, 4.8-6.0L

Compatibility

Application Data
  • Beginning Year1997
    Ending Year2004
    Engine FamilyCHEVY SMALL BLOCK GEN III/IV LS V8 GAS
    Engine Size5.7L/350
    Engine TypeV8
    MakeCHEVROLET
  • Beginning Year1999
    Ending Year2007
    Engine FamilyCHEVY SMALL BLOCK GEN III/IV LS V8 GAS
    Engine Size6.0L/364
    Engine TypeV8
    MakeCHEVROLET
  • Beginning Year1999
    Ending Year2014
    Engine FamilyCHEVY SMALL BLOCK GEN III/IV LS V8 GAS
    Engine Size5.3L/325
    Engine TypeV8
    MakeCHEVROLET
  • Beginning Year1999
    Ending Year2017
    Engine FamilyCHEVY SMALL BLOCK GEN III/IV LS V8 GAS
    Engine Size4.8L/294
    Engine TypeV8
    MakeCHEVROLET

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