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Air and Fuel› Intake Manifolds and Components

Holley

Holley EFI LS1 HI-RAM NAT KIT W 92MM TB 42LB INJ 300-122-42K

$1,924.95 $1,797.20 Save $127.75

SKU: H00E 300-122-42K

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Special Order
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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Holley Hi-Ram Intake Manifold is a cast aluminum EFI induction system for GM LS1, LS2, and LS6 engines with cathedral port cylinder heads. Designed for high-performance applications where hood clearance is not restricted, this manifold features a 92mm throttle body flange and a modular design suitable for both naturally aspirated and forced induction setups.
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Holley EFI LS1 HI-RAM NAT KIT W 92MM TB 42LB INJ 300-122-42K

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandHolley
Part NumberH00E 300-122-42K

Videos

Tech Review: Holley Hi-Ram Intake Manifolds

Tech Review: Holley Hi-Ram Intake Manifolds
7700-RPM JUNKYARD 5.3L LS INTAKE TEST. HI RAM VS LOW RAM-WHICH HOLLEY LS INTAKE MAKES THE MOST HP?

7700-RPM JUNKYARD 5.3L LS INTAKE TEST. HI RAM VS LOW RAM-WHICH HOLLEY LS INTAKE MAKES THE MOST HP?
Holley EFI Cast Intake Manifold Buyer’s Guide for GM LS and LT Engines

Holley EFI Cast Intake Manifold Buyer’s Guide for GM LS and LT Engines
WATCH THIS BEFORE INSTALLING A HOLLEY HI RAM INTAKE ON YOUR LS ENGINE

WATCH THIS BEFORE INSTALLING A HOLLEY HI RAM INTAKE ON YOUR LS ENGINE
Introducing Holley’s Compact, High-Power, Lo-Ram LS Intake Manifolds

Introducing Holley’s Compact, High-Power, Lo-Ram LS Intake Manifolds
Chi-ram vs Holley Hi-Ram: Intake manifold test

Chi-ram vs Holley Hi-Ram: Intake manifold test
Holley Performance Hi-Ram Intake and Fuel Rails | Project Last Chance C10

Holley Performance Hi-Ram Intake and Fuel Rails | Project Last Chance C10
Nitrous Express Systems for Holley Hi-Ram: SEMA 2019

Nitrous Express Systems for Holley Hi-Ram: SEMA 2019
Modernize Your Small Block Chevy Engine With Holley’s SBC Hi-Ram EFI Intakes

Modernize Your Small Block Chevy Engine With Holley’s SBC Hi-Ram EFI Intakes
PERFORMANCE DESIGN CARBON FIBER LID FOR HOLLEY HI-RAM, MID-RAM AND LO-RAM INTAKE MANIFOLDS

PERFORMANCE DESIGN CARBON FIBER LID FOR HOLLEY HI-RAM, MID-RAM AND LO-RAM INTAKE MANIFOLDS

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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