SKU: 21388622380

Base Manifold and Rail Kit for Lo-Ram 300-620 - 300-600

Sale price$299.68 Regular price$332.98
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Description

Base Manifold and Rail Kit for Lo-Ram 300-620 - 300-600Overview: The Holley LS1 2 6 Lo Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1 2 6 (cathedral port) cylinder heads. These intake manifold and rail kits will work with OE (Original Equipment) or aftermarket cylinder heads. The 300 600 is the lower manifold in the 300 620 complete kit. Offering this separately allows you to select your components individually as you build your system. The Lo Ram intake

Overview:

The Holley LS1/2/6 Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads. These intake manifold and rail kits will work with OE (Original Equipment) or aftermarket cylinder heads. The 300-600 is the lower manifold in the 300-620 complete kit. Offering this separately allows you to select your components individually as you build your system. The Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the 105 mm throttle body part number 112-581 or similar models. The base intake manifold is designed with a low height to aid the packaging of a plenum mounted air-to-water intercooler in a top-feed configuration. The short runner, low-profile base intake manifold intended for forced induction applications was conceived to package with an air to water plenum mounted intercooler with a shorter overall height than possible with other existing intake manifolds. The fuel rail kits come with two sets of brackets. A set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors.

Features:

  • Base manifold and rail kit for Low-Ram 300-620 allows you to select your components individually as you build your intake system
  • Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
  • Low height to aid the use of a plenum mounted air-to-water intercooler in a top-feed configuration
  • Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application
  • High volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley EFI
Color Silver
Emission Code 3
Engine GM Small Block Gen III/IV (LS Based)
Finish Cast
Fuel System Type EFI
Manifold Type Lo-Ram
Product Type Manifold
Warranty Limited 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 21388622380

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Cheryl Forch
Massapequa, US
★★★★★ 5
Viva for the win!
Package Size Name: Family, Size: 286 Count (Pack of 6)
Best paper towels, sad they don't sell them in most stores anymore but...thankful I can still get on amazon...they are stronger than other paper towels, softer but not weak and great for body use IF you needed to..can you tell I ran out of tissues? Seriously the best! Bounty who?
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Reviewed in the United States on January 5, 2026
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Doug Keiser
Massapequa, US
★★★★★ 5
Deliveries are on time, product is always in great shape
Package Size Name: Family, Size: 286 Count (Pack of 6)
Great product and delivery is always on time👍
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Reviewed in the United States on April 8, 2026
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En Em
Whiting, US
★★★★★ 5
the absolute BEST paper towels
Package Size Name: Super, Size: 81 Sheets (Pack of 24)
These are the best paper towels, Ever. We now exclusively buy them and this multi pack is a good value. The paper towel sheet feels more like cloth than paper towel, they are exceptionally soft, but sturdy and hold up and can really clean a lot with even one sheet. Very absorbent and I cannot stress how soft they are. These seriously are the only paper towels that we will use anymore, and have been using for the past 5 years. Cannot recommend these enough
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Reviewed in the United States on January 12, 2024
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Kim
Massapequa, US
★★★★★ 5
Best, eve!
Package Size Name: Super, Size: 81 Sheets (Pack of 24)
These are the best, softer than tissues & toilet paper. Whenever someone is over and uses one they can’t get over how great they are. Will never buy go any other paper towels.
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Reviewed in the United States on May 9, 2026
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Dylan Grise
Draper, US
★★★★★ 4
Best paper towels on the market
Package Size Name: Super, Size: 81 Sheets (Pack of 24)
We have these on deck all the time. Absorbency is great but for windows and mirrors they always leave residue.
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Reviewed in the United States on April 27, 2026

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