Base Manifold and Rail Kit for Lo-Ram 300-620 - 300-600
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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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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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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dkz
Lake Worth, US
★★★★★ 5
Good quality and do the job!
Color: 20PCS
This are as described, good quality, and work perfectly. Highly recommend.
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Reviewed in the United States on May 7, 2026
A
Verified Purchase
Amanda
Massapequa, US
★★★★★ 5
So far so good
Color: 20PCS
Splash shield on my Honda civic 2015 fell off and purchased these to clip it back on. So far so good. They fit. So hope they last!
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Reviewed in the United States on February 7, 2026
A
Verified Purchase
Andrew Branson
Lexington, US
★★★★★ 5
Good quality for cost.
Color: 20PCS
As described. Good quality for cost. Used on my 2017 honda civic.
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Reviewed in the United States on April 25, 2026
A
Verified Purchase
Annie
Lake Worth, US
★★★★★ 5
Good quality!
Color: 20PCS
Item is as decscribed and very good quality. Work great for what I needed them to do. Much cheaper then going to the dealer! A+
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Reviewed in the United States on February 18, 2026
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Verified Purchase
LovesAmazon24
Whiting, US
★★★★★ 5
High quality replacement clips. Highly recommend.
I used these when replacing the headlight assemblies on my 2011 Honda CR-V. A few clips were already missing before I even started taking the bumper off, and of course a couple more didn’t survive the job. These fit perfectly and snapped right in with no issues. If you’re missing clips or break some while doing a repair, these are a simple fix that gets everything secured again. Very good deal.
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Reviewed in the United States on March 8, 2026

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