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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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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Dana Zorn
Carnegie, US
★★★★★ 5
Love these for super chewers
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I have two pit bulls and they destroy everything. These have held up very well for weeks. I use the cups for their morning yogurt and can even use hot water wand soap to wash them out. These are a great value for the money and the dogs love to carry them around in their mouths and even tug o war with them. Highly recommend.
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Carla Savini
Boise, US
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Good
Flavor Name: REAL Bacon, Size: Medium
Decent product, my dog likes it, except I think it’s made of some kind of plastic
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Reviewed in the United States on March 3, 2026
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Katherne Linscomb
Port Orchard, US
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My dogs love these so much, seems to keep my girl meatballs teeth clean. Both of them go craft for these, they chew on them almost all day, it keeps them busy. I bought other brands of these but they had this jelly filling that wasn’t safe for them, so I switched to this peanut butter one that seems a lot healthier and is a lot safer for my dogs (in a sense they won’t choke on it from basically inhaling it again 😭) and they are still interested in the bone once it’s empty, so it’s a toy that lasts forever. Overall an amazing cheap dog find on here
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RL
Natrona Heights, US
★★★★★ 5
Great!
Flavor Name: Peanut Butter, Size: 6.9 Ounce (Pack of 1)
This is such a perfect treat for dogs! They can chew and play with it for hours. No mess or stinky smell. Bang for your buck! It lasts long but as soon as you can see any sharp edges, simply throw it away just to be on the safe side.
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Chelsea, US
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My pup loves it
Flavor Name: Peanut Butter, Size: 6.9 Ounce (Pack of 1)
Great product and fast shipping
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Reviewed in the United States on March 1, 2026

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