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
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 4 - Jul 9

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 816 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Marco
Boise, US
★★★★★ 5
Great product
Color: Multicolor, Color: Multicolor
I have three aggressive, chewing dogs that absolutely love these bones. I've had them for a couple of months and they have yet to break them or damage them. Lots of chewing left.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
T
Verified Purchase
Tammy
Port Orchard, US
★★★★★ 5
Great for aggressive chewers!
Color: Orange - Maple Wood, Color: Orange - Maple Wood
Great for aggressive chewers!! My grand-dog loves it. It is slightly heavy, perfect for him. It definitely cleans his teeth. He plays with it all the time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
L
Verified Purchase
Literary Mom
Fort Morgan, US
★★★★★ 3
My dog didn’t like it
Color: Orange - Maple Wood
Dog showed no interest at all
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
M
Verified Purchase
Michael
Phoenix, US
★★★★★ 4
They approve
Color: Multicolor
They seem to like them ok
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
V
Verified Purchase
Vito
Battle Creek, US
★★★★★ 1
Was fun until it broke.
Color: Orange - Maple Wood, Color: Orange - Maple Wood
Broke on the third day after receipt while throwing in soft snow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2026

recommand products