SKU: 63460473297

Holley Modular Lo-Ram EFI Manifold LS1/2/6 - 300-621BK

Sale price$494.98 Regular price$549.98
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

Holley Modular Lo-Ram EFI Manifold LS1/2/6 - 300-621BKOverview: 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 manifolds will work with OE or aftermarket cylinder heads. 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

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 manifolds will work with OE or aftermarket cylinder heads. 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 lower overall height to fit under a stock or mildly modified hood in the front-feed configuration. The 300-621 Lo-Ram front-feed plenum entry was configured to provide a very low profile modular intake manifold suitable for turbocharged or centrifugally supercharged engines. 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:

  • Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
  • Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
  • With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used
  • Modular design allowing the use of front-feed plenum entry
  • Intake design facilitates custom inlet duct and throttle body placement
  • Low height to fit under a stock or mildly modified hood in the front-feed configuration
  • Front entry plenum flange allows design & fabrication of special throttle body adapters or inlet ducts for custom installations
  • Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification
  • 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 Black
Construction Cast
Emission Code 3
Engine GM Small Block Gen III/IV (LS Based)
Finish Black
Flange Style EFI
Front Height 6.86" height with throttle body adapter
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: 63460473297

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4.8 ★★★★★
Based on 6 reviews
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Product Reviews
S
Verified Purchase
S. Saad
Pawtucket, US
★★★★★ 5
Great product
Color: 7-in-1 Silver, Size: Rechargeable Set
Totally effortless for an amateur. Useful accessories
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
J
Verified Purchase
Jan in Florida
Waukegan, US
★★★★★ 5
Join the Wine Life!
Color: 7-in-1 Silver, Size: Rechargeable Set
We love this wine opener! So easy, so smooth. Like magic!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 23, 2025
D
Verified Purchase
drcarrell
Natrona Heights, US
★★★★★ 5
Professional quality
This works beautifully. The cork removal is smooth and easy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
C
Verified Purchase
Chris S.
San Leandro, US
★★★★★ 5
Works great and attractive
Works great, easy to use and attractive. Lightweight, doesn't take up a lot of space. Battery seems strong. Foil cutter works great. Good buy!
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Reviewed in the United States on May 12, 2026
A
Verified Purchase
Amy C
West Palm Beach, US
★★★★★ 5
GREAT product!
I have had mechanical wine openers before and found them to be more annoying and more time consuming than just using a traditional corkscrew. NOT the case w/this one. So.... 1. display: the charger station is small enough in size that it would fit in most any location w/o taking up too much space. For those that do not like clutter or one more "gadget" to sit out, this is a good size. The charging station has a little holder for the foil cutter as well which is great and keeps all parts together so no one has to search drawers when ready to open the bottle. There is a blue light that glows while being charged and is very pleasant to look actually and is a nice touch. so it actually looks really good sitting on top of the wine rack. Mine happens to be right next to an electrical plug on the wall so does not reveal the hanging cords or wires. 2. function: works great so far and have opened quite a few bottles. very easy to use. would suggest holding the bottle by the fatter part toward the middle and then using the other hand to work the corkscrew. does not work well if the bottle sits on the counter unless you have a good solid grip on the base. Its actually easier to just pick up the bottle and do it that way. of course that's after using the foil cutter which gives a perfect cut and removal each and every time. 3. battery life: i think the product says it can be used for 30 bottle openings during a single charge. that is quite more wine that most people would be going through in an evening so i don't think anyone would have an issue w/keeping a charge. I use it and then put directly back on the charging station as i do my mechanical salt and pepper grinders. that way, its always on the cradle and charging. as mentioned there is a blue light that glows in the actual item while its charging and i like the way it looks so would have no reason to keep it off the charger anyway. this also makes a GREAT gift especially a house warming gift to anyone who drinks wine or entertains
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Reviewed in the United States on October 14, 2020

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