SKU: 71932378672

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

Sale price$449.98 Regular price$499.98
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Ships within 48 hours · Estimated delivery Jul 22 - Jul 27

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Description

Holley Modular Lo-Ram EFI Manifold LS1/2/6 - 300-621Overview: 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 Silver
Construction Cast
Emission Code 3
Engine GM Small Block Gen III/IV (LS Based)
Finish Satin
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: 71932378672

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Anna S
Chelsea, US
★★★★★ 3
Looks nice, but rusted after 6 months of use
Color: Black
The caddy was aesthetically pleasing, with enough room to hold my dish soap, hand-soap and sponge as well as a brush. I really love how it looks, but only after 6 months of using this, the wires in the holder is already rusted. It looks nice but not really of good quality.
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Reviewed in the United States on February 2, 2026
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V. h
Belleville, US
★★★★★ 5
Matching well
Color: White
Cute and practical
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Reviewed in the United States on April 8, 2026
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Doris Rodriguez
Massapequa, US
★★★★★ 5
I love it
Color: White
I love! Good quality, good size
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Reviewed in the United States on March 10, 2026
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emknavy
Pawtucket, US
★★★★★ 3
Cheap plastic, Stains
Color: White, Color: White
Cheap plastic holds the soap. The pump is also cheap plastic. The fake marble stains easily. Water builds up in the bottom and causes a stench so you have to wash it everyday. Not worth it, keep looking.
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Reviewed in the United States on October 2, 2025
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Samsung
Waukegan, US
★★★★★ 5
Ecxelente
Color: Black
Super functional.
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Reviewed in the United States on April 8, 2026

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