SKU: 76761739957

Holley Mid-Rise Plenum Base Adapter Kit - GM LS1/LS2/LS6 300-267

Sale price$140.37 Regular price$155.97
Save 10%

Pay in installments of $38.99 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley Mid-Rise Plenum Base Adapter Kit - GM LS1/LS2/LS6 300-267The Modular Mid Rise intake utilizes the popular Holley LS1 LS2 LS6 cathedral port Mid Rise 2 x 4 intake manifold along with a plenum base adapter and a Holley 92MM EFI plenum top which converts it into a Mid Rise EFI intake manifold. For use with LS Dual Plane Mid Rise intake manifold base to adapt to modular tops. NOTES: Holley EFI LS main harnesses have a map sensor connecter designed for use with an LS1 2 style map sensor. The 558 416 is an

The Modular Mid-Rise intake utilizes the popular Holley LS1/LS2/LS6 cathedral port Mid-Rise 2 x 4 intake manifold along with a plenum base adapter and a Holley 92MM EFI plenum top which converts it into a Mid-Rise EFI intake manifold.

For use with LS Dual Plane Mid-Rise intake manifold base to adapt to modular tops.

NOTES: Holley EFI LS main harnesses have a map sensor connecter designed for use with an LS1/2 style map sensor. The 558-416 is an adapter harness that can be used to adapt any LS harness that uses a LS1/2 MAP sensor connection to a LS3 MAP, which is recommended for this manifold.

Features:

  • Provides great performance to 6500 rpm for street/strip performance applications while providing the look of a racing EFI intake manifold
  • Unique modular design allows the combination of a traditional dual-plane layout with an EFI manifold plenum to produce great mid-range torque without compromising top end power
  • Great for supercharged or turbocharged engines
  • Power band from 1500-6500 rpm
  • May require an aftermarket hood for some vehicle applications.
  • Cast aluminum construction
  • Intended for use on all GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads (recalibration of the ECU may be required when using this intake manifold design with OE ECU).

Specs:

Brand Holley
Emission Code 3
Grade Type Performance
Manifold Color Cast
Manifold Material Aluminum
Manifold Mount Hole Quantity 12
Material Aluminum
Product Type Intake Manifold
Type of Component Manifold Top
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: 76761739957

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.5 ★★★★★
Based on 25 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
G
Verified Purchase
Grammy H
Draper, US
★★★★★ 5
Perfect fit this time
Theses are great Thanks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2023
I
Verified Purchase
Icewalker
Phoenix, US
★★★★★ 5
I'm impressed! Simple but quite effective, affordable, properly designed
Color: Walnut Wood
I normally don't review items unless I am very impressed or feel I need to review to warn others of a particularly poor product. In this case I am highly impressed! Great price (compare to others made from plastic), well designed and quality construction. Simple but quite effective. Quality wood support, smooth sanded and beautifully finished.. The wood support is designed and created to properly support headphones without damage to the headband as a simple hook or peg design might I have a home recording studio and don't want some cheap shlopck headphone holder to damage my $300 headphones in any way. This support is very reasonably priced, and offers 2 ways to mount. Included double sided self adhesive or using a screw through the hole at the top of the metal bracket. Screw mounting hardware is included. The metal bar used is incredibly robust but is well suited aesthetically to complement the wood rest. I would recommend to my friends or anyone who wants a quality, I expensive, and affection headphones holder. Don't hesitate to purchase, you won't be sorry!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2025
G
Verified Purchase
G.P.B.
Draper, US
★★★★★ 5
Awesome Quality great for my headphones
Color: Walnut Wood
I recently purchased the Wood Headphone & Headset Wall Mount in Black, and it has truly transformed my workspace! The space-saving design is a game-changer, instantly decluttering my desk and giving it a sleek, organized look. The curved bearing area is a thoughtful touch, ensuring that my headphone head beam remains in perfect condition without any risk of deformation or dents. The combination of aluminum alloy and wood not only gives it a modern aesthetic but also makes it incredibly sturdy and strong. I was initially skeptical about using double-sided tape, but the 3M tape provided proved to be exceptionally reliable. The mount is securely adhered to my wall, and I can trust that it will never break or fall. What I love most is its versatility – it accommodates all types of headphones, even the heaviest ones, and I've even used it to hang my handbags and backpacks. It's truly a versatile and practical solution for anyone looking to optimize their workspace. I highly recommend the Wood Headphone & Headset Wall Mount for its durability, functionality, and the aesthetic upgrade it brings to any room!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2023
A
Verified Purchase
Ann
Louisville, US
★★★★★ 5
Good product
Color: Walnut Wood
Good product. Looks good, attaches firmly to a table with the 3m tape, holds my headphones very nicely.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
B
Verified Purchase
Brian D.
Lake Worth, US
★★★★★ 5
Elegant, simple and effective
Color: Walnut Wood
Nothing negative to say about this holder. Does what it should while not taking up much space. The wood grain looks great. Definitely recommended.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 20, 2026

recommand products