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Description
Mid-Rise Plenum Base Adapter Kit - GM LS1/LS2/LS6 - Black 300-267BKMid Rise Plenum Base Adapter Kit GM LS1 LS2 LS6 Black 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
Mid-Rise Plenum Base Adapter Kit - GM LS1/LS2/LS6 - Black
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).
- Black Ceramic Coating for an aggresive look in your engine compartment
Specs:
| Brand | Holley |
|---|---|
| Emission Code | 3 |
| Engine | GM LS1/LS2/LS6 |
| Finish | Black |
| Grade Type | Performance |
| Manifold Color | Black |
| Manifold Material | Aluminum |
| Manifold Mount Hole Quantity | 12 |
| Product Type | Intake Manifold |
| Type of Component | Manifold Top |
| Warranty | Limited 90 Day |
Shipping Notes
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.2 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Nice Product
Color: 2 Tier-Black, Color: 2 Tier-Black
Super Handy and So Stylish — A Must-Have for Any Kitchen!
I’m really impressed with the Sinnsally Kitchen Sponge Holder! It’s simple, practical, and makes keeping my sink area neat so much easier. The 2-tier design is brilliant — the top shelf holds my sponges perfectly, while the bottom area keeps scrubbers and brushes organized and easily accessible.
The stainless steel looks sleek and modern, and it has held up beautifully with daily use. Water drains well so everything dries quickly, and cleanup is a breeze. No more soggy sponges sitting around!
Installation was quick and easy — it fits nicely right by the sink without taking up too much space. This little holder has made a big difference in keeping my kitchen tidy.
Highly recommend for anyone who wants a clean, organized sink area with a touch of style!
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Reviewed in the United States on March 3, 2026
★★★★★ 5
Great space saver
Color: 2 Tier-Black
I love how this makes my sink so much more organized. For me, it holds a 20oz dish soap, a dish spray, 2 S.O.S. pads, 2 sponges, a steel wool scrubber, a bottle brush, a Stanley cap cleaner, and a sink stopper. I could still fit more if I wanted to. I can move the tall brush holder to whichever side I want, as well as the divider. It was super easy to put together, and functions well by draining all the drips right into my sink, instead of behind it. The black looks great and matches my kitchen well. This organized is built well and keeps mynsink area tidy and hygienic.
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Reviewed in the United States on May 18, 2025
★★★★★ 5
It Looks Nice and It Works
Color: 1 Tier-Black
I like it. It is too long for my sink area, but it still works. Next to my sink is a dish rack.
One half of the caddy fits perfectly behind it, holding a 16oz bottle of dish soap and
a 16oz bottle of multi-surface cleaner. The part of the caddy that fits on my sink ledge
holds a sponge, scrubber and scouring pad, The caddy works great at keeping the ledge
dry. It is a very nice, well-designed item. I recommend this caddy it's keeps everything
organized and dry.
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Reviewed in the United States on April 23, 2026
★★★★★ 4
Good for organization, looks neat!
Color: 2 Tier-Black
I've had this for almost a year now and expect to have it for a few more; seems very durable. The drain board thingy requires consistent cleaning every few days, but its done in less than two minutes. I usually wash the entire thing every two weeks to keep it shiny as well. I am seeing a little bit of rust, but it's not too much and it's not noticeable if you don't look for it. It's great for organization and was easy to assemble. A very sturdy and well-sized product.
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Reviewed in the United States on January 21, 2026
★★★★★ 5
Serves purpose and holds what it was intended to
Color: 2 Tier-Black, Color: 2 Tier-Black
I like it. Keeps things organized and handy in small kitchen. The attachable bin holding my brushes I put on outside of unit not inside as company pics show it. That bin only has one clip to hold it in place. This makes it a little wobbly if you want to place it on the outside like I did. I used 2 trash bag twisties to help tighten it into place. Doing this made it no longer lose and the inside area space larger to hold both of my soaps. Fits everything I need it to. I appreciated the little lever on bottom that moves for water drainage. My sink design doesn’t work for the other drainage design I found these to have online.
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Reviewed in the United States on February 6, 2026