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Description
Holley Single Plane EFI Intake-GM LS1/LS2/LS6 - Black - 300-137BKOverview: Single Plane EFI LS Intake Manifold. All GM LS Gen III or IV engines equipped with LS1 LS2 LS6 style cathedral port cylinder heads. Black Ceramic Coating to provide you with that aggressive look in your engine compartment. Features: Black ceramic coating provides an aggressive look to your engine compartment 2500 7000 RPM power band 4150 Square bore flange Optimized runner layout and constant cross sectional area broad torque curve, best
Overview:
Single Plane EFI LS Intake Manifold. All GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads.
Black Ceramic Coating to provide you with that aggressive look in your engine compartment.
Features:
- Black ceramic coating provides an aggressive look to your engine compartment
- 2500-7000 RPM power band
- 4150 Square bore flange
- Optimized runner layout and constant cross sectional area - broad torque curve, best vehicle performance from 2500-7000 RPM
- Minimum carb flange height - fit in vehicles with minimum hood modifications
- Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS power adder applications
- Efficient casting design - lightweight, consistent wall thicknesses, improved casting quality
- Weight - 11.5 lbs.
- Height (front) - 5.417" to the lifter valley cover flange at the engine block front flange
- Port size - 2.50" height x 1.15" wide
- Includes Viton® O-ring intake to cylinder head gaskets - Viton® is a registered trademark of DuPont Performance Elastomers
- Kit does not work with factory fuel rails and requires the use of Holley Fuel Rail Kit P/N 534-219
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley EFI |
|---|---|
| Construction | Cast |
| Emission Code | 4 |
| Engine | GM Small Block Gen III/IV (LS Based) |
| Finish | Black |
| Front Height | 5.417 inch |
| Fuel System Type | EFI |
| Manifold Type | Single Plane |
| Product Type | Manifold |
| Rear Height | 5.417 inch |
| RPM Power Band | 2500-7000 |
| 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:
- 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
4.6 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
A purchase that exceeded my expectations!
Color: White Marble 5-tier, Size: 1PC
I am really delighted with this marble shelf. From the moment I received it, I knew it was the perfect choice for my business. The quality of the marble is exceptional: elegant, resistant and with an impeccable finish that adds a sophisticated touch to any space. In addition, its design is modern and functional, making it ideal for displaying products or items in an organized and stylish way. Installation was easy and the dimensions fit my needs perfectly. I would definitely recommend this shelf to anyone looking for a durable, beautiful piece of furniture that elevates the aesthetics of their business - a purchase that exceeded my expectations!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 24, 2025
★★★★★ 5
Easy to assemble
Color: Rustic Brown 5-tier, Size: 2PCS, Color: Rustic Brown 5-tier, Size: 2PCS
Very nice and sturdy easy to build, great price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 20, 2026
★★★★★ 4
Easy to assemble.
Color: White Wood 5-tier, Size: 2PCS
I like that this item comes as a set of two. I found these to be very easy to assemble. The shelves came with plastic anchors and wood screws to mount them on the wall, but my husband and I chose molly-bolts for a more permanent and safer installation. The were easy to put together and not difficult to mount on the wall, but you need two people. The shelves are a good width and depth for what I am using them for. The measurements are as shown. They look nice on the wall of our guest room for out grandchildren and house their books on the lower shelves and other books and decor on the upper shelves which makes it nice. We can still display favorite items and keep them out of their reach - for now!
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Reviewed in the United States on May 31, 2025
★★★★★ 5
Easily put together
Color: Black Wood 5-tier, Size: 2PCS, Color: Black Wood 5-tier, Size: 2PCS
Not done with the decor but so far I love them
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Nothing
Color: White Marble 5-tier, Size: 2PCS, Color: White Marble 5-tier, Size: 2PCS
When I was moving they bent easily
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Reviewed in the United States on May 7, 2026