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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
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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 1048 reviews
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Product Reviews
★★★★★ 5
Definitely recommend this!
Format: Kindle
This is a wonderfully written and beautifully illustrated story about a boy teaching others to be kind. There are many examples of being kind with even more suggestions at the end of the book. We ALL need to be kind to others because the world is a better place to be if we respect others and are nice to them. Being mean or selfish diminishes us and makes the world more inhospitable.
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Reviewed in the United States on June 13, 2025
★★★★★ 5
11/10 would buy again for my sped-classroom
Format: Audiobook
11/10, just but it its great for all ages.
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Reviewed in the United States on March 22, 2026
★★★★★ 4
Feelings
Format: Paperback
Written well but for age of lower level for understanding and attention
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Reviewed in the United States on February 24, 2023
★★★★★ 5
Good reading
Format: Hardcover
How could you go wrong with a book like this? Great for kids and adults alike
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Reviewed in the United States on February 22, 2026
★★★★★ 5
Such an Adorable Book
Format: Kindle
This book was one I originally borrowed on Kindle to read to my twin niece and nephew to hopefully help them stop fighting. The book was so adorable, I bought it for Kindle to make sure I always had a copy. While the message is great, treating others with kindness, the illustrations and rhymes are what make it unique. There are some larger words used, but they are all in a clear context to help build vocabulary. The twins loved the farm animals and I actually used the book as part of a lesson on kindness for my Sunday school class who also enjoyed it. Even though I already have the Kindle version, I am ordering paper copies to give as Christmas gifts this year. I love this author, the illustrations, and the message. This is the type of children's book everyone can enjoy and agree on.
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Reviewed in the United States on June 27, 2021