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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
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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 379 reviews
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Product Reviews
★★★★★ 5
Fabulous
Size: 2' x 6' (Sheepskin Pelt Patchwork), Color: Ivory White
This is a beautiful rug, thick and plush delivered in such a nice packaging to protect it. I just bought two more and I will be buying two more after this. They are so nice the best one and genuine.
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Very nice sheepskin .
Size: 2' x 6' (Sheepskin Pelt Patchwork), Color: Wolf Tipped
This rug is very gorgeous , nice soft and plush. The wool is upright and even and you just want to keep touching it. It had some odor at first which is now dissipating the longer it is aired. Well worth the price. However I ordered two different colors at the same time. This is the one that I received first and am still waiting for the second one in light brown . For some reason the other was stalled somewhere in Kentucky as of this morning and upon communication a replacement was ordered by Amazon. I'm very happy with this one , just wish the frustration hadn't arisen over the shipping for other and will update or rate after I receive that one.
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Reviewed in the United States on February 17, 2026
★★★★★ 5
Beautiful in a window seat
Size: 2' x 6' (Sheepskin Pelt Patchwork), Color: Ivory White, Size: 2' x 6' (Sheepskin Pelt Patchwork), Color: Ivory White
This is soft, pure white, and of decent quality for my purposes. I saw a photo of one used in a window seat so that's where mine is white 3 lumbar pillows on the sides and back of the seat. The size is perfect. It's a little bigger than my seat so I could use the tape to pin one side to each wall and also over the seat. I guess it all depends on what you are using it for to determine if you'll like it. I have a large sheepskin rug in another room. This one in my opinion is too skinny to be used as a rug. I haven't detected a smell at all.
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Reviewed in the United States on December 24, 2025
★★★★★ 5
Soft to the touch
Size: 2' x 6' (Sheepskin Pelt Patchwork), Color: Black
Soft to the touch and well made. Love it!
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Reviewed in the United States on May 28, 2026
★★★★★ 5
It's real!
Size: 2' x 3' (Sheepskin Pelt Patchwork), Color: Ivory White
Off white but totally happy. Even though it's wool, it doesn't itch and is very soft. The patches are few and not at all noticeable from front. Very thick and looks great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
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