Holley LS EFI Manifold - 2x4 Dual Plane - Black - 300-121BK
SKU: 22811416508

Holley LS EFI Manifold - 2x4 Dual Plane - Black - 300-121BK

Sale price$382.48 Regular price$424.98
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Description

Holley LS EFI Manifold - 2x4 Dual Plane - Black - 300-121BKOverview: Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1 LS2 LS6 engines Features: The Holley GM LS1 LS2 LS6 2x4V dual plane was designed in the tradition of the great dual Holley 4160 induction systems that competed on drag strips, in Trans Am and at Lemans in the 1960s. The technology of the LS pushrod engine is now mated with the im The dual plane equal distribution layout produces great mid range torque without compromising top end power.

Overview:

Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1/LS2/LS6 engines

Features:

  • The Holley GM LS1/LS2/LS6 2x4V dual-plane was designed in the tradition of the great dual Holley 4160 induction systems that competed on drag strips, in Trans-Am and at Lemans in the 1960’s. The technology of the LS pushrod engine is now mated with the im
  • The dual-plane equal-distribution layout produces great mid-range torque without compromising top end power. The LS engine architecture does not utilize an intake mounted water neck or distributor so it’s perfect for two Holley carburetors and this intak
  • Carbureted and EFI versions available
  • Power band from 1500-7000 rpm
  • Appropriate for any street/performance, muscle car, or street rod enthusiast
  • Cast aluminum construction
  • Intended for use on all GM LS Gen III engines equipped with LS1/LS2 style cathedral port cylinder heads
  • Carb Flange Center-To-Center: 8-5/8”

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley EFI
Construction Cast
Emission Code 3
Engine GM Small Block Gen III/IV (LS Based)
Finish Black
Front Height 4.47 inch
Fuel System Type EFI
Manifold Type Dual Plane
Product Type Manifold
Rear Height 5.54 inch
RPM Power Band 1500-7000
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:
  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: 22811416508

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EMB
Lowell, US
★★★★★ 4
Cute but size up!
Size: Large, Color: Caramel/Pink
So cute! Runs small, though. Definitely could go up two sizes.
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Reviewed in the United States on February 6, 2026
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NVArtsy1
Cuba, US
★★★★★ 5
Granddaughter Loves This!
Size: 4T, Color: Ivory Leopard
Good quality sweater with a cute pattern. Warm but not too heavy. True to size. My granddaughter love it and says it’s nice and comfy.
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Reviewed in the United States on March 31, 2026
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Amazon Customer
New York, US
★★★★★ 5
Great Purchase !
Size: 4T, Color: Blue Cat
Precious sweater and lovely quality ! Both granddaughters 4 and 12 loved their soft adorable sweaters !💞💞
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Reviewed in the United States on May 5, 2025
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DeRobinson
Boise, US
★★★★★ 5
Who doesn't love a unicorn?
Size: 2T, Color: Pink/Unicorn
Cute set but runs a bit big in my opinion for a size 2T. My grandbaby is tall for her age (22 months), but the pants were really long and loose on her, granted she's not chunky, so factor that in. Overall, it's a nice set and the material is soft (especially the pants) and seems like it would keep the little ones warm.
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Reviewed in the United States on December 31, 2025
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Jennuh G.
Boise, US
★★★★★ 5
Cute outfit for everyday.
Size: 2T, Color: Pink/Unicorn
Exactly as pictured. Good quality, not too thin but also not too thick. True to size and looks like it will keep my baby warm when she’s inside. Good price on sale! Was a steal!
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Reviewed in the United States on December 13, 2025

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