SKU: 67223749784

Holley Single Plane EFI 4500 Split-Design Race Intake Manifold 300-294BK

Sale price$382.48 Regular price$424.98
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Ships within 48 hours Β· Estimated delivery Jul 15 - Jul 20

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Description

Holley Single Plane EFI 4500 Split-Design Race Intake Manifold 300-294BKOverview: The new Holley Single Plane Race intake manifold is designed with maximum performance in mind. Featured is a two piece split design that provides access for all levels of porting and modification. With shoulder bolt locators and O ring seal, disassembly & reassembly is simple and precise. The manifold with AN 8 fuel rails fits GM LS Gen III engines with cathedral port heads and has a 4500 Dominator style carb flange for carburetors, EFI

Overview:

The new Holley Single-Plane Race intake manifold is designed with maximum performance in mind. Featured is a two-piece split design that provides access for all levels of porting and modification. With shoulder bolt locators and O-ring seal, disassembly & reassembly is simple and precise. The manifold with AN-8 fuel rails fits GM LS Gen III engines with cathedral port heads and has a 4500 Dominator style carb flange for carburetors, EFI throttle bodies, or EFI throttle body elbows, and is configured with a LS MAP sensor port along with other NPT plenum vacuum or air-temp sensor ports. The LS Race single-plane intake manifold is designed for hi-performance/racing engine applications, 5.3 to 6.2+ liter displacements, N/A or with power adders. The large volume 4500 plenum and optimized runners provide airflow potential for Hi-RPM engines with max power at 7500-8000+ RPM.

Features:

  • Maximum performance 4500 Dominator flange race design with hood clearance consideration
  • Lighter than other split race intakes
  • Split feature making porting efforts easy!
  • 33 to 50% the price of other split race intakes
  • Captured O-ring seals at head ports and plenum split
  • Vacuum Port options include (2) 1/8, (1) 1/4, and (1) 3/8, NPT ports at the carb flange
  • Two versions available: EFI type - Billet Fuel Rails and rail mounting hardware included, or Carbureted / Sniper EFI 4500 TBI style

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Barrels 4
Brand Holley
Color Black
Construction Cast
Emission Code 3
Engine GM LS1/LS2/LS6
Finish Black
Flange Style 4500
Front Height 7.32"
Fuel System Type EFI
Manifold Type Split Single Plane
Product Type Manifold
Rear Height 7.32"
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:
  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: 67223749784

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Pamela M. Griffin
Belleville, US
β˜…β˜…β˜…β˜…β˜… 5
Perfect fit
Color: Light Grey, Size: Medium
This suit was a perfect fit for my son! It was true to size.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
A
Verified Purchase
Amazon Customer
Pawtucket, US
β˜…β˜…β˜…β˜…β˜… 4
Pretty good
Fits according to size guide but I would have liked a slimmer fit. Also there are no pictures of the back of the jacket and it does have details we are not crazy about. Decent for the price
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Reviewed in the United States on September 21, 2025
L
Verified Purchase
Lynn S
Draper, US
β˜…β˜…β˜…β˜…β˜… 5
Great suit!
Color: Dark Green, Size: X-Large, Color: Dark Green, Size: X-Large
Great suit combo and for a great price. Bought this for a wizard of oz themed fundraiser for my hubby who went as the wizard. Received many compliments! My husband is 6’ 2”, about 230, and this is an XL, so it runs really slim. He has a long torso, and his pant length is 30”, so the pants are a little long, but easily fixed! Highly recommend!
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Reviewed in the United States on March 16, 2026
A
Verified Purchase
Area313
Port Orchard, US
β˜…β˜…β˜…β˜…β˜… 3
Pretty good for something quick
Color: Black, Size: X-Large
Nice quality but the pants were tighter than what my kid wanted.
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Reviewed in the United States on April 5, 2026
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Maria Stean-Short
Natrona Heights, US
β˜…β˜…β˜…β˜…β˜… 5
Perfect Slim fit.
Color: Navy Blue, Size: Large
Amazing fit for a young teen.
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Reviewed in the United States on March 31, 2026

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