Holley Single Plane EFI 4500 Split-Design Race Intake Manifold 300-294
SKU: 54730093715

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

Sale price$269.98 Regular price$299.98
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Holley Single Plane EFI 4500 Split-Design Race Intake Manifold 300-294Overview: 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 Silver
Construction Cast
Emission Code 3
Engine GM LS1/LS2/LS6
Finish Satin
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: 54730093715

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Roy C. Coble
Pawtucket, US
★★★★★ 4
Great enrichment activity for dogs!
Color: Blue Green Orange, Color: Blue Green Orange
This mat provides excellent enrichment time for scent hounds. Our mini dachshund puppy loves finding treats hidden in the mat. It is also a very affordable option. Our puppy likes to play and sleep on it even when there aren’t treats in it. If your dog is an aggressive or obsessive chewer, I would only leave out when treats or food are hidden inside and then pick up because it will get damaged.
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Reviewed in the United States on May 29, 2026
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Amy C.
Bozeman, US
★★★★★ 5
Great puzzle mat!
Color: Blue Green Orange, Color: Blue Green Orange
My boys love these snuffle mats. Since I bought them, they are always excited when I pull them from the cabinet. It keeps them busy for a while, and they don't eat their kibbles too quickly. It's simple to clean; I just put it in the washer and hang it to dry. Suitable for small dogs, such as my babies.
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Reviewed in the United States on May 26, 2026
J
Verified Purchase
JUICY FURR
Whiting, US
★★★★★ 1
DON’T WASTE YOUR MONEY-it is CRAP!!!
Color: Blue Green Orange
What a Piece of Garbage! If I could I’d have given this ZERO STARS!!! My Dogs WON’T GET NEAR IT! Obviously it smells wrong or they sense that it is TRASH!! If I were a canine, I wouldn’t give it my consideration Either! It looks large online but when you receive it, it is a Small RAG! THIS Attempt at a SNUFFLE MAT IS INSULTING!!! DON’T WASTE YOUR MONEY on this GARBAGE‼️During the time period I had to return it, I was in the Hospital after having a Heart Attack!!I am still trying to Recover & I CANNOT DO MUCH!! Otherwise I would have returned it!!! It’s sitting in a corner in my bedroom. I had to unwrap the CHEAP PLASTIC WRAP COVER so I could even tell WHATit was. As It was diagonally Rolled UP, I had to unwrap & look at it & show it to my Dogs-The DOGS WOULDN’t get near it & now I’m STUCK WITH THIS PIECE OF GARBAGE THAT I CANNOT GET MY MONEY BACK ON‼️Yes, I am upset ! This ugly Thing hasn’t even been TOUCHED by my 3 Dogs & now I’m STUCK WITH SOMETHING USELESS THAT MY DOGS WOULDN’t even get near & I CAN’T GET A REFUND FOR!!! THIS IS THE TYPE OF TRANSACTION THAT I FIND HIGHLY OFFENSIVE ABOUT AMAZON & the Fly By Night companies they represent!!!!!
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Reviewed in the United States on April 14, 2026
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Donna McGee
Houston, US
★★★★★ 3
Nice but…
Color: Blue Green Orange
Nice but not very sturdy and it comes rolled up so it’s difficult to get it to lay down for your dog.
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Reviewed in the United States on February 7, 2026
A
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Amazon Customer
Omaha, US
★★★★★ 5
Both my dogs LOVE find the treat game time!
Color: Orange Red Blue, Color: Orange Red Blue
Both my dogs have loved this for years. Both senior dogs - great fun activity for them and they really hunt for all the treats we hide! My little one usually wins and takes over the game board then uses it as a lounger after :-) It’s very interactive with different ways to hide treats and challenge the dogs. We’ve had it awhile and it has stood up to many uses and washes. Very easy to store and simply roll out when it’s game time. Highly recommend!
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Reviewed in the United States on May 9, 2026

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