4.7 · 3 reviews
SKU: 300-923

Plenum Lid, Ford Coyote Ultra Lo-Ram

$306.99
FREE delivery
Description

ABOUT THIS PRODUCT

The aggressively designed Hi-Ram is constructed in a two-piece design to accommodate for air to water intercoolers and feature up to 20% more plenum volume versus Ultra Lo Rams. This manifold design is only offered in an oval throttle body configuration. The Ultra Lo-Ram provides an additional 19.4mm front and 42.6mm rear clearance compared to the Ford Performance Cobra Jet manifold, plus clears 2015-2023 Mustang factory hoods. Offered in both round and oval throttle body configurations, with replacement front inlets for easy interchangeability. The oval inlet can accommodate up to a 150x66mm single throttle body and 93mm on the round variant. Round inlets include standard mounting provisions for GT350, GT500, and LS 4-bolt throttle bodies. 2011-2023 GT throttle bodies can be used with the optional 717-18 adaptor. Finally, an affordable Coyote intake manifold that also performs! The Hi-Ram and Ultra Lo-Ram are designed to fit stock bolt pattern OE heads found on the 2011-2023 Ford 5.0 Coyotes and related engine families, such as, Voodoo and Predators. These kits include fuel rails for use with OEM type fuel injectors and clips, mounting hardware, and O-ring gaskets. Offered in black and natural as-cast finish, both manifolds have a 9.20-inch runner length and are designed to improve the mid to high RPM powerband.

Product Features:
  • Allows a variety of throttle valves including large monoblade, 2015-20 GT350, 2007-14 GT500, 2019-23 GT500, GM LS 4 bolt, 2011-23 Ford Mustang GT (with optional adapter 717-18)
  • Refined port design with streamlined injector boss for reduced turbulence without loss of flow area
  • 300-911 and 300-912 Ultra Lo-Ram will fit under stock hood with stock engine mounts in 2015-23 Mustang
  • Fuel rails with -8AN ports and dual 1/8 NPT accessory ports for gauges or Gen 3 direct injection fuel line hookup
  • Allows a variety of throttle valves including large monoblade, 2015-20 GT350, 2007-14 GT500, 2019-23 GT500, GM LS 4 bolt, 2011-23 Ford Mustang GT (with optional adapter 717-18)
  • Fuel rails with -8AN ports and dual 1/8 NPT accessory ports for gauges or Gen 3 direct injection fuel line hookup
  • 300-911 and 300-912 front inlets can be interchanged between round and oval with service parts
  • Plenum Volumes: 300-910 9.8-liters, 300-911 8.4-liters, 300-912 8.2-liters
  • Two 1/8 NPT ports on all manifolds. Two 3/8 NPT ports on all manifolds, except 300-911 has one
Specifications
Brand
Holley EFI (770)
SKU
300-923
Product type
Automotive
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Returns Policy
Shipping Information

Free shipping on all orders. Most items ship next business day after your order is placed.

Returns Policy

Returns are accepted when the product is in its original, unopened container. Contact us if you have questions about your order.

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Customer Reviews

4.7

Based on 3 reviews

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C
Chris W. Verified Buyer
07/05/2025

Highly recommend

Good experience overall from checkout to delivery.

J
Jordan L. Verified Buyer
04/15/2025

Very happy with this

Packaging was secure and the item was in perfect condition.

E
Emma S. Verified Buyer
12/14/2025

Exactly what I needed

Easy to order and arrived quickly. Product matched the listing and works great.

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