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Holley Performance Holley Hi-Ram Lower Manifold 300-125


EFI Fits 1x105mm Throttle Body - Hi-Ram Manifold - Front/Rear Height 8.42 in. - RPM Power Band 1500-7000 - Satin Finish

Pricing: $804.95


Holley Performance - Holley Hi-Ram Lower Manifold P/N 300-125 Features:

  • Base Plenum Top Mtg Flange H 8.42in. Lifter Valley Cvr Flange
  • Total Height With 92/105mm Plenum Top 12.32 in.
  • Port Size 2.49 in. Height X 1.21 in. Wide
  • Mounting Flange Gasket Type Standard LS3 Molded O-Ring
  • Plenum Top Gasket Type 3/32 in. Round O-Ring Cord
  • Throttle Body Flange Location w/92/102mm EFI
  • Runner Length 6.29 in. As-Cast
  • Plenum Top: Height 8.42 in.
  • Longitudinal Location 3.84 in.

Product Documents:


Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCAR Sprint Cup team and every NHRA Pro–Stock champion. Holley's products include performance fuel pumps, fuel injection, intake manifolds, cylinder heads & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies, Hooker Headers, Flowtech Headers, NOS, Weiand, or Earl's, Holley products can give you the edge you need over the competition.


  • 300-125
  • 300-125
  • 090127681701
  • Holley Performance
  • New

Shipping Information

  • Item Requires Shipping
  • 35.0 lbs.
  • W14.7500” x H13.0000” x L24.0000”

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