Product Summary

No Value" Overall Thickness, No Value" Overall Height

  • 8 O-rings for intake-to-cylinder head port seals
  • 1 O-ring cord for the plenum top seal
  • Designed for Coyote Hi-Ram and Ultra Lo-Ram intake bases
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Key Specs

MFG. Part #508-55
BrandHolley
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Holley 508-55 Details

The 508-55 Coyote Hi-Ram and Ultra Lo-Ram Plenum Seal Kit provides the intake manifold-to-plenum gasket material (O-ring seal) and the intake manifold-to-cylinder head O-rings needed to seal Holley's Coyote Hi-Ram and Ultra Lo-Ram intake manifold bases (300-920 and 300-921). For use with 2011-2023 Ford 5.0L Coyote, Voodoo, and Predator engines.
Features:
8 O-rings for intake-to-cylinder head port seals
1 O-ring cord for the plenum top seal
Designed for Coyote Hi-Ram and Ultra Lo-Ram intake bases
Seal Kit

Specs

  • Brand: Holley EFI
  • Category: Intake Manifolds
  • Color: Black
  • Configuration: Multi Piece
  • Emission Code: 3
  • Engine: Ford Coyote
  • Grade Type: Performance
  • Material: Rubber
  • Product Type: Seal Kit
  • Seal Type: Gasket O-Ring
  • Warning: California Proposition 65

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Holley 508-55 Specifications

KEY SPECS
MFG. Part #508-55
BrandHolley
GENERAL
Sold in QuantityEach

Questions & Answers

Fitment

  • Ford Coyote Gen 1

  • Ford Coyote Gen 1

  • Ford Coyote Gen 2

  • Ford Coyote Gen 4

  • Ford Predator

  • Ford Voodoo

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