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Skunk2 Ultra Series Intake Manifold (Silver Spacer) - K-series

Skunk2 Ultra Series Intake Manifold (Silver Spacer) - K-series

SKU: 307-05-8000

Regular price $788.99
Sale price $788.99
This is an estimated ship date once your order is placed from JHPUSA. Ship dates do not include weekends and holidays.

The engineers at Skunk2 Racing have worked tirelessly to develop the next generation of high performance intake manifolds and are proud to announce the release of the much anticipated Ultra Series Intake Manifold. Years of R&D have culminated in a multi-piece cast aluminum intake manifold that offers advantages that only a modular design could allow.

Building upon the performance legacy of our Pro Series Intake Manifold, as well as using the latest in CFD (Computational Fluid Dynamics) software; Skunk2 Racing has created a three-piece modular design that allows for easy dis-assembly, porting, and plenum volume changes through the use of a removable plenum and optional plenum spacers. In addition to CFD testing, the Ultra Series Intake Manifold has undergone extensive in-house dyno and on-car testing which has led to a design that is less restrictive, yielding both torque and power gains well over many of the competitors.

Ultra Series Intake Manifolds are made from high-grade 356 aluminum alloy for a strong and lightweight design, CNC-machined for a precise fit, and individually inspected for quality assurance. The large 90mm throttle body opening, 87mm velocity stacks, and hi-velocity intake runners with smooth transitions allow the Ultra Series Manifold to outflow the competition. Designed to be used with built, high-horsepower naturally aspirated or forced induction setups, the Skunk2 Ultra Series Intake Manifold helps provide a new level affordable high-end intake technology to the marketplace.

  • Ideal for turbocharged and naturally aspirated race engine build applications
  • 3.5L = high horsepower N/A & Forced Induction engine build applications up to 600hp
  • Skunk2 Ultra Series 90mm billet throttle body available separately


  • 3.5L configuration
    optional 4.5L & 5.5L spacers available separately 
  • Mounts to PRB style Honda K-series cylinder head
  • Billet aluminum 1L silver spacer
  • Hi-Grade Mounting Hardware 
  • 6.00” Tapered Hi-Velocity Runners Curved for Hood Clearance
  • Raised 90mm Velocity Stacks - Plenty of Material to Port
  • Provisions for Additional Injectors on Bottom Side of Runners
  • 90mm Throttle Body Flange - Std. 5.0L Ford Pattern
  • 3 x 1/8” NPT, 3 x 1/4” NPT Fittings, 2 x 1/8” Hex Socket Plugs, 2 x 1/4” Hex Socket Plugs
  • Includes Thermal Manifold Flange Gasket
  • Generously Cast Runner Walls for Porting
  • US Patent #

    Vehicle Applications

    The Ultra Series K-series intake manifold is race application and is NOT a direct fit for the 02-05 Civic Si or 02-06 RSX vehicles (both use PRB style heads). However, Skunk2 tells us the manifold will fit the following K20 or K24 swapped vehicles (using a PRB style head) along with the either of the following components:


    • Karcepts or  K-Tuned A/C & P/S Eliminator Kit (KP-UNV-385)
    • Electric water pump w/water block off plate (K-tuned kit# KWP-PKFJ-204)

      Will then fit these tested K-swapped vehicles:
    • 92-95 Civic
    • 96-00 Civic
    • 94-01 Integra


    We realize that returns and exchanges are a part of the purchasing process and we do our best to make it as easy as possible. If you are not 100% satisfied with your purchase, you can return your order to JHPUSA within 14 DAYS from the invoice date.

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