Skunk2 Ultra Street Intake Manifold - L15B Raw Manifold

Ultra Series Manifolds ensure optimal intake performance for maximum horsepower gain versus traditional single piece intake manifolds. Our modular cast aluminum intake manifold can be easily disassembled for ease of porting, cleaning, and plenum volume changes via the use of our separately sold spacers. The expandable plenum gives the ability to perfectly curate intake air flow and volume for to maximize application potential.

Skunk2 Ultra Series Manifolds are the result of decades of research and development. Engineered using the latest in Computational Fluid Dynamics software and countless hours of dyno and real-world testing on race cars and street cars alike. Optimized plenum design evenly distributes airflow to all cylinders under dynamic load conditions.

Cast from high-grade 356 aluminum alloy due to its high strength, low weight properties and CNC machined for precision fitment. Thick-walled intake runners leave large allowances for porting to minimize chances of breakthrough and a larger 70mm throttle body opening offer maximum air flow.

• Fits stock Throttle Body and Skunk2 Pro Throttle Bodies (Coming Soon)
• * Tune required for optimal performance
• ** Optional Billet Aluminum Spacer Available in .5L Size Features:
• Modular 2-piece design w/ Removable Plenum
• Rotatable Plenum allows Driver-side or Passenger-side throttle body mounting
• Provisions for Secondary Fuel Injection
• Tapered High-Velocity Runners
• Generously Cast Runner Walls for Porting
• 74mm Throttle Body opening
• Lightweight 356 Aluminum Alloy Construction
• High Grade Mounting Hardware
• 4x 1/8-inch NPT and 3x 1/4-inch NPT Accessory Ports

Vehicle Fitment

• 2016-2021 Honda Civic

Please verify exact fitment for your trim and engine before ordering.

Manufacturer Part Number: 307-05-1000

Images are for illustrative purposes only. Actual product may vary.

Emissions Note: This product is not CARB approved and is not legal for sale or use on pollution-controlled motor vehicles in California, or in states that have adopted California emission standards. It is intended for off-road / racing use only. It is the responsibility of the installer/end-user to ensure compliance with all applicable federal, state and local emissions regulations.

⚠ WARNING (California Proposition 65): This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.