Skunk2 Pro Series Intake Manifold – Black Series | Race Only | 2006–2010 Honda Civic Si (K20Z3)

Maximize top-end power on your K20Z3-powered Civic Si with the Skunk2 Pro Series Intake Manifold in Black Series finish. Engineered as a significant step beyond the popular OEM RBC manifold, the Pro Series features a larger plenum, oversized runners with a special tapered design, and thicker cast-aluminum walls — all designed to improve airflow, enhance the venturi effect, and deliver meaningful mid-range and top-end power gains without sacrificing the mid-range performance that makes the K20Z3 so driveable.

Unlike manifolds with excessively short runners and oversized plenums that trade mid-range for peak power, Skunk2’s Pro Series was purpose-built for the street enthusiast who wants more power across the entire RPM range. The result is a direct bolt-on upgrade that outperforms the RBC in both mid-range and top-end output.

Key Features

• Larger Plenum & Oversized Tapered Runners: Increased plenum volume and larger-bore runners with a special tapered design accelerate and increase airflow for significant top-end gains while preserving mid-range power
• Thicker Cast-Aluminum Walls: Additional material leaves room for further porting on high-horsepower builds
• Angled Runner Design: Provides ample hood clearance on virtually any engine combination
• OEM & Aftermarket Throttle Body Compatible: Unique throttle body flange accepts OEM throttle bodies and aftermarket units up to 76mm
• Thermal-Insulated Intake Manifold Gasket Included: True bolt-on installation — no drilling or modification required
• Machined & Hand-Finished Runner Exits: Precision-matched to the K20Z3 cylinder head ports for optimal flow transition
• Direct-Fit Replacement: Bolt-in fitment for all 2006–2011 Civic Si K20Z3 engines
• Black Series Finish: Premium black anodized finish for a clean, aggressive engine bay appearance

Specifications

• Material: Cast Aluminum
• Finish: Black Series (Black Anodized)
• Throttle Body Compatibility: OEM and up to 76mm aftermarket
• Includes: Thermal-insulated intake manifold gasket
• Part Number: 307-05-0325
• Note: Race Only

Fitment

• 2006–2010 Honda Civic Si — K20Z3
• Compatible with all 2006–2011 Civic Si K20Z3 engines

Note: Race Only — not intended for street use or emissions-regulated applications. Verify throttle body compatibility and any required supporting modifications for your specific build before ordering. Professional installation recommended.