IS25056 Flashark
IS25056 Flashark
IS25056 Flashark
IS25056 Flashark
IS25056 Flashark
IS25056 Flashark
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IS25056 FlasharkIS25056 FlasharkIS25056 FlasharkIS25056 FlasharkIS25056 FlasharkIS25056 Flashark
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High-Flow Aluminum Cold Air Intake for 2002-2005 Honda Civic Si (EM2)

SKU: FLIS25056

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Flashark Cold Air Intake for 2002–2005 Honda Civic Si EM2 — 76mm Aluminum, Dry Filter, No Tune Required

The K20A2 and K20A3 are the engines that made the Civic Si a real driver's car. 197 hp from a naturally aspirated 2.0L, a 7,400 RPM redline, and one of the best VTEC crossovers in Honda history. The factory airbox was engineered for emissions compliance, not for what the K-Series was built to do.

This Flashark 3.0" cold air intake replaces the restrictive factory plumbing with a mandrel-bent 6061-T6 aluminum tube and routes the inlet behind the inner fender liner — the coldest available air source in the EM2 engine bay. Intake temps run 15–25°F cooler than stock. The CNC-machined 76mm MAF housing is precision-bored to match factory K20 sensor calibration, so VTEC engagement stays sharp and consistent. No check engine light. No tune.

Installation is 90 minutes with a basic socket set. Every bracket and coupler is spec'd for the EM2 chassis.

Key Features

  • 3.0" mandrel-bent 6061-T6 aluminum tube — smooth interior, no step-downs; matched to K20A2/A3 throttle body diameter
  • 4.5" conical dry filter with integrated velocity stack — washable, reusable, no oil required; won't foul the MAF sensor; massive filter area for sustained high-RPM flow
  • Inner fender cold air routing — heat shield behind the inner liner pulls ambient air, not engine bay heat; 15–25°F cooler than stock
  • CNC-machined 3.0" MAF housing — precision-calibrated for K20A2 (2004–2005) and K20A3 (2002–2003); VTEC crossover clean, no CEL
  • No tune required — plug-and-play with factory ECU; fully compatible with Hondata / K-Pro if already tuned
  • Bolt-on installation — OEM-spec mounting points; 90 minutes, basic hand tools

Shop More Cold Air Intake Kits

Year Make Model Engine
2002 Honda Civic Si (EM2) 2.0L I4 (K20A3)
2003 Honda Civic Si (EM2) 2.0L I4 (K20A3)
2004 Honda Civic Si (EM2) 2.0L I4 (K20A2)
2005 Honda Civic Si (EM2) 2.0L I4 (K20A2)

Note: Does NOT fit 2001 Civic (D17), 2006–2011 Civic Si EP3/FG2 (different chassis), 2012–2015 Civic Si FB6 (K24Z7), or any Civic 1.7L/1.8L non-Si variant. K-swap compatibility (EG/EK/DC2/EP3) requires an adapter — not included.

Spec Detail
Brand Flashark
System Type Cold Air Intake (CAI)
Material 6061-T6 Aluminum (intake tube)
Tube Diameter 76mm (3.0")
Filter Type Dry, washable, reusable (no oil required)
Filter Size 4.5" conical with velocity stack
MAF Housing CNC-machined 76mm
Intake Temp Reduction 15–25°F vs. stock
Tune Required No — plug-and-play with factory K20 ECU
Install Time 90 minutes
Warranty 1 Year

Fast Shipping Policy

Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date. Click for Shipping Policy

Easy Return Policy

Every order comes with a 30-day free return, provided the item is brand new, uninstalled, and in its original packaging. We cover return shipping for quality issues. Refunds are processed within 3-5 business days. Click for Return Policy

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Add Worry-Free Delivery at checkout — if it's lost, stolen, or damaged, you're 100% covered. Click for Worry-Free Delivery Protection

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