Mishimoto MMHOSE-CIV-06SIIHBK Black Induction Hose for 06-11 Honda Civic Si 2.0L

Vehicle Fitment

• 2006-2011 Honda Civic Si (2.0L I4, K20Z3 i-VTEC)

Fitment Notes

• Si trim only - designed around the K20Z3 2.0L engine and factory airbox; not applicable to DX/EX/LX Civic trims
• Installs using the factory airbox and throttle body connections; does not replace the airbox or filter
• Hose clamp inclusion was not confirmed by the manufacturer listing - inspect your factory clamps before installing, as some owners have needed replacements

Features

• 5-layer silicone construction for greater pressure and heat tolerance than the stock accordion hose
• Heat-resistant embedded reinforcing fibers between silicone layers for added durability
• Molded steel reinforcing rings to prevent hose collapse under vacuum
• Smoothed internal bore designed to improve airflow to the throttle body
• Direct-fit replacement for the factory airbox - no full intake system swap required
• Retains OEM-style routing and mounting points for a straightforward install
• Resists cracking, hardening, and heat degradation better than the factory rubber hose over time
• Backed by the Mishimoto Lifetime Warranty

Specifications

• Material: 5-layer silicone with embedded reinforcing fiber
• Reinforcement: Molded steel support rings
• Color/Finish: Black
• Designed For: Factory airbox-to-throttle body connection

Included Components

• 1x Mishimoto Silicone Induction Hose (Black)

Product Description

The factory intake hose on the 2006-2011 Honda Civic Si uses an accordion-style rubber design that works fine when new, but softens and becomes prone to collapsing or splitting as it ages - particularly under the heat and vacuum swings the K20Z3's VTEC engagement puts it through. The Mishimoto Silicone Induction Hose replaces that factory piece with a 5-layer silicone unit reinforced with embedded fiber and molded steel support rings, so it holds its shape and keeps airflow consistent even as the miles add up.

Because it's built to bolt directly onto the stock airbox and throttle body, this hose is meant to restore (and slightly improve, thanks to its smoothed internal bore) airflow to factory-spec levels without requiring a full aftermarket intake system. It's a good fit for Si owners who want to address a tired, cracking factory hose, or who are simply refreshing engine bay components with something more heat- and pressure-resistant than OEM rubber - all while keeping the stock airbox and factory-style routing intact.

Installation follows the same clamp points as the factory hose, so most owners can expect a straightforward swap. If your factory hose clamps show wear, it's worth having replacements on hand before starting, since older clamps don't always seat properly on a new hose.