Monday, August 17, 2026

2008 Civic Si FA5 Window Sill Weatherstrip Install

This Brady Adventures Civic Si project refreshes the exterior window line with new window sill weatherstrip / belt molding. The goal is a cleaner factory-style finish without turning it into a complicated modification.

The video walks through the condition before the install, the weatherstrip and exterior trim work, and the final look on the car.

Vehicle

  • 2008 Honda Civic Si sedan
  • FA5 chassis

Parts and Tools

  • Front right/passenger window sill weatherstrip / belt molding: 72410-SNA-A01
  • Front left/driver window sill weatherstrip / belt molding: 72450-SNA-A01
  • Rear right/passenger window sill weatherstrip / belt molding: 72910-SNA-A01
  • Rear left/driver window sill weatherstrip / belt molding: 72950-SNA-A01
  • Trim tools or basic install tools: add only if useful

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What the Video Covers

  • Why the window sill trim/weatherstripping was worth refreshing
  • How the exterior trim and weatherstrip fitment comes together
  • Final exterior fitment and result
  • What to check before doing the same job on your own Civic

Question for Civic Owners

Are you replacing worn window sill weatherstripping on your Civic? Drop your year/trim and which door or side gave you the most trouble in the video comments.

Watch the full video on Brady Adventures: 


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2008 Civic Si FA5 Window Sill Weatherstrip Install

This Brady Adventures Civic Si project refreshes the exterior window line with new window sill weatherstrip / belt molding. The goal is a cl...