The mountune high-flow cotton gauze panel filter for the Mk4 Focus ST provides an instant improvement in both performance and induction noise and is easily installed in less than a minute.

Each mountune filter is manufactured using a multi-stage process resulting in a great fit and virtually no seepage of frame material into the filtration media producing the maximum available filter area.

Features:

• Increased performance
• Increased induction noise
• Pre-oiled
• Includes 'do not discard airbox sticker'
• Lifetime warranty against manufacturing defects

Note: Also compatible with Mk4 Focus ST-Line 1.5 turbo models.