The K&N 57i induction kit for VW Golf 1.9TDI/230TDI swaps the factory air box for an oversized washable, reusable filter and vehicle-specific adapters to improve airflow and sustain power delivery across the rev range. The larger element captures more dirt for longer service between cleanings. K&N's No-Hassle Lifetime Limited Warranty applies; some states restrict these kits for emissions reasons.
K&N Performance Intake Kit VW GOLF 1.9TDI/230TDI