Purpose and Specifications

MANN-FILTER WK 939/13 is a genuine fuel filter that separates dirt and water from the fuel, protecting the injection system and pump and keeping fuel delivery clean for smooth running and reliable starting.

Key specs include:

• Filter type: fuel filter (OE-matched)
• Reference: WK 939/13
• Brand: MANN-FILTER (OE quality)
• Precise OE dimensions and sealing for a direct, leak-free fit
• High-grade media for effective filtration and long service life

When to Use / Replace?

Replace this fuel filter at the interval in your service book, commonly every 30,000-60,000 km. A clogged filter reduces performance and can damage downstream components, so inspect it at every service.

FAQ

Q: How do I know MANN-FILTER WK 939/13 fits my car?
A: Match the reference WK 939/13 (or the OE number in your service book) to your exact model, engine and build year.

Q: How often should this filter be changed?
A: Replace it at the interval in your service book, commonly every 30,000-60,000 km.

Q: Is this a genuine MANN-FILTER part?
A: Yes - an original MANN-FILTER product built to OE specification for a precise fit.

Important: one filter reference can fit several models, and the same model may use different filters depending on engine and build year. Always verify fitment by the manufacturer reference or your vehicle's OE number before purchase - if in doubt, check against your owner manual.