Smart FORFOUR Knock Sensor

Knock Sensor for Smart FORFOUR — what you need to know

Finding the right knock sensor for your Smart FORFOUR is essential for safe and reliable driving. We stock 10+ options from 10+ trusted brands, all with TecDoc-verified fitment for your specific vehicle.

When choosing knock sensor for your Smart FORFOUR, consider factors like OEM vs aftermarket quality, material specifications, and your driving conditions. OEM parts match original specifications exactly, while premium aftermarket brands like Bosch, TRW, and Febi Bilstein often offer comparable quality at lower prices.

All knock sensor listed on this page are confirmed compatible with Smart FORFOUR. Our fitment data is sourced from TecDoc, the industry-standard European automotive parts database. If you are unsure about compatibility, check the OE part number on your existing component and use our cross-reference search.