Smart Car Conversion Kits

Filters and maintenance parts for the Smart Fortwo 451 (2008–2015). Shop the Smart Fortwo engine air filter and the carbon cabin air filter, both matched to the 451.

Lifted or stock, a small car still needs regular service, and dirt roads are hard on filters. Keep your daily driver and your trail rig on schedule. Check each product page for exact fitment, and see our brakes and maintenance collection for the 451 brake service kit. Not sure what fits? Email hello@littlebig.supply.