The Sinister Diesel Pre-Filter Sock is a durable protective cover designed to fit over your cold air intake filter, helping block larger debris like dust, dirt, and bugs before they reach the main filter element. Built from rugged, breathable material, this pre-filter helps extend the life of your intake filter and maintain airflow in dusty or off-road conditions.

Easy to install and remove for cleaning, the pre-filter sock is an affordable upgrade for trucks and diesel applications where additional protection from road particles and harsh environments is needed. Keep your cold air intake cleaner and running longer with this simple yet effective accessory.