Carbon Fiber Box Pre Filter 4-1/8in Black

The OUTERWEARS Carbon Fiber Box Pre Filter 4-1/8in Black (Part No. 10-2535-01) is a precision air intake protection system designed to extend air filter life and improve engine breathing in high-performance and off-road applications. This rectangular pre-filter wraps around your vehicle's stock air box, intercepting dust, sand, and debris before they reach the primary filter element—a critical advantage in dusty operating environments where filter replacement intervals directly impact engine longevity and reliability.

Constructed from durable polyester material, the pre-filter measures 19 inches long, 13.75 inches in width, and 4.125 inches in height, with a low weight of just 0.12 lbs—meaning minimal impact on vehicle dynamics or fuel economy. The rectangular design mounts directly to the top of standard air boxes, and the black finish integrates cleanly with most engine bays while resisting fading. The 4-1/8-inch height specification ensures compatibility with typical compact and mid-size vehicle air intake configurations without modification to existing ducting or engine bay components.

This pre-filter is essential for owners operating vehicles in sandy, dusty, or high-debris environments—rally competition, desert driving, construction-site transport, or seasonal pollen-heavy regions. By absorbing the initial particle load, it reduces the filter-cleaning frequency and extends the service life of your primary air filter, ultimately lowering maintenance costs and reducing downtime. The OUTERWEARS branding on the box wrap signals genuine OEM-quality filtration engineering rather than aftermarket guesswork.