Pre-Filter

Pre-Filter: the cheap wrap that keeps dust and water out of your air filter

A pre-filter is the outer barrier that slips over or in front of your main air filter. Its job is simple: catch the big stuff - dust, mud, chaff, rain spray - before it loads up the filter media underneath. On a truck that sees dirt roads, a UTV in the dust, or a diesel towing through grit, a pre-filter keeps the primary element cleaner for longer, so airflow stays consistent and you clean or replace less often. Rain socks do the same for water intrusion on exposed cone and cover-style intakes. It bolts nothing critical, but it saves the filter you already paid for.

What ThreePiece stocks

This category holds 63 pre-filters, priced from $40 to $123 for what is currently in stock - a range, not a promise. Across those 63 you'll find 13 brands, led by aFe and Injen with 19 each, then Banks Power, Vance and Hines, Volant, K&N Engineering, Performance Machine, and single listings from Airaid, Spectre, Sinister Diesel, Uni Filter, S&S Cycle and Snow Performance.

Concrete examples: the aFe MagnumSHIELD for Ford Ecoboost Stage 2 at $67.72, the Volant universal round wrap and the oval PowerCore version in the low $70s, the Performance Machine C4 rain sock at $73.67, the S&S Cycle teardrop V-twin cover filter at $79.76, and the Snow Performance 100-micron -10 ORB inline pre-filter at $122.88 for water-methanol plumbing.

How to choose

Pick by what you're protecting. A cone or round filter under a hood wants a shaped wrap like the Volant universal pieces - match it to your filter's size and shape. An exposed cover-style intake on a V-twin wants a rain sock such as the Performance Machine C4. A model-specific wrap like the aFe Ford Ecoboost unit is cut to fit that intake and skips guesswork. If you run water-methanol, the Snow inline unit is a plumbed filter, not a wrap - a different animal entirely. The trade-off is coverage versus airflow: a heavier wrap blocks more debris but adds a small restriction, so match the density to how dirty your environment actually gets.

What else you need

A pre-filter only helps if the filter under it is good. Browse replacement filters, drop-in filters, panel filters and air filter elements to pair the right element. If you're building the whole intake side, see cold air intake kits and the rest of the Air Intakes section.

Fitment and ordering

Only 3 of these listings carry vehicle fitment data, covering makes including Ford and GM across model years 2009 to 2022 - the rest are universal wraps sized to a filter, not a vehicle. If you're unsure a wrap fits your cone or cover, call fitment help at 813-535-5801. All orders ship free, with Affirm and Katapult financing available.

Pre-Filter: the cheap wrap that keeps dust and water out of your air filter

A pre-filter is the outer barrier that slips over or in front of your main air filter. Its job is simple: catch the big stuff - dust, mud, chaff, rain spray - before it loads up the filter media underneath. On a truck that sees dirt roads, a UTV in the dust, or a diesel towing through grit, a pre-filter keeps the primary element cleaner for longer, so airflow stays consistent and you clean or replace less often. Rain socks do the same for water intrusion on exposed cone and cover-style intakes. It bolts nothing critical, but it saves the filter you already paid for.

What ThreePiece stocks

This category holds 63 pre-filters, priced from $40 to $123 for what is currently in stock - a range, not a promise. Across those 63 you'll find 13 brands, led by aFe and Injen with 19 each, then Banks Power, Vance and Hines, Volant, K&N Engineering, Performance Machine, and single listings from Airaid, Spectre, Sinister Diesel, Uni Filter, S&S Cycle and Snow Performance.

Concrete examples: the aFe MagnumSHIELD for Ford Ecoboost Stage 2 at $67.72, the Volant universal round wrap and the oval PowerCore version in the low $70s, the Performance Machine C4 rain sock at $73.67, the S&S Cycle teardrop V-twin cover filter at $79.76, and the Snow Performance 100-micron -10 ORB inline pre-filter at $122.88 for water-methanol plumbing.

How to choose

Pick by what you're protecting. A cone or round filter under a hood wants a shaped wrap like the Volant universal pieces - match it to your filter's size and shape. An exposed cover-style intake on a V-twin wants a rain sock such as the Performance Machine C4. A model-specific wrap like the aFe Ford Ecoboost unit is cut to fit that intake and skips guesswork. If you run water-methanol, the Snow inline unit is a plumbed filter, not a wrap - a different animal entirely. The trade-off is coverage versus airflow: a heavier wrap blocks more debris but adds a small restriction, so match the density to how dirty your environment actually gets.

What else you need

A pre-filter only helps if the filter under it is good. Browse replacement filters, drop-in filters, panel filters and air filter elements to pair the right element. If you're building the whole intake side, see cold air intake kits and the rest of the Air Intakes section.

Fitment and ordering

Only 3 of these listings carry vehicle fitment data, covering makes including Ford and GM across model years 2009 to 2022 - the rest are universal wraps sized to a filter, not a vehicle. If you're unsure a wrap fits your cone or cover, call fitment help at 813-535-5801. All orders ship free, with Affirm and Katapult financing available.