Uni Filter Fuel Tank Breather Filter
Uni Filter Fuel Tank Breather Filters: Proven Foam Filtration for Your Tank Vent
When it comes to protecting your fuel system from contaminants while allowing proper pressure equalization, few names carry more credibility than Uni Filter. Uni Filter entered the air filtration industry in 1969 with a simple concept: "Let's design an air filter that works!" That same philosophy drives their line of fuel tank breather filters — compact, high-performance venting solutions built on decades of foam filtration expertise.
What Makes Uni Filter Breather Filters Different?
Unlike disposable paper-based alternatives, Uni Filter's breather filters are engineered around their signature washable urethane foam technology. The filters are made of washable urethane material, require no oil or special cleaners, flow better than paper elements, and are unaffected by moisture or gasoline. That last point is particularly critical in a fuel tank breather application, where fuel vapor and condensation are constant realities.
An exclusive Ziptie Loop for mounting to the frame keeps hoses secure with no loose connections — a thoughtful detail that matters when routing vent lines on motorcycles, ATVs, and off-road vehicles where vibration and movement are constant.
The UP Series: Clamp-On and Push-In Options
Uni Filter's breather lineup — commonly referred to as the UP Series — is available in two distinct mounting styles to suit virtually any tank vent port configuration. Options include clamp-on styles in 1/2 in. (UP-103), 3/8 in. (UP-102), 5/16 in. (UP-101), and 5/8 in. (UP-104), as well as push-in styles in 1/2 in. (UP-123), 3/8 in. (UP-122), 5/16 in. (UP-121), and 5/8 in. (UP-124). This range of fitments makes it straightforward to find the right match for your specific tank vent hose diameter, whether you're on a dirt bike, ATV, or street machine.
Uni Filter push-in type breathers are used for venting crankcases and differentials as well as fuel tanks, reflecting the versatility of the design across the powersports world. Uni's breathers are made of a washable urethane which needs no oil or special cleaners, and laboratory tests proved that Uni Breather Filters are more efficient than paper elements.
Washable, Reusable, and Guaranteed for Life
One of the most compelling reasons enthusiasts choose Uni Filter breathers is their long-term value. The filters are completely washable and are guaranteed by the manufacturer against defects in material and workmanship as long as you own the vehicle. That lifetime guarantee against defects is a rare commitment in the accessories market and speaks directly to the confidence Uni Filter places in their foam filtration medium.
Uni Filter chose polyurethane foam as their air filtration medium — instead of paper or gauze — because of its superior dirt-capturing capabilities and its capacity to be easily cleaned and reused. In a breather filter context, this means the element traps airborne contaminants before they can enter the fuel tank, all while maintaining the unrestricted airflow necessary to prevent vacuum lock and keep fuel delivery smooth.
Trusted by Racers, Built for Every Rider
Uni Filter has been leading the way in powersport air filtration since 1971, producing filters that capture unmatched amounts of dirt yet can easily be cleaned and used again. Uni Filter products perform their best in the worst of conditions — that's why Uni has been the chosen filter brand of serious off-roaders for decades. Their fuel tank breather filters bring that same battle-tested approach to one of the most overlooked but important components in your fuel system.
Browse the full selection of Uni Filter fuel tank breather filters and find the right fit for your application.