Weatherguard 3551PK Vented Filler Cap for Liquid Transfer Tanks

Weatherguard

<h3>About Weather Guard</h3><p>Since its founding in the fall of 1960, <strong>Weather Guard</strong> has grown from a small workshop in Crystal Lake, Illinois into one of North America&apos;s most recognized names in truck and van storage equipment. What began with Howard Knaack building rugged jobsite tool boxes has evolved into a full-spectrum lineup of professional-grade storage and organization solutions trusted by tradespeople, contractors, and fleet operators across the country.</p><p>Today a WernerCo brand, Weather Guard carries forward that same commitment to craftsmanship and durability that defined its earliest products. The company&apos;s engineering philosophy centers on two priorities: protecting valuable tools and equipment from theft and the elements, and maximizing the productivity of the workers who depend on them every day.</p><h3>Truck Storage Built for Professionals</h3><p>Weather Guard&apos;s best-known product lines revolve around the work truck. Their <a href="/754-weatherguard-truck-tool-box-18353">truck tool boxes</a> are engineered with heavy-gauge aluminum and steel construction, weather-resistant seals, and reinforced locking mechanisms — designed to stand up to demanding job sites while keeping contents dry and secure. Complementing these boxes, Weather Guard offers a range of <a href="/18382-truck-tool-box-parts-bin-weatherguard-754">truck tool box parts bins</a> that turn a standard tool box into a highly organized workspace, giving workers fast access to fasteners, fittings, and small parts without digging through clutter.</p><p>For trucks that need even more structured storage, Weather Guard&apos;s <a href="/754-weatherguard-truck-bed-drawer-14546">truck bed drawer</a> systems bring a cabinet-shop level of organization directly into the bed of a pickup. These units allow workers to slide out dedicated storage compartments right at the tailgate — saving time, reducing fatigue, and keeping every tool in a consistent, known location.</p><h3>Van & Shop Organization</h3><p>Weather Guard&apos;s expertise extends well beyond pickup trucks. Their <a href="/754-weatherguard-van-storage-bulkhead-divider-18369">van storage bulkhead dividers</a> help fleet operators and independent tradespeople configure the cargo area of a work van for maximum efficiency and safety — separating the cab from the load area and creating a more professional, organized workspace. Whether outfitting a single service van or an entire fleet, Weather Guard&apos;s van solutions are built to the same rigorous standards as their truck products.</p><p>Even in the shop, Weather Guard delivers with <a href="/754-weatherguard-shop-tool-box-drawer-liner-18896">shop tool box drawer liners</a> that protect drawer surfaces and help keep hand tools organized, reducing wear and minimizing the time spent searching for the right implement.</p><h3>Why Weather Guard?</h3><ul style="list-style:disc"><li><strong>Decades of experience</strong> — over 60 years designing purpose-built storage for working professionals</li><li><strong>Superior weather resistance</strong> — sealed construction keeps tools dry in the harshest conditions</li><li><strong>Security-focused design</strong> — reinforced locks and durable materials resist break-ins</li><li><strong>Broad compatibility</strong> — fitments available for a wide range of truck makes, models, and bed configurations</li><li><strong>Professional-grade materials</strong> — heavy-gauge aluminum and steel construction built for daily use</li></ul><p>Whether you work in construction, utilities, landscaping, or any trade that puts a truck or van to work every day, Weather Guard offers the storage infrastructure to keep your operation running smoothly and your investment protected.</p>