The Earls Performance UltraPro One Way Check Valves are top-tier components that are compatible for use on fuel and oil systems. These check valves offer long-lasting and leak-free performance through a unique internal stainless steel hinge door and a GF-600S Viton sealing. The high-grade sealing features peroxide-curable polymer that ensures a leak-free sealing that works with all types of fuels. This includes oil, coolant, air, diesel, methanol, and ethanol.

The Earls Performance UltraPro One Way Check Valves integrate a proven military design that emphasizes a more compact build, compared to traditional flapper check valves. These check valves have an internal spring that releases to full flow at 1 psi and a maximum pressure rating of 1250 psi. Thanks to a refined anodized aluminum structure, these check valves are outstandingly durable and reliable in dealing with demanding applications. With the fine craftsmanship and long-lasting performance provided by an Earls Performance product, you can rest assured that you're getting the biggest bang for your buck.

Established in 1955, Earl's Performance is best known for their premium-quality aerospace-inspired plumbing components. The company began as a small retail outlet providing military aircraft surplus plumbing components to the racing industry. When the military surplus market dried up, Earl consistently reinvented itself to ensure that the racing market always had a go-to for aftermarket plumbing upgrades. Today, the brand is best known for its precision-engineered hoses, hose ends, fittings, adapters, brake lines, fuel system parts, cooling system parts, and many more.

As part of the prestigious Holley group, Earl's Performance remains an industry leader that sets the bar high when it comes to refined vehicle plumbing solutions. The company accommodates the needs of modern times by collaborating with various motorsport teams in the F1, F3, A1GP, Superleague Formula, FIA GT, Indy, Touring Car, Superbike, and many others. Whether you need supplies for a comprehensive vehicle plumbing project or just a single washer or bolt, Earl's broad selection of plumbing solutions guarantees the ideal purchase.