Each fuel vapor canister is designed and tested to OE specifications for a direct-fit replacement, controlling the loss of evaporative emissions from fuel systems to the environment. Every fuel vapor canister includes an integrated check valve with an operating pressure calculated according to your vehicle's specific needs. Each fuel vapor canister is built for pressurized fuel systems to sustain creep loads. All of our fuel vapor canisters come in various sizes for different fuel systems and are manufactured with the highest grade materials ensure precision performance.