Allstar Performance Head Sock — SFI 3.3 Single Layer Black | ALL923114 2000-buick-century-esi6896597 Includes dual high flow catalytic

Includes dual high flow catalytic converters which are less restrictive than the factory converters providing maximum flow

Vibrant Performance Oval and Round Pie Cuts allow you to make custom bends in your exhaust pipe setup

The unique air filter to housing interface (patent pending) allows for maximum filter size which increases the available air volume while simplifying the installation process

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Allstar Performance Head Sock — SFI 3.3 Single Layer Black | ALL923114 2000-buick-century-esi6896597 Includes dual high flow catalyticSingle eyeport head sock rated to SFI Specification 3. 3. Single layer construction made from a fire retardant cotton and aramid fiber blend. Black, one size fits all. Sold each. Spec Sheet: Allstar Spec Sheet (PDF) FAQ What SFI rating does this head sock meet? This head sock is rated to SFI Specification 3. 3. What material is the head sock made from? It is made from a fire retardant cotton and aramid fiber blend. How many eyeports does it have? This