OptiTorque Patriot Series Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - Mazda 4-Cylinder RFD.3R3431.A No need to remove wires

No need to remove wires and hoses Convenient hook & loop closure design Available is sizes ranging 0

Left Hinge

5" inlet diameter

Also fits 2007-2008 GM Silverado/Sierra 1500 with 4

Available in Carbon Fiber Finish

OptiTorque Patriot Series Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - Mazda 4-Cylinder RFD.3R3431.A No need to remove wiresProduct Description: Cylinder Head Stud Kit Patriot Series 12 Point Nuts Chromoly Black Oxide Mazda 4 Cylinder OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.