Sale Quick view Stage 8 Stage 8 8mm x 1.25 Header Nut kit - 4 Cylinder - T28 flange Turbo manifold nuts backing out on you, causing exhaust leaks?!Not anymore. Header:Stage 8 Locking Header Bolts easy to use and they are real assurance against horsepower loss or gasket... 143.25 145.97 Add to Cart