Part# VSB-WN-KBButn - Small Block Chrysler water neck Bolt Kit. This bolt kit will not rust like a chrome bolt can. This button head bolt kit is from our standard range of polished stainless steel bolts polished to our KustomBitz standard finish. These are the bolts that have the Allen Key hex type slot in a shallow dome, wide flange head that looks as neat as a button on a shirt. This custom water neck bolt kit will suit early small block Chryslers 273, 318, 340, 360 V8 engines. This bolt kit comes complete with 2 x water neck bolts, washers and spring washers, to bolt the water neck to a typical Valiant Chrysler inlet manifold.