Our Performance 12 point bolt kits are a nice looking option that features grade 8 strength, black oxide coating, and with a price that doesn't break the bank. This kit includes the two bolts and washers used to attach the thermostat housing (also called the water neck) to the water pump housing. These can also be used with either our billet aluminum or chrome steel fuel pump block-off plates. Custom matching, small diameter washers are also included with this kit.