Exhaust

8X38mm. These exhaust manifold studs attach the header pipes to the cylinder head. Van Cafe recommendation:  If the studs on your motor are in good shape then leave them alone, but if they are stripped, corroded, or broken off then you will need...

These are copper exhaust locknuts that will not vibrate loose. Use these on all attachments that are through bolts on the exhaust system. It is best not to use these on the studs directly attached to the cylinder heads as they have more likelihood of...

Wave washers are used in conjunction with regular nuts, while flat washers are used in conjunction with the copper lock nuts. This washer is mainly used in the exhaust system when used with an M8 nut.  Also used to attach the thermostat housing.Ref...