Brass Nut. 3/8" UNC. Manifold & Down-pipe (Sold as a Set of 4) 108951-SetA

Manifold & Down-pipe Brass Nut. 3/8" UNC.  (Sold as a Set of 4)  108951-SetA

BRASS MANIFOLD NUTS  3/8" UNC.  (Sold as a Set of Four) 108951

We sell these UNC Thread Nuts as a set of Four. If you require more please ask.

Brass nuts on the manifold head pipes minimizes the possibility that the head pipe nut (s) will come loose. The brass nuts expand/contract at a different rate than steel, therefore they are more stable. Regular brass exhaust nuts are thicker than steel, by approximately 1/8", therefore they get a better purchase on the stud.  13mm hex
Good brass exhaust nuts are very hard to find.

It is OK to use Steel washers with the Brass Manifold Nuts