2 Titanium 5/16 unf 4 1/4 inch bolts
Fits a 7/16 AF spanner
This is a pair of big bolts with spring washers that are used between the gearbox and the radiator bracket.
Although hidden deep in the engine bay they're quite easy to change after removing the front grille.They will never tarnish, have stronger threads and are much lighter.
Standard steel weight bolt = 44.2 grammes
Titanium bolt weight = 24.1 grammes
Total weight saving = 40.2 grammes
Click on image below to see location of bolts


