Nissan RB 1/2 inch head and OEM head dowels s15 the ID1050x is not a

the ID1050x is not a modified production component

2x 60mm Inlet Adapter Rings 4x O-rings

Airflow capacity is greatly increased over stock while going one step further when combined with Unitronic's Carbon Fiber Air Duct

It is highly recommended to fit an IAT sensor with this model

high temp Tefzel wire and crimp joins used with OEM connectors and glue lined heat-shrink * Genuine OEM Hitachi coils are rated to 2600 hp and come with a 1-year warranty

Nissan RB 1/2 inch head and OEM head dowels s15 the ID1050x is not a1 2 inch head dowels Anyone fitting half inch head studs to an RB (should be all rb25 and 30 blocks) They suit OEM replacement also. Need these! We have recently discovered that many people dont use dowels when converting to 1 2 inch head studs, they are absolutely crucial to stop the head from walking around and hurting your gasket seal! The reason you cant run an RB26 type M12 12 mm Stud in an RB20, 25, or 30 is because they are originally 11mm