Head Stud Kit, 12-Point Nuts AR202-4301 Product:fits Nissan RB20DE/DET 2.0L & RB25DE/DET 2.5L Male -3AN to M12 x

Male -3AN to M12 x 1

111-029-2M

The part numbers are AF49-3000 and AF49-4000

64-4377BLK

Head Stud Kit, 12-Point Nuts AR202-4301 Product:fits Nissan RB20DE/DET 2.0L & RB25DE/DET 2.5L Male -3AN to M12 xHead Stud Kit, 12 Point Nutsfits Nissan RB20DE DET 2. 0L & RB25DE DET 2. 5L AR202 4301 202 4301 It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP only uses premium grade 8740 alloy and a proprietary ARP2000 alloy that are rated far superior to "aircraft" quality