ARP Head Stud & Nut Kit for Toyota Corolla Celica T Sport 2ZZGE ZZT231 TOYOTA 1.8L (1ZZFE) DOHC ARP2000 ARP Stehbolzen Kit Zylinderkopf FORD FLYWHEELS Toyota 1.8L 1ZZ Engine High Quality 4 Cylinder Assembly Genuine Toyota Flywheel Bolt Kit 8pcs (2JZ) "V160 V161 6 Speed". All Pro Series flywheel bolt kits feature an exclusive flat 12 point head design and a larger than stock underhead radius for increased strength. Each bolt is centerless ground to ensure the bearing surface is perpendicular to the threads creating equal load distribution and are nominally rated at 200,000 psi. Optimum design, enhanced reliability and increased strength are the main attributes of ARPs Pro Series flywheel bolt kits. Fits Toyota 1. 8L 2ZZGE 4 cylinder Socket Size(s) 5 8 12pt UHL 0. 875 Thread Size M10 x 1. 25