ARP LS Cam Camshaft Retainer Plate Bolt Kit 134-1002 4.8 5.3 5.7 6.0 LS1 LS2 LS3 LS6 L99 LS4 LS9 LSA LQ4 LM7. ARP 134-1002 High Performance Series Black Oxide M8 x 1.25 Thread 20mm UHL Camshaft Retainer Plate Bolt Kit with 10mm Socket for GM LS-Series V8.