For Acura Integra 1.8L L4 B18A1 – 1990–1993. For Acura Integra 1.8L L4 B18B1 – 1994–2001. Connecting The Rod Bolt Material: Alloy Steel. Connecting Rod Bolt Head Style: 12-point. Motorcycle Connecting Rods & ARP2000 Bolts for Honda Acura K24 K24A1 K24A2 K24A4.