ARP 134-3610 - LS 2nd Design Head Bolts 2004-13

Premium 8740 Grade Chrome Moly Material 6-Point Head Bolt Kit. Fits 2004 and later GEN 3 and GEN 4 LS engines, also known as the "2nd Design" head bolt. Can also be used with the LSX block when using the stock style replacement cylinder heads without the extra head bolt bosses. Does NOT fit the LS9 Supercharged ZR1 engines. Uses 10mm hex and 13mm hex sockets.