Head Studs Set  M113 980 981 982 984 986 987 988 989 990 991 992 993 995
M113 940 941 942 943 944 948 960 961 962 963 964 965 966 967 968 969 971

Engine size 4.3 5.0 5.4

Head Studs Set M112 910 911 912 913 914 915 916 917 920 921 922 923
M112 940 941 942 943 944 945 946 947 949 951 953 954 955 960 961 970 972 973 975 976

Engine size 2.4 2.6 2.8 3.2 3.7

Head Studs set M113, M113k   20 Studs 20 rings  20 nuts     Set Price € 775,-   excl. shipping

Head Studs Set M112, M112k  16 Studs 16 rings 20 nuts   Set Price € 625,-  excl. shipping

According to producer stronger then APR 2000   i will get the tensile and yield strenght soon. Headstuds are tested by producer in high boosted engine’s running 3.0 bar boost pressure or 45psi pressure on the cylinderhead. The torqued the Heads to 130NM what is much more then need but just to test the headstuds.  But at these high torque value’s there is a big chance of damage the aluminium cylinder  more  then is needed to keep the boost pressure under the head.   So i’m installing these at first at 110NM and after a few heatcycle need to be checked and put back to the same 110NM  These torque value’s  are in the same range as ARP 2000 value’s with the same threads

good to mention is that these studs use +/- 7mm more thread in the block .  There is also room to run the thicker headgasket

Ask for availability  and delivery time