L6 4.2 liter (258) jeep 7/16 thread bolts 7 long 4.5 uhl 7 short 3.750 arp bolts with arp cylinder head washers please check thread sizes before ordering these do not have studs on top that may be needed for valve cover / accessory's for example casting numbers 89330000 we have found that in some cases model 4.2 may use the 1/2 thread bolts
torque is 70 foot pounds done in three steps 30 55 then 70 ft pounds with arp lube included in kit. Cylinder head washer goes inner chamfer side up
# 146-3603
more 258 head bolts