This is the insert used to attach oil filter to block at oil filter pad. The thread that goes into the block is 1-1/16" -12 and the thread for the oil filter is 3/4"-16 with an overall length of 1-7/32" long

Features

Thread (block side): 1 -1/16" -12
Thread Size (Filter side): 3/4"-16
Overall Length: 1-7/32"