ARP Thread Chaser
 

Looking for the 912-0008 chaser from arp. i didnt use it on my other cummins, but this one is a pulling truck with s700 compound turbos so im gonna be pushing like 90 pounds. i just need it for a day. anyone got one that i can use and sent it back with some money in it for shipping? thanks for the help!

all it is is a standered 12mm tap available at any hardware store or auto parts story for around 5 bucks

Are you bottom tapping the threads or just cleaning them? A regular 12mm Bottom tap will work more than likely.

Thread chaser are built slightly smaller than taps. Using a tap will cut new threads each time it is used. True it won't be enough different to interfere with threading the bolt in and out but it does slightly weaken the thread area.