Diesel Engine Compression Test Adapter - 8mm - 1.00 - Kubota

On the 1st cylinder, it pressurized to almost 500 PSI, and the check valve blew out. If it would have dislodged slightly more, I would be tearing a motor apart to retrieve the pieces. The only thing more disapointing than the part, is the customer service. So far, all I was promised after 2 phone calls, was an email from each, which I still have not recieved.