Initially, I just purchased online, but ordered the wrong part. I called and talked to a real person, who helped me order the correct part and offered a reasonably priced return shipping label. That was a welcome change from other recent online purchase interactions.
Single Stage Air Compressors
10-Gallon Wheelbarrow Air Compressor 12.5 CFM No Gas Engine JCB-6508G (6538T)
Unbranded/Generic
$749.95
