KW / PETERBILT air connection found on the drier. Can also be found on the left frame rail near the left front tire.
KW / PETERBILT COUPLER
R134, VOLVO, air connection found on the hard line from the compressor
R134 COUPLER ALSO KNOW AS THE VOLVO COUPLER
Flat face fitting found on Internationals and on a lot of other trucks.
FLAT FACE OR COMPU CHECK COUPLER
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