NOS GM Exhaust Couping 644133 1966-1968 Diesel Trucks Tilt cabs 4cyc

Description

This is a NOS GM Exhaust coupling part number 644133 in the original GM box Check out the pictures.
This is the coupling for the exhaust pipe to the exhaust manifold.
Shipping is .50
Fits the following:(The last picture shows the GM Book listing for fitment)
1966 Ser.50 (4cyc Diesel)(exc. Tilt)
1966 Ser.60 (4cyc Diesel)(exc. TDM)
1967 4cyc Diesel
1968 Tilt  (4cyc diesel)