B004HPXFG0 Trim Parts 1204 Full Size Door Handle Assembly (1956-1957 Chevrolet, 4-Door Hardtop, Front/Rear)

A door handle that fits and has the correct thickness makes a difference. No gaps or wobbles in mating to the door skin. These are the handles you have been looking for. Fits 4 door hard top.
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Officially Licensed GM Restoration Part
Correct Material and Finish
Trim Parts has been manufacturing high quality restoration products since 1973
Original GM part # 4156545