Door lock tailpiece (lever, door lock operating)

[RICH MUISE]

copied from a post by Cokefirst, thanks. 7/23/2018

I hope this information helps.  There are actually 4 different door lock tail pieces or as Ford calls them, Lever - Door lock operating.  The 1955-1957 Thunderbird uses Part number B5S 4021971-A for both sides.  This is the only application in these years that does not have a left and a right.

For 1957 and 1958, model 51A (Skyliner), 63A (Fairlane 500 Club Victoria) 63B (Fairlane Club Victoria) 64A (Fairlane Club Sedan) 64B (Fairlane 500 Club Sedan) 76B (Fairlane 500 Convertible Coupe) All these use part number B7A 6421970-A for the right and B7A 6421971-A for the left.

For 1957 and 1958, models 57A (Fairlane 500 Town Victoria) 57B (Fairlane Town Victoria) 58A (Fairlane Town Sedan) 58B (Fairlane 500 Town Sedan) 59A (Tudor Ranch Wagon) 59B (Tudor Ranch Wagon Del Rio) 66A and 66B (Ranchero) 70A (1957 Custom Tudor Sedan) 70A (1958 Custom 300 Tudor Sedan) 70B (Custom 300 Tudor Sedan) 70D (1957 Custom Business Tudor) 70D (1958 Custom 300 Business Tudor) 73A (1957 Custom Fordor Sedan) 73A (1958 Custom 300 Fordor Sedan) 73B (Custom 300 Fordor Sedan) 78A (Sedan Delivery) 79D (Station Wagon Country Sedan 6 passenger) All these use part number B7A 7021970-A for the right and B7A 7021971-A for the left.

For the following model ONLY for 1957 and 1958, 79E (Station Wagon Country Squire 9 passenger) this model uses part number B7A 7921970-A for the right and B7A 7921971-A for the left.

In 1959, they went back to one part for both left and right for all passenger car models excluding Thunderbird.  I hope this information helps.