![]() ![]() B6A-5560-A (this number superseded the original '54 part number) Also, for the '55-'56 Ford passenger car and Police Interceptor cars, a 6 leaf heavy duty spring was used, part no. For the '54-'56 Ford passenger car, a 5 leaf spring was supplied part no. The 4 leaf springs on the early '56s weren't stout enough, so they moved to the 5 leaf spring for later '56 and all of '57. Going deeper on this, the '55 'Bird used a different length leaf spring than the '56 and '57. 42-211 - Rear leaf springs, Fits 1956, 57, Thunderbird, Replaces B7X5560a. ![]() The part numbers assigned to the leaf springs for the three years of 'Birds were B5S 5560-D for the 5 leaf spring for the '55 'Bird B6S 5560-B for the 4 leaf spring used on the early production '56 'Bird B7S 5560-A for the 5 leaf spring used on the later production '56 and all '57 'Birds The 'S' in the part number prefix signifies that there is something unique about those leaf spring numbers that means they were a Thunderbird specific part. Examples of this would be different part numbers for Police Interceptor, convertible, or Victoria model cars. Thunderbird Year 1956 1 I am considering purchasing new leaf springs for my 56. Sometimes they also specified differences in the parts used for certain models not because of component dimensional differences, but because of other factors related to a model's weight or anticipated use. I noticed that with the 62 they installed 5 springs. That said, FoMoCo often found it necessary to have unique parts for different body styles like passenger cars, station wagons/ sedan deliveries, and Thunderbirds. 1956 1 Suspect I will soon be replacing the leaf springs ( look OEM) in my recently acquired 61 convertible. 42-211-package - Includes: Rear leaf springs, front eye bushings, shackle assys. ALLOW 5-6 WEEKS LEAD TIME, CUSTOM MADE PER ORDER NO CANCELLATIONS, RETURNS, OR REFUNDS. Two reasons, to speed-up product development for the 'Bird and to reduce production costs particularly for a vehicle that would not be sold in the quantities of their other models. 42-211 - Rear leaf springs, Fits 1956, 57, Ford Thunderbird, T-bird, Replaces OEM B7X5560a, 2' X 5 leaves, front bushing incl. This was particularly true of mechanical parts. On top of low prices, Advance Auto Parts offers 1 different trusted brands of Leaf Spring Bushing products for the 1957 Ford Thunderbird. Ford 'shared' as many components as possible in engineering the '55-'57 T-birds as well as other models. 1956-1957 Ford Thunderbird - Leaf Spring (Rear - 5 Leaves) Options Required Bushings Add (2) HB-860 Bushings ( +11. Our Hydraulic XHD Shocks spread the load over roughly 50 more piston area than a HD shock which provides superior stability and control with a softer, smoother ride than gas shocks.
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