This is a 1 piece aluminum 4wd adapter housing used on T18 & T19 Ford trucks from 1975 & later that goes between the transmission & the NP208 transfer case.
 
There are 2 types with the only difference being the early one has USS/SAE threads & the later one has metric threads. Other than that they are the same & interchange. 1301-566-010, 1301-566-011 
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Specs   
  • 7 5/8" Long
  • 6 bolt flange on transfer case end
  • 4 bolt flange on trans side 
  • Condition: Used
    Seller Notes: “This is a 1 piece aluminum 4wd adapter housing used on T18 Ford trucks from 1975 & later that goes between the transmission & the NP208 transfer case.There are 2 types with the only difference being the early one has USS/SAE threads & the later one has metric threads. Other than that they are the same & interchange. 1301-566-010, 1301-566-011 ....Specs 7 5/8" Long 6 bolt flange on transfer case end 4 bolt flange on trans side”

T18 to NP208 Adapter Housing 1975 and later Ford trucks

$150.00Price