You are purchasing a four speed transmission mounting kit with adjusting strap used on 1936 to 1964 big twin Harleys.  As the bolt heads are CP-1035, with the exception of the adjuster and the frame to case bolt this would be correct for late 1942 to 1947 or 1948. 

We offer this with a mix of CP-1038 and CP-1035 for 1948 to 1957 and plain head for 1936 to late 1942.  We also offer the hardware and strap in a deluxe kit with the bottom plate for either 1936 to 1957 rigid or 1958 to 1964 Duo-Glide

The Parkerizing is perfect on these.  Buy with confidence, we are antique Harley enthusiasts, not a 100,000 item catalog emporium for various brands of motorcycles and car parts that we have no clue how they are used on your bike.  

Will fit all of the following but would be considered detail-correct for late 1942 to 1947:

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