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420A Belt Sizes for MPX UDP

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At this point in time, nobody has the belt sizes listed for the Modern Performance underdrive pulley. So after trial and error I found the proper belt sizes for my application and have them listed below. The alternator belt size will be the same for ALL applications. The following part numbers are for Dayco products.

Alternator: 5040313 (31.3 inches diameter)

P/S (no A/C): 5040375 (37.5 inches diameter)
 
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