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					Originally Posted by  maple_leaf_eh
					 
				 
				My M151A2 alternator has a CAT Diesel exchange program sticker on it. 
			
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 That may be the result of your alternator coming off a US military truck like the M35A3 which used a cat engine, although I cannot say for sure if it used this alternator, although quite possible. The M900 series of trucks also used these alternators. 
These alternators were also used as a direct replacement and an upgrade for the M37, the M135, and the old gas 5 tons like the M62 if they needed the extra amperage. There was even an official modification to install them in the Canadian Ferret scout cars. I went one step further and installed them in any FV432s that I worked on or owned.