VR4 Alternator Belt

4GTuner

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so the 4 stands for 4 ribs, and the 990 stands for the length.
try it and see, if it too long get a 4pk950 or 900 if too short go the other way.
i have had funny lengths that i have had to cut 1 rib off the side as i wasnt prepared to wait for the correct one.
i think the subby with underdrive pulleys was running a 4pk instead of the 5pk as i couldnt get the required length.

if i really unsure, get a piece of speaker wire to wrap around the pulleys, mark the required length. take it too repco and measure it with their fan belt measurer and go from there
 
just to show you the gen belt is a 995 ( MD187458 ) $44.00 , and option belt $16.75 VS000083 ( 4PK0990 )
 

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