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Discussion Starter #1
Hello,

Does anyone know the replacement alternator and or power steering pump belt sizes/part numbers, when an Auto Specialties Performance "underdrive crankshaft pulley" part# ASP900800 is used?

Sorry,

For use on a 1990 Plymouth Sundance 2.5 non-turbo.
 

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Discussion Starter #2
Hello again,

The folks at Auto Specialties Performance were helpful in getting the part numbers for the replacement belts. They sent me to Mike @ FORWARD MOTION INC., who quickly replied with the following replacement Gates part numbers for the alternator and power steering pulley belts for an 89-91, 2.2 and 2.5 liter I-4 engines:

Gates numbers are K040340 (alternator) and 7395 (power steering).
 

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Discussion Starter #3
Installed pulley yesterday, I won't say I think that it added 10 horse power (10%) but it certainly made a difference; I don't have any updated fuel economy numbers yet.

One thing that is very different, perhaps this only happens on auto transmissions, the shifts are much smoother. I never expected that!

Additionally, I am very happy to report that the belt sizes provided by Forward Motion Inc., were spot on!!!
 
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