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Crank Pulley ID

Go to solution Solved by TobyB,

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Can anyone help me ID this crank pulley?  It was pulled from the engine of a 75 2002.  I'm not sure it it is for a car with AC, or if the extra groove is for a smog pump?  I did a bit of searching and didn't find a definitive answer.  I don't need it for my tii, so I'm selling it and want to know exactly what I'm selling. 







Karl B.

1974 2002tii Malaga ("Conrad") -->> Conrad's Restoration Blog

2003 330i ZHP 6-spd

2011 328i xDrive

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  • Solution

Well, you can measure the ID, of course...  whut, 24mm?  😛


There are a number of threads on this-


what you got there is one version of the A/C, air pump and water pump pulley.


There are several versions of THIS one, several A/C and water pump, several air pump and water pump,

and at least 3 of the water pump only version.


Yup, it's kinda like they made all sorts of options.  Just like BMW.


I DON'T think it's an E21 pulley, as those were 'usually' stamped steel...  



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"I learn best through painful, expensive experience, so I feel like I've gotten my money's worth." MattL

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Same as this one.  Diameter of some fan pulley sheaves vary.  TDC marks can be in different locations to suit the case pointer location.  The one shown is a case on a 9-71 02 engine where the pointer is at about 5 o'clock.  Keyway is up and in-line with cylinders when at TDC.

Engine Left Side.JPG

A radiator shop is a good place to take a leak.


I have no idea what I'm doing but I know I'm really good at it.

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