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Discussion Starter #1 (Edited)
Bosch HPFP's for BMW 760i...

Other than the shape of the nipple on top, these appear identical. Anyone know if this is this the only difference?

I believe the -042 is used on Rolls Royce and -021 on BMW but I often see them advertised as interchangeable.
 

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Discussion Starter #2
Looks like BMW changed some things on the N73 in 09/2006 and that included this change to HPFPs. The only physical difference is the nipple on top.
 
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