Throttle body

[Jeffrey Warden]

I have a 91 325i sedan trying to order new throttle body through the dealer they say I need to know if it's AN or AL There is no marking on the throttle body how do I find out which one it is I need.the reason I'm replacing the throttle body is cuz I can't find a 90-degree that comes of the throttle body where there is the two 90° that hook up to the brake booster and the other one to the air intake hose from air cleaner to the throttle body. Your help would be greatly appreciated.

[RulyLSX]

I think you are in the wrong section? this one is for engine swaps... unless you are talking about throttle body from an LS?