If you just look around on the Fastlane parts site you'll find what you need no problem. Alternatively, Phil knows. I like ordering from Phil because the parts always arrive the next day. The part # on my original unit and the used spare engatwork gave me is different from the one I got from Phil, the obvious difference between the two is the one I got from Phil doesn't have the cap on the top vent nipple. I suppose it doesn't matter, that cap is just there to prevent misc dirt and stuff from getting in there and blocking it because that's where the boost pressure vents out.

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'02 BMW 325i
'85 300D 450k
'93 190E 2.6 170k(killed by tree)
'08 Ducati Hypermotard 1100S 6k
'06 Ducati S2R800 14k(sold)