Oil Pressure Senders

["Steve D'Gerolamo" <steved3@xxxxxxx>]

The oil pressure sender has been a source of oil leaks on BMW's for as long
as I've been selling parts.  The metal/nylon seam is where the leaks
generally occur.  Because these senders are so prone to failure, the
aftermarket is abundant with cheap replacements.  These parts cost the
distributor between $1.50-2.00 for the common "274" sender.  In fact,
unless you buy your parts through the dealer or someone who knows the
difference, you're likely to get an Italian Facet or some other lesser
quality replacement.  A lower quality part is more likely to start leaking
in the first 6 months and you may have problems getting the oil light to go
out.

To differentiate a good one from a poor one, look for a sender with a metal
hex portion of 24mm (not 21 or 22) and there should be at least 3 crimps
securing the metal to the nylon.  Also, the sealing washer should be a 2mm
thick copper part, not aluminum and not a thin copper seal.  SD
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Steve D'Gerolamo - The Ultimate Garage
201-262-0412 / steved3@domain.elided / http://www.ultimategarage.com

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