Ken,
Here is a list of AN size
-4 .22 ID .44 OD
-6 .34 ID .55 OD
-8 .44 ID .65 OD
-10 .56 ID .80 OD
-12 .69 ID .94 OD
-16 .88 ID 1.15 OD
and others but I highly doubt it is that big
There isn't a -AQP fitting size that is just Aeroquip hose designation for
their stainless racing hose. The other option that it could be is BSP, many
oil coolers come with these fittings. Where did you get the cooler kit from?
If you purchased it from one of the big three it is probably a BSP kit, and
probably 1/2 BSP (don't call that 100% factual). The way to tell if it is a
AN or BSP is this
AN has an OD 37 deg chamfer and slight thread relief on the male end.
BSP has an ID chamfer of 50 degrees (i believe) and are threaded to the end.
hope that helps
Aaron
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