1 1/8 inch dia outer thread, 12 TPI. Center thru hole = 3/8" pipe thread, Material = ASA plastic that is oil resistant. Perfectly smooth running threads. O-ring gasket included. This is for one part only. 3/8 inch pipe nipple is not included. It is best to confirm your thread size by measuring the OD of the thread.
Lycoming Thunderbolt or 390 Oil Cap Dehydrator Connection
$44.00Price