12AN oil drain adaptor to suit Holset T25 TurboOur oil drain adaptor is specifically designed for the Holset T25 frame to work around the compressor housing allowing a 12AN fitting to be used. Supplied with a viton o-ring and fasteners. Bolt hole spacing 38mm centres, with M6 bolts. Allows 12AN fittings to be used on the drain tube on the HE221 turbo.   CNC machined from billet 6061-T6 aluminium at our factory in Napier, New Zealand, and anodised black for great looks and corrosion resistance.