This GM LS slim line oil block adaptor allows you to plumb an external oil filter setup using the 2 x AN10 ports. This adaptor is to suit LS fabricated oil pans used for engine conversion applications where room is limited. CNC machined from AL6061-T6 with a polished anodised finish, it seals with 2 o-rings and includes 2 x AN10 straight fittings, bolts and washers.