Oil Inlet Fitting Adapter for Turbo or Engine M10 x 1.25 (10mm x 1.25) -4 AN 4AN Exceptionally high quality 304 Stainless Flange machined from billet and USA MADE! Screws right into the oil feed port on your turbo or engine which has M10 x 1.25 threads and comes with the copper crusher washer for high pressure oil seal. Connection at the top of the fitting: -4 AN Male Flare This allows you to screw any -4 AN oil feed line into the top of the turbo or the back of the engine. Another high quality part made for FABRICATION PROS. Includes USPS First Class Mail shipping (with a tracking number) for quick 1-2 day arrival to most US destinations. Order today and it will ship today.