These are machined to fit the stock oil cooler line location on the oil filter housing. Each kit includes two fittings, machined from aluminum and finished in black anodize, as well as viton orings and stainless steel hardware. These convert from the propritary mercedes lines to a standard -10AN fitting/line. We started making these for the OM606 applications and found out customers were buying them and cutting an ear off to make them work with the m113 v8s. They likely work on other models. If you have questions about fitment, please contact us and we will see if we can figure it out.