Hello All, We are now offering pre-made Gen-3 and 4 Oil Cooler Lines, as anyone who has a Gen-3 or 4 with a few miles on it surely knows how annoying the factory lines can be as they slowly seep oil all over the place... and that's a best case scenario. We have seen more than one that decided to disconnect itself or fail catastrophically, and cost the owner an engine. These lines are full-swivel, and use 1-piece hose ends that do not require ORB-to-JIC adapters. These fittings do not flex and break, come loose, or wear out from engine torquing. While these types of hose ends are not cheap, they are the best we have used. We try to use them exclusively on our builds, for both oil and fuel lines wherever possible. The lines are all Aeroquip Stainless Steel Braided- no off brands or knock-offs are ever used here. The braided hoses are fitted with a black nylon abrasion sleeve so that they do not damage surrounding parts and finishes. All lines are "black" with red anodized hose ends. Simply remove the original lines and quick-connect fittings, and screw these in place, no adapters needed. Put aside any worries of leakage or failure, these lines are rated at over 1000 PSI, and a constant working temperature range of -45 to +300F without any degradation. $295.00 per set.