How to: Replace your Oil cooler adapter gasket & o-rings If your Oil cooler adapter is leaking like the one above don't worry its simple fix. Here are the item needed to replace the gaskets: Felpro gasket set # ES72671 De-greaser (optional) Scraper to remove old gasket 1/2 inch socket and ratchet Pick (if removing oil cooler lines) Flat head screwdriver Removal: Step 1: Clean and degrease the adapter and surrounding area. (Not always necessary, but I like a clean engine) Step 2: Drain the oil and remove the oil filter and drain for a few mins. Step 3: (This is step optional, I wanted to clean the oil filter adapter and replace the o-rings on the oil cooler lines) Carefully remove the plastic keepers and slide them back, then use a pick to pull the c-clamp off and pull the line out of the adapter. Step 4: Remove the 2 (1/2 inch) bolts holding the oil filter adapter on and separate the adapter from the engine Step 5: Remove the o-ring and scrap away the old gasket Installation: Step 1: Replace the o-rings inside the oil cooler line fittings on the adapter Step 2: Install the large o-ring and gasket (a little petroleum jelly will help the gasket stay in place) Step 2: Install the adapter with 2 (1/2 inch) bolts Step 3: Install the lines into the adapter. Step 4: Install a NEW oil filter & engine oil Finished! I hope this guide helped you fix your leak!