ITEM NAME:Oil Bypass Valve Delete Plug for GM Gen 3 4 LS1 LS2 LS3 LS6 5.3 LQ9 LQ4 L96 LY6 Product Description Description: For GM Gen 3 4 Oil Bypass Check Valve Delete Plug LS1 LS2 LS3 LS6 5.3 LQ9 LQ4 L96 LY6 Engine Descriptions: Billet Bypass Delete Plug This Bypass Delete will help keep unfiltered oil out of your engine by plugging off the oil bypass check valve. The factory bypass check valve can let unfiltered oil into your engines bearings and lifters. Our Billet Bypass Delete replaces the factory check valve preventing unfiltered oil from getting into the engine. The factory bypass check valve is a safety in case the oil filter never gets changed and the filter gets restricted. Most oil filters already have a bypass built into them for this reason. The factory check valve can open with oil pressure surges, letting unfiltered oil by and into the bearings. Why would you ever let unfiltered oil into your expensive LS engine? Install one of our Bypass Deletes the next time you change your oil filter. A 1/4-20 threaded hole in the end of our Bypass delete is for easy removal. Just screw a 1/4-20 bolt in and pull the delete out if ever necessary. Better engine protection from less particles bypassing, replaceable High Temperature O ring and for ease of service a threaded 1/4-20 hole. NOTE: Make sure your Bypass valve is located in the filter adapter housing like in the picture BEFORE ORDERING! Some are located inside the oil pan, this product will not work if your delete is inside the oil pan. To keep even more unfiltered oil from going through the system check out our Precision Billet Barbell Oil Diverter. Not only does it keep unfiltered oil out, it improves oil flow. Copy and paste this into the search -  LS Billet Aluminum Oil Diverter Galley Plug Barbell LS1 LS2 LS3 L92 LQ4 LQ9 5.3 Fits for GM Gen III & IV LS Engines LS1-2-3-6-LQ4-LQ9-4.8L-5.3L-6.0L-6.2L & More! Specifications:.To keep even more unfiltered oil from going through the system check out our Precision Billet Barbell Oil Diverter. Not only does it keep unfiltered oil out, it improves oil flow. Copy and paste this into the search - LS Billet Aluminum Oil Diverter Galley Plug Barbell LS1 LS2 LS3 L92 LQ4 LQ9 5.3.