1Fitment: Replacement for Chevy Cab Chassis 96?2006 Aft Plastic Tank; Replacement for Aurora 1995?2003; Replacement for Lesabre 2000?2005; Replacement for Park Ave 1995?2005. 2Fixes Rusty Latches: This replacement gas tank lock ring repair kit fixes a stuck tongue problem due to rusty fuel pumps, so they can be used properly. 3High Performance: This replacement locking ring fits the fuel pump and ensures that it is securely fastened and will not come loose or wobble. 4No Tank Disassembly Required: Unlike other methods of fixing fuel pumps, the use of this locking ring does not require the removal of the entire fuel tank, saving time and labor. 5Access Through The Main Trunk: The replacement locking ring allows access to the fuel pump through the main trunk, making it easier to install and repair.