The oversized oil drain plug, made of stainless steel 304 with CNC cutting technology, have enough hardness and precision to re-thread the oil pan. Cost-effective solution, simple installation, eliminate the need to replace the entire pan, saving you time, labor and money. This oversized engine oil drain plug matches the fit and function of the original drain plug, and has undergone try-on testing to ensure a quality seal. Ideal replacement - There are several kinds of thread repair tools in the market like Heli-Coil, Time-Sert, or self-tapping bolt and drain plug repair kit. Using these tools to repair oil pan thread is risky and challenge, because you need to be very carefully to align the tap perpendicular to the oil pan before cut the new threads. Or it will leak oil. Using our oil drain plug to repair your slipped oil pan thread, just a few simple steps to get the job done. Package Include: 1pcs stainless steel self tapping oversize oil drain plug, specification: M16.1-1.5 x 15mm; 1pcs L Shape Hex Key Allen Wrench (for the drain plug); 2pcs fluorine o-ring for main plug; 2pcs red copper gasekt for drain plug; Installation Instructions: Step1. Make sure you clean the oil pan thread area thoroughly, there isn't excess oil around the area or in the threads. Step2. Thread the plug into the hole, a few threads forward and then a few back. Once the plug bottoms out, remove it slowly and then use some brake cleaner to clean loose thread material. Step3. Use T-socket wrench, tighten the plug with a torque of around 14ft-lbf.