Keep your Polaris Sportsman or Ranger running smoothly with this heavy-duty stainless steel crankshaft nut. Specifically engineered for 1997-2012 models in the 400-500 series, this replacement part delivers reliable performance and durability. The precision-machined stainless steel construction offers superior strength and corrosion resistance, making it ideal for both recreational riders and working vehicles. This nut is designed to maintain proper torque specifications, ensuring your engine's crankshaft stays securely in place during operation. A perfect fit for your Polaris ATV or UTV, this replacement part helps maintain the integrity of your engine's rotating assembly. Whether you're performing routine maintenance or rebuilding your engine, this crankshaft nut is an essential component for your vehicle's longevity.