Installation Tips: Use an Axle Nut Socket to dismantle the axle nut. After dismantling the brake caliper, suspend it using a Caliper Hanger to avoid damage to the brake hose. A wheel hub removal tool can help dismantle a stubborn wheel hub assembly from the knuckle. During installation, use a Torque Wrench to tighten the axle nut to the manufacturer's specification. Do not use an impact wrench as it is easy to over tighten the axle nut. RELIABLE PERFORMANCE Precise roll-form design ensures consistent and optimal factory-installed preload to minimize excessive noise and wear. RIGOROUS TESTING Comprehensive testing throughout design and development processes by KAX engineers for quality you can count on CORROSION PROTECTION Coated wheel studs resist corrosion and rust for easier removal and proper torqueing. Package Included: 1x Catalytic Converter w/Installation Accessories NOTE: EPA Approved. For use WITH Federal Emissions models only. Not legal for sale, installation or use on vehicles registered in the state of California, New York,and Maine. Please enter your vehicle's year/make/model and then check the fitment.