This zinc - plated spindle bolt, part number KR1025, is designed to fit GMC 2500 & 3500 HD models from 2011 to 2025 with a 6.6L Duramax engine. These bolts attach the wheel bearing to the spindle and need 133 ft - lbs of torque during installation. They are zinc - plated to prevent oxidation as they're prone to wear and rust. We highly recommend replacing them when changing your wheel bearings for easy access. Vehicles with aluminum steering knuckles come with hardened steel washers that must be reinstalled for accurate tightening. Each bolt is sold individually, and there are 4 per side on your truck. Enjoy the Kryptonite No Fine Print Lifetime Warranty (excluding Heim Joints) when purchased from an authorized dealer and registered within 90 days of purchase.

Using this spindle bolt is straightforward. First, make sure your vehicle is a 2011 - 2025 GMC 2500 & 3500 HD with a 6.6L Duramax engine. When installing, apply 133 ft - lbs of torque. If your vehicle has aluminum steering knuckles, don't forget to reinstall the hardened steel washers; otherwise, the tightening measurement might be off. Since these bolts are prone to wear and rust, it's a good idea to replace them when you change your wheel bearings. Keep in mind that they are sold individually, and you'll need 4 per side of your truck. The bolts come with a great Kryptonite No Fine Print Lifetime Warranty, but you must buy them from an authorized dealer and register the warranty within 90 days of purchase. This warranty doesn't cover Heim Joints. With proper installation and care, these zinc - plated bolts will serve you well for a long time.