Part# 568-349 Fits: 2011–2019 Chevy/GMC 2500HD / 3500HD IMPORTANT FITMENT DETAILS: Direct replacement for OEM GM inner spindle O-ring Designed specifically for GM HD trucks Recommended for replacement during wheel bearing service FEATURES: Provides critical protection against internal corrosion Maintains a tight seal between the wheel bearing and axle Compatible with OEM and aftermarket wheel bearings Durable, high-quality rubber construction Lightly grease before installation for optimal seal DESCRIPTION: Protect Your Investment. The Kryptonite Inner Spindle O-Ring is a simple yet essential component for keeping your front-end components protected. Acting as a seal between the spindle and wheel bearing, this O-ring prevents moisture and debris from entering the hub assembly—reducing the risk of corrosion and premature failure. We recommend replacing this O-ring every time you replace your wheel bearings. It's a low-cost, high-value component that ensures the longevity of your suspension and drivetrain. INCLUDES: 1 x Kryptonite Inner Spindle O-Ring (Part# 568-349)