The wheel hub assembly in your 2003 Pontiac Grand Prix has a very important job to do. It is a vital part of your car’s suspension, letting the wheels rotate with as little friction as possible, and it also helps support the weight of the vehicle. That means that it must be in as close to perfect condition as possible. When you consider that they are designed to last up to 150,000 miles, you have to admire the engineering that went into them. Not many parts are designed to last that long in your car. If your wheel hub assembly fails before then, it could be because of a leak in the seals, allowing the bearings to become contaminated with dirt and water as the grease leaks out. A common way that can occur is if you have been caught in water that comes up to your hubs. The rust contaminates the grease and makes replacing your wheel hub assembly a necessity. If it is time to replace your 2003 Grand Prix’s wheel hub assembly, we have the perfect one for you. No wheel hub assembly works better for your car than a Pontiac Timken wheel hub assembly. Customers should certainly get first-rate assistance when they buy dependable car parts. That's why we've created a 24/7/365 sales assistance call center to assist you with your requests. If you spot a lower price elsewhere, tell us - we will beat any price advertised elsewhere.