SUPERIOR SPECS & FUNCTION: Dynamically balanced and phased as a complete 2-piece assembly when applicable. Complete driveline is balanced to reduce noise and vibration while extending life. Included carrier bearing reduces cost eases assembly and provides a complete ready to install driveline. Greaseable u-joint allows maintenance of the drive shaft. Cold-rolled steel. Replaces OEM Numbers: All Balls Racing: PRP-PO-09-010 ENGINEER-TESTED EXCELLENCE: All of our wiring products go through a rigorous testing program developed by prestigious engineers to ensure optimal output and performance. MECHANICS CHOICE: Our key to success is selling parts that fit and perform like the originals, which is why beginner and professional mechanics make us their top choice. We offer electrical parts and motors for your car, electric lawn mower, truck, boat, PWC, motorcycle, ATV, tractor or virtually anything you ride or drive. HASSLE FREE GUARANTEE: 1-year warranty protects you after your purchase. We're confident that our products will work flawlessly once installed in your vehicle. In the rare case that it does not, we'll replace it anytime within one year of your order. If you have a problem, we will take every step to assist you, contact us for a replacement.