This brand-new axle shaft support bearing matches OEM numbers 1288231 and 1691743, a key chassis spare part for trucks. It offers reliable supporting force and ensures steady rotating performance of the axle shaft. Made of high-quality bearing steel with fine internal craftsmanship, it withstands heavy load, friction and harsh road conditions. With perfect OEM specifications, it is easy to install and serves as an ideal replacement for worn or damaged bearings.