This Beck Arnley 0621003 clutch release throwout bearing is a high-quality part for your 77-83 Mazda GLC 1.5L L4 clutch. It is made of durable steel material and designed for manual transmission. The vintage part has a lower placement on the vehicle and is not a universal fitment. The clutch release bearing is specifically designed for the Beck/Arnley brand and has interchange part numbers ST4063 and RCT336SA. It is not a performance part and is suitable for manual transmission only. This part is perfect for those who are looking for a replacement for their vintage car's clutch release bearing.