This SKF Engine Crankshaft Repair Sleeve, part number 99387, is an essential component for your engine repairs. With a warranty of 1 year, this repair sleeve is designed to fit shafts measuring from 3.873-3.879 inches and is compatible with OE/OEM part numbers 12328974, 930099387, 975999387, CHR99387, CR99387, and 145899387. This package includes two sleeves to ensure that you have a spare on hand for future repairs. The CR Seals (SKF) 99387 Shaft Repair Sleeve is a must-have for any car or truck owner who wants to keep their engine running smoothly.