For sale is a BRAND NEW AFTERMARKET ALTERNATOR FOR 1998-99 BLUE BIRD BUS L6, 12.7L, 12686CC, 774CID, DETROIT DIESEL SERIES 60, 200 AMP, 12V. OUR UNIT IS AN UPGRADED 200 AMP UNIT WITH A HIGH VOLUME INTERNAL COOLING FAN FOR IMPROVED PERFORMANCE. Please compare your original alternator (core) to our unit. Please note the mounting brackets and electrical terminals on the back of our unit (SEE OUR LAST PHOTO FOR LABELED ELECTRICAL TERMINALS). We are here to help and will respond in a timely manner. We never use generic photos in any of our listings. Please message us with any questions or concerns you may have regarding this alternator and its applications before purchasing the unit. We can provide more detailed photos and precise dimensions if required. Additionally, please keep in mind that it is possible that this same alternator fits additional vehicles not listed here. Again, please do not hesitate to ask us any questions. We will do our best to answer them as soon as possible. The alternator itself carries a. Against issues with craftsmanship or components. Additional expenses such as labor, towing, etc. As with all alternators, please make sure to install this unit into a vehicle that has a fully charged, load tested battery, as well as clean and tight electrical cables, terminals, grounds, and pigtail alternator harness. We have been in business for over 35 years and are known for our honesty, quality, and excellent customer service.