
The Gates belt-drive tensioner for 1999–2001 Sterling L-Line vehicles with the Detroit Diesel 6‑cylinder 12.7L engine provides a direct-fit replacement to restore proper belt tension for hub and alternator drives. This unit is intended to match the OE tensioner configuration for those model years, helping maintain belt alignment and reliable accessory operation on the listed Sterling applications.
Gates 99-01 Sterling L-Line Detroit Diesel 6-Cyl. 12.7L Diesel Hub & Alt. Belt Drive Tensioner