Description:Idler gears (482-3545) can change the direction of rotation of the output shaft or can assist to reduce the size of the input or output gears while maintaining the spacing of the shafts.All Cat gears have unique metallurgy compositions tailored to specific applications, with special steel formulas that improve impact resistance and ensure uniformity and proper load transfer. Some Cat gears also undergo proprietary heat treat processes to improve surface, bore, and core hardness. The result is greater durability, which means longer life and better performance.Attributes:• Hardened steel idler gear• HCR Helical Gear Number of Teeth: 66 (Gear 1); 42 (Gear 2)• Helix Hand: Left• Pitch Diameter: 301.632 mm (11.88 in) (Gear 1); 191.947 mm (7.56 in) (Gear 2)• Inside Diameter: 133.261 mm (5.25 in)• Outside Diameter: 310.93 mm (12.24 in)• Width: 85 mm (3.35 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.