Trans/Air 711041 Backside Idler Pulley | 3" OD x 17mm Bore (Smooth) | Compatible replacement for Starcraft, Glaval & Elkhart Shuttle Buses | Heavy-Duty Steel Bearing | Replaces 1407908

Trans/Air 711041 Heavy-Duty Backside Idler Pulley Is your shuttle bus belt squealing? The Trans/Air 711041 is the heavy-duty idler pulley found on thousands of commercial bus A/C systems. Unlike standard automotive pulleys, this unit features a wider 31mm running surface to accommodate heavy-duty commercial belts. Why replace this pulley? The "Backside" idler pushes against the smooth side of your serpentine belt. Over time, the internal bearing dries out from engine heat, causing a high-pitched chirp or whine. If ignored, the bearing can seize, snapping your A/C belt and shutting down your cooling system. Technical Specifications:Part Number: 711041Outer Diameter (OD): 2.99" (76mm)Bore ID: 0.67" (17mm)Width: 1.21" (31mm)Surface: Smooth (Steel)Common Applications:Replaces Ford E-Series Cutaway Buses (E-350 / E-450)Replaces International / IC Chassis (DT466 / MaxxForce)Replaces Bus Bodies: Starcraft, Glaval, Krystal Koach, Startrans

• BUS A/C IDLER PULLEY: Genuine Trans/Air replacement backside idler (Part # 711041). Designed for heavy-duty shuttle bus air conditioning compressor mount kits (TM21 / QP21 systems).
• DIMENSIONS (METRIC & SAE): Outside Diameter: 3.00" (76mm). Inside Diameter (Bore): 0.67" (17mm). Width: 1.21" (31mm). Surface Type: Smooth / Flat (Backside).
• FITS SHUTTLE BUS FLEETS: Compatible replacement equipment on many Ford E-Series and F-650/750 chassis converted by Starcraft, Glaval, Elkhart Coach, Turtle Top, and Champion.
• HEAVY-DUTY BEARING: Features a double-sealed, high-speed bearing designed to withstand the high heat and tension of commercial serpentine belt drives. Prevents the "chirping" noise caused by cheap aftermarket pulleys.
• DIRECT REPLACEMENT: Replaces Trans/Air 711041 and 1407908. Similar to Dayco 89007 but with a wider 31mm running surface for improved belt stability on 8-rib and 10-rib drives.