Four Seasons 45095 Accessory Drive Belt Idler Pulley

Accessory Drive Belt Idler Pulley for Audi

Four Seasons 45095 is an accessory drive belt idler pulley built for serpentine belt systems that need stable belt routing and consistent pulley alignment. This metal idler pulley is sized for the specified OE-style application and is listed for select Audi A4, A4 Quattro, A5, A5 Quattro, and Q5 models.

The Four Seasons pulley line focuses on replacement components engineered and tested for dependable operation. Four Seasons 45095 follows that approach with a metal pulley design, one-groove construction, and dimensions matched to the application for a direct-fit service part.

Key Features

• Accessory drive belt idler pulley for serpentine belt systems
• Metal pulley construction
• One-groove design
• O.D. measures 3.56 in. (95.26 mm)
• I.D. measures 0.67 in. (17 mm)
• Pulley width measures 0.94 in. (25.4 mm)
• Belt width listed at 0.99 in.
• Mount hole quantity: 1
• Four Seasons part number 45095

Detailed Description

Four Seasons 45095 is an idler pulley for the accessory drive belt system, built for serpentine belt routing where a smooth, properly sized pulley is needed to maintain belt tracking. The metal construction supports consistent operation in the belt drive assembly, while the listed bore, width, and outside diameter help match the OE-style fitment requirements. This part cross-references Gates 38450 for the same application.

Compatible With select Audi applications including 2009-2012 Audi A4, 2009-2012 Audi A4 Quattro, 2010-2012 Audi A5, 2010-2012 Audi A5 Quattro, and 2011-2012 Audi Q5. Four Seasons 45095 is also listed for 2011-2012 Audi A4 and 2012 Audi A4 Quattro service applications.

What It Helps Address

• Noise from a worn or rough idler pulley
• Belt tracking issues in the serpentine drive system
• Visible pulley wear or surface damage
• Improper belt routing support at the accessory drive
• Service replacement for a damaged pulley in Audi belt drive assemblies

Installation Notes and Tips

Verify pulley diameter, bore size, belt width, and mounting style against the removed part before installation. Inspect the serpentine belt, tensioner, and adjacent pulleys for wear at the same time, since a worn belt drive component can shorten the life of the replacement pulley. Confirm application details for your specific Audi A4, A4 Quattro, A5, A5 Quattro, or Q5 before service.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation, backed by more than 50 years of mobile A/C experience. Four Seasons 45095 is built to support reliable service in the accessory drive belt system.