Hayden 5938 Accessory Drive Belt Idler Pulley

Hayden 5938 Accessory Drive Belt Idler Pulley

The Hayden 5938 is a steel accessory drive belt idler pulley built for smooth belt routing and stable operation in the accessory drive belt system. It is a black, smooth-style idler/tensioner pulley with a 2.20-inch outside diameter and a 1.1875-inch belt width, made to meet or exceed OEM requirements.

Compatible With Lexus applications including IS300, IS500, LC500, LC500h, RC F, RC300, NX300, GS F, GS300, GS200t, IS200t, LS460, NX200t, RC200t, IS F, and GS460, this pulley supports a wide range of Lexus belt-drive service needs. The Hayden Pulley line focuses on direct-fit replacement components for accessory drive systems, and part number 5938 is one of the cataloged OE-style replacements in that line.

Key Features

• Steel pulley construction for durability in belt-drive service
• Smooth pulley surface with back idler belt type
• Black finish
• 2.20-inch outside diameter
• 1.1875-inch belt width / 30 mm pulley width
• 0.472-inch bore diameter
• Single mounting hole design
• Meets or exceeds OEM specifications

Detailed Description

Hayden 5938 is an accessory drive belt idler pulley intended for vehicles that use a back idler or idler/tensioner pulley in the belt path. The steel construction and smooth groove-free design help maintain consistent belt tracking where the accessory drive system requires a non-grooved pulley. This part number 5938 is listed across multiple Lexus platforms, including 2018-2025 Lexus IS300, 2022-2025 Lexus IS500, 2018-2025 Lexus LC500, and 2015-2025 Lexus RC F, along with additional Lexus GS, LS, NX, and RC applications.

This part cross-references Dayco 89537 and Gates 36319 for the same application.

What It Helps Address

• Noise from a worn or rough idler pulley bearing
• Belt tracking issues caused by pulley wear
• Accessory drive vibration from pulley surface damage
• Improper belt routing performance in the drive system
• Service replacement for a damaged or seized pulley

Installation Notes and Tips

• Verify pulley dimensions, including 2.20-inch outside diameter and 0.472-inch bore, before installation
• Confirm the vehicle uses a smooth back idler pulley in the accessory drive belt system
• Mounting hardware is not included
• Inspect the belt, tensioner, and adjacent pulleys during service
• Use the vehicle-specific fitment list to confirm the exact Lexus application

Quality Assurance

Hayden lists this pulley as meeting or exceeding OEM requirements, making part number 5938 a direct replacement option for service work on supported Lexus belt-drive applications.