Hayden 5070 Accessory Drive Belt Idler Pulley - Upper

Hayden 5070 Accessory Drive Belt Idler Pulley

The Hayden 5070 is an accessory drive belt idler pulley built with a steel body and black finish for OE-style service on a wide range of Toyota and Lexus applications. This idler / tensioner pulley is a smooth back idler design that meets or exceeds OEM requirements and is used across many Toyota Camry, Highlander, Tacoma, and Lexus ES350 applications.

Key Features

• Steel construction for durable accessory drive belt support
• Black finish for a clean OE-style appearance
• Smooth pulley design for back-side belt routing
• Idler / tensioner pulley style for accessory drive belt systems
• 1.25 in pulley width, 2.76 in outside diameter, and 1.26 in inside diameter
• Single mount hole design; mounting hardware not included
• Meets or exceeds OEM specifications

Product Details

Hayden Pulley 5070 is an accessory drive belt idler pulley engineered for smooth belt tracking in the accessory drive belt system. The steel pulley body and smooth groove-free surface are suited for back idler use, while the 70.0 mm outside diameter and 31.8 mm width support proper belt alignment in the factory belt path. This part cross-references Dayco 89158 and Four Seasons 36173 for the same application. It is a direct-fit style replacement for many Toyota and Lexus vehicles, including Lexus ES350, Lexus RX350, Toyota Camry, Toyota Highlander, Toyota Sienna, and Toyota Tacoma applications.

Vehicle Fitment

• Fits 2007-2025 Lexus ES350, N/A
• Fits 2025 Lexus IS300, N/A
• Fits 2017-2025 Lexus IS350, N/A
• Fits 2006-2013 Lexus IS350, N/A
• Fits 2025 Lexus RC300, N/A
• Fits 2015-2025 Lexus RC350, N/A
• Fits 2016-2024 Lexus IS300, N/A, Smooth Pulley
• Fits 2016-2024 Lexus RC300, N/A, Smooth Pulley
• Fits 2005-2024 Toyota 4Runner, Upper
• Fits 2007-2024 Toyota Camry, N/A
• Fits 2007-2022 Lexus RX350, N/A
• Fits 2018-2022 Lexus RX350L, N/A
• Fits 2005-2022 Toyota Avalon, N/A
• Fits 2008-2022 Toyota Highlander, N/A
• Fits 2018-2021 Lexus NX300, N/A, Smooth Pulley
• Fits 2013-2020 Lexus GS350, N/A
• Fits 2007-2011 Lexus GS350, N/A
• Fits 2007-2020 Toyota Sienna, N/A
• Fits 2016-2017 Lexus GS200t, N/A, Smooth Pulley
• Fits 2016-2017 Lexus IS200t, N/A, Smooth Pulley
• Fits 2015-2017 Lexus NX200t, N/A, Smooth Pulley
• Fits 2016-2017 Lexus RC200t, N/A, Smooth Pulley
• Fits 2014-2016 Lexus IS350, N/A, Smooth Pulley
• Fits 2014-2015 Lexus IS250, N/A, Smooth Pulley
• Fits 2009-2015 Toyota Tacoma, Upper
• Fits 2009-2015 Toyota Venza, N/A
• Fits 2013-2014 Toyota FJ Cruiser, Upper
• Fits 2007-2011 Toyota FJ Cruiser, Upper
• Fits 2005-2014 Toyota Tundra, Upper
• Fits 2006-2013 Lexus IS250, N/A
• Fits 2006-2012 Toyota RAV4, N/A
• Fits 2006 Lexus GS300, N/A, Smooth Pulley
• Fits 2005 Toyota Tacoma, N/A, Smooth Pulley

Common Repair Uses

• Restores proper accessory belt routing when the original pulley is worn or noisy
• Addresses belt squeal caused by pulley bearing wear or surface damage
• Helps correct belt tracking issues in the accessory drive system
• Replaces a damaged idler or tensioner pulley on Toyota and Lexus engines
• Supports reliable operation in high-mileage belt drive service

Installation Notes

Verify pulley dimensions, belt width, and mounting style before installation. This Hayden 5070 pulley uses a single mount hole and does not include mounting hardware, so reuse or source the correct fastener as needed. Inspect the accessory belt, tensioner, and adjacent pulleys during service to confirm the full belt drive system is in good condition.

Quality Assurance

Hayden lists this pulley as meeting or exceeding OEM requirements, making it a direct replacement option for factory-style belt drive service on many Toyota and Lexus models. The Hayden 5070 part number is also useful when cross-checking OE-style replacement needs for Lexus ES350, Toyota Camry, and Toyota Tacoma applications.