Dayco 89739 Accessory Drive Belt Tensioner Assembly

Accessory Drive Belt Tensioner for Kia and Hyundai

Dayco 89739 is an automatic serpentine accessory drive belt tensioner assembly built for select Kia and Hyundai applications. It is engineered with a single 70 mm pulley, 6 grooves, and clockwise rotation to match the specified belt routing and accessory drive requirements.

Use Dayco 89739 when replacing a worn accessory drive belt tensioner assembly on vehicles such as the Kia Forte, Kia Soul, Hyundai Elantra, and Hyundai Tucson. This part number 89739 is listed for multiple late-model compact and crossover applications and includes the mounting bolt noted in fitment data.

Key Features

• Brand: Dayco
• Part number: 89739
• Accessory drive belt tensioner assembly
• Automatic tensioner design
• Serpentine belt type
• Clockwise rotation
• 1 pulley with 70 mm diameter
• 6-groove pulley, 25 mm width
• Includes mounting bolt per fitment notes

Detailed Description

Dayco 89739 is an OE-style accessory drive belt tensioner assembly for serpentine belt systems. The automatic design helps maintain proper belt tension across the accessory drive, while the 70 mm, 6-groove pulley is specified for the listed Kia and Hyundai engine accessory layouts. If you are replacing a noisy, weak, or binding tensioner, this part number 89739 provides a direct-fit service option for the covered vehicles.

Compatible With 2017-2024 Kia Forte, 2021-2024 Kia Seltos, 2016-2024 Kia Soul, 2020-2023 Kia Forte5, 2017-2018 Kia Forte5, 2018-2021 Hyundai Kona, 2016-2021 Hyundai Tucson, 2019-2021 Hyundai Veloster, 2016-2020 Hyundai Elantra, and 2018-2020 Hyundai Elantra GT. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Replacement Reasons

• Serpentine belt squeal from weak belt tension
• Rough, noisy, or seized tensioner pulley
• Belt tracking issues caused by worn pulley bearings
• Accessory drive vibration from inconsistent tension
• Service replacement on high-mileage Kia and Hyundai belt drive systems

Installation Notes and Tips

Verify belt routing before removal and confirm pulley alignment during installation. Inspect the serpentine belt, idler pulleys, and accessory drive components for wear at the same time. For the listed applications, confirm the correct engine configuration and compare the existing tensioner to Dayco 89739 before installation.

Quality Assurance

Dayco is a recognized name in accessory drive components, and this tensioner assembly is built to match the specified belt type, pulley dimensions, and rotation for the listed applications. Part number 89739 is intended for direct replacement use on the covered Kia and Hyundai vehicles.