Hayden 5025 Accessory Drive Belt Tensioner Pulley

Hayden 5025 Accessory Drive Belt Tensioner Pulley

The Hayden 5025 is an accessory drive belt tensioner pulley built with a steel body and smooth groove design for back idler applications. It is a direct-fit style pulley for a wide range of import and domestic vehicles, including Kia Sportage, Hyundai Santa Fe Sport, Mazda 3, and Chevrolet Colorado applications.

Hayden’s Pulley line focuses on replacement belt drive components that match OE-style dimensions and mounting requirements. This Hayden 5025 pulley measures 2.750 inches outside diameter, 1.062 inches wide, and uses a 0.671875-inch inside diameter bore for the specified applications.

Key Features

• Steel construction with black finish
• Smooth groove, back idler pulley design
• Accessory drive belt tensioner pulley / idler pulley style
• 1.000-inch belt width and 27 mm pulley width
• 0.671875-inch inside diameter / 17 mm bore diameter
• 2.750-inch outside diameter / 69.850 mm O.D.
• Meets or exceeds OEM requirements
• Mounting hardware not included

Detailed Description

Hayden 5025 is an idler / tensioner pulley for accessory drive belt systems where a smooth back-side belt contact surface is required. The steel pulley construction supports stable belt tracking in OE-style belt routing, while the smooth groove quantity and back idler belt type match common serpentine belt tensioner and idler pulley layouts. This part cross-references Dayco 89052 for the same application.

Compatible With 2011-2017 Kia Sportage, pulley; 2015-2016 Hyundai Santa Fe Sport, metal pulley; 2007-2013 Mazda 3, pulley; and 2004-2012 Chevrolet Colorado, pulley. It also serves many additional applications across Kia, Mazda, GMC, Chevrolet, Hummer, Saab, Isuzu, Buick, and Oldsmobile models listed in the fitment data. The Hayden 5025 part number is also referenced in OE-style replacement catalogs for accessory drive belt service.

What It Helps Address

• Belt noise caused by a worn or rough idler pulley
• Uneven belt tracking from pulley surface wear
• Accessory drive belt vibration from pulley bearing wear
• Serpentine belt routing issues tied to pulley damage
• Replacement needs after inspection finds pulley wobble or surface scoring

Installation Notes and Tips

• Verify pulley diameter, width, and bore dimensions before installation.
• Confirm the belt routing and pulley position against the vehicle’s accessory drive layout.
• Inspect the belt, tensioner, and adjacent pulleys for wear before reassembly.
• Mounting hardware is not included, so reuse or source the correct hardware as needed.
• Use the vehicle fitment list to confirm the exact application for your Kia Sportage, Hyundai Santa Fe Sport, Mazda 3, or other listed model.

Quality Assurance

This Hayden pulley meets or exceeds OEM requirements for the listed applications. The Hayden 5025 is built as a replacement accessory drive belt tensioner pulley for OE-style fitment and dimensional consistency.