URO 2742020019 Accessory Drive Belt Idler Pulley - Smooth Pulley

Accessory Drive Idler Pulley Overview

This URO accessory drive belt idler pulley is built for Mercedes-Benz applications that require precise belt tracking and OE-style pulley dimensions. The 2742020019 part number is a direct-fit solution for smooth-pulley serpentine belt systems, with fitment spanning multiple Mercedes-Benz models.

Key Features

• OE-style idler pulley dimensions for proper belt alignment and clearance
• Polyamide pulley construction with a black finish
• Smooth pulley surface for serpentine belt routing
• Dust shield included for added protection
• Single mounting hole design with spacer included
• URO 2742020019 for Mercedes-Benz accessory drive belt service

Detailed Description

The URO 2742020019 accessory drive belt idler pulley is engineered around OE dimensions to maintain correct serpentine belt path geometry and consistent pulley alignment. Its polyamide construction, smooth contact surface, and 65.18 mm outside diameter support stable belt operation in accessory drive systems. This part number is used across Mercedes-Benz CLA250, GLB250, A220, Sprinter, GLA250, GLC300, C300, and related applications listed in the fitment data.

For Mercedes-Benz owners servicing a noisy, worn, or misaligned belt drive, this idler pulley provides a direct replacement option for the accessory drive system. The 2742020019 part number appears in multiple Mercedes-Benz fitments, including smooth-pulley applications and models that specify a N/A position in the catalog data.

What It Is Used For

• Correcting belt tracking issues in the accessory drive system
• Replacing a worn pulley surface that can affect serpentine belt operation
• Addressing belt noise caused by pulley wear or misalignment
• Restoring proper clearance in OE-style belt routing
• Supporting reliable accessory drive performance on Mercedes-Benz applications

Installation Notes and Tips

Verify the vehicle’s option codes and pulley style before ordering. Some 2022-2025 Mercedes-Benz CLA250, CLA35 AMG, GLB250, A220, Sprinter 1500, and Sprinter 2500 applications list smooth-pulley fitment with option-code exclusions, while earlier applications are cataloged with N/A position data. Confirm the belt type, pulley style, and mounting dimensions against the existing part before installation.

Quality Assurance

URO states this pulley is manufactured to OE idler pulley dimensions for proper clearances and belt alignment. The part is backed by a 24-month unlimited mileage warranty.