Cloyes B40291 Accessory Drive Belt Kit

Accessory Drive Belt Kit Overview

Cloyes B40291 is a specific-fit accessory drive belt kit for complete serpentine belt system service. It combines matched belt-drive components to restore proper tension, alignment, and smooth operation in one repair.

Key Features

• Standard replacement accessory drive belt kit for a specific application
• Grooved EPDM belt for consistent belt tracking and resistance to cracking
• Polymer pulley construction for reduced vibration and stable operation
• 6-groove pulley design for proper belt engagement
• Precision-matched components for a complete belt-drive service

Detailed Description

This Cloyes accessory drive belt kit is built for vehicles that use a grooved serpentine belt system and specific-fit components. The kit is intended to address common wear points in the accessory drive system, including belt stretch, pulley wear, and tension-related noise. For Ford Explorer and Mercury Mountaineer applications, B40291 provides a direct service solution that supports proper belt routing and system performance. The part number B40291 is also referenced as BK5364 for cross-reference purposes.

Cloyes designs these kits around matched components so the belt, pulleys, and tensioning elements work together as a system. That approach helps maintain alignment and reduce vibration in the accessory drive on Ford Explorer and Mercury Mountaineer applications.

What It Helps Fix

• Squealing or chirping from a worn accessory drive belt
• Belt slip caused by weak tension or pulley wear
• Cracking, glazing, or stretching in the belt
• Noise and vibration from aging belt-drive components
• Uneven belt tracking in the serpentine drive system

Installation Notes

Verify belt routing and component layout before installation. This kit is for specific-fit applications only, so confirm compatibility by year, make, and model before ordering. Replace related belt-drive components at the same time when the system shows wear to help restore consistent operation. Professional installation is recommended for accurate setup and inspection of the accessory drive system.

Quality Assurance

Cloyes backs this kit with an industry-leading warranty and technical support. The brand also notes more than a century of professional use in belt-drive and engine timing applications.