Hayden 5970 Accessory Drive Belt Idler Pulley

Accessory Drive Belt Idler Pulley for Serpentine Systems

The Hayden 5970 is an accessory drive belt idler pulley built for serpentine belt applications that require a smooth back idler design. It uses a black plastic construction with a 3.750-inch outside diameter and a 1.000-inch belt width profile for direct replacement service on a wide range of vehicles.

Compatible with Ford F-150, Ford Bronco, Chevrolet C1500, and GMC C1500 applications, this pulley is a practical choice when servicing accessory drive belt noise, belt tracking concerns, or worn pulley surfaces. The Hayden 5970 is also a direct-fit option for many Ford Econoline and GM truck and van belt drive setups.

Key Features

• Accessory drive belt idler pulley for serpentine belt systems
• Smooth groove design for back-side belt routing
• Black plastic pulley construction
• 3.750-inch outside diameter for OE-style fitment
• 1.000-inch belt width specification
• Single mounting hole design
• Meets or exceeds OEM requirements

Detailed Product Overview

Hayden Pulley 5970 is engineered as an idler/tensioner pulley for accessory drive systems that use a serpentine belt. The smooth pulley face and back idler style support proper belt routing where the belt rides on the back side of the pulley. With a 17 mm inside diameter and 95.250 mm outside diameter, this part is sized for applications that call for a direct replacement pulley in the accessory drive belt system.

This part cross-references Monroe Shocks & Struts 5689 for the same application. It also serves as a replacement option for several OE and aftermarket numbers, including Dayco 89001 and Four Seasons 45970. For buyers searching Hayden 5970, accessory drive belt idler pulley, or serpentine belt pulley replacement, this part covers a broad range of older Ford and GM vehicles.

Common Problems This Part Can Address

• Squealing or chirping from a worn accessory drive pulley
• Belt tracking issues caused by pulley surface wear
• Rough pulley rotation from aging belt drive components
• Noise in serpentine belt systems on high-mileage vehicles
• Replacement needs for damaged or cracked plastic pulley assemblies

Installation Notes and Tips

Verify pulley diameter, belt width, and bore size before installation to confirm the correct match for your application. Mounting hardware is not included, so reuse or source the required hardware separately as needed. Inspect the serpentine belt, tensioner, and adjacent pulleys during service to help prevent repeat belt-drive noise.

Fits 1987-1996 Ford F-150, N/A; Fits 1987-1996 Ford F-250, N/A; Fits 1987-1996 Ford F-350, N/A; Fits 1987-1992 Ford Bronco, N/A; Fits 1988-1993 Chevrolet C1500, N/A; Fits 1988-1993 Chevrolet C2500, N/A; Fits 1988-1993 Chevrolet C3500, N/A; Fits 1988-1993 Chevrolet K1500, N/A; Fits 1988-1993 Chevrolet K2500, N/A; Fits 1988-1993 Chevrolet K3500, N/A; Fits 1990-1996 Ford E-150 Econoline, N/A; Fits 1990-1996 Ford E-150 Econoline Club Wagon, N/A; Fits 1990-1996 Ford E-250 Econoline, N/A; Fits 1990-1996 Ford E-350 Econoline, N/A; Fits 1990-1996 Ford E-350 Econoline Club Wagon, N/A.

Quality Assurance

Hayden identifies this pulley as meeting or exceeding OEM requirements, making it a specification-driven replacement for accessory drive belt service. The Hayden Pulley line is focused on replacement components for belt drive applications, including idler and tensioner pulley service across a broad vehicle range.