Dayco 17585 Accessory Drive Belt

Accessory Drive Belt for Ford and More

The Dayco 17585 accessory drive belt is built for accessory drive systems that need consistent grip and stable operation. With a synthetic rubber compound, top-cog construction, and a 36-degree angle, it is suited for fan, alternator, and air conditioning drive applications across a wide range of classic Ford, Lincoln, and Pontiac vehicles.

For buyers searching for a Ford F-250 accessory drive belt, Ford F-350 fan and alternator belt, or a replacement belt for older Bronco and Econoline applications, this Dayco belt matches the listed OE-style dimensions and fitment requirements.

• Synthetic rubber compound construction for accessory drive use
• Top-cog belt design for flexible routing and pulley engagement
• Black finish with a .53 in top width
• Effective length: 58.50 in; outside circumference: 58.77 in
• Operates in temperatures from -35°F to 175°F
• Built to SAE J636 and SAE J637 standards
• Dayco 17585 cross-references ACDelco 9585HD for the same application

Fitment and Application Details

This belt is listed for multiple accessory drive configurations, including fan and alternator, fan and air conditioning, fan and power steering, and air conditioning applications. It fits 1982-1986 Ford Bronco, Fan and Air Conditioning; 1983-1986 Ford E-100 Econoline, Fan and Air Conditioning; 1983-1986 Ford E-100 Econoline Club Wagon, Fan and Air Conditioning; 1983-1986 Ford E-150 Econoline, Fan and Air Conditioning; 1983-1986 Ford E-150 Econoline Club Wagon, Fan and Air Conditioning; 1983-1986 Ford E-250 Econoline, Fan and Air Conditioning; 1983-1986 Ford E-250 Econoline Club Wagon, Fan and Air Conditioning; 1983-1986 Ford E-350 Econoline, Fan and Air Conditioning; 1983-1986 Ford E-350 Econoline Club Wagon, Fan and Air Conditioning; 1982-1986 Ford F-150, Fan and Air Conditioning; 1982-1986 Ford F-250, Fan and Air Conditioning; 1982-1986 Ford F-350, Fan and Air Conditioning; 1984 Ford F-150, Fan and Alternator, w/70 Amp Alt., w/A.C.; 1984 Ford F-250, Fan and Alternator, w/70 Amp Alt., w/A.C.; 1984 Ford F-350, Fan and Alternator, w/70 Amp Alt., w/A.C.; 1985-1987 Ford F-250, Fan and Alternator, Compatible with vehicles containing air conditioning; 1985-1987 Ford F-350, Fan and Alternator, Compatible with vehicles containing air conditioning; 1988 Ford F-250, Fan and Alternator, w/o Ambulance Pkg.; 1988 Ford F-350, Fan and Alternator, w/o Ambulance Pkg.; 1989 Ford F-250, Fan and Alternator, w/o Ambulance Pkg., Mfg. Before 11/88; 1989 Ford F-350, Fan and Alternator, w/o Ambulance Pkg., Mfg. Before 11/88; 1971 Lincoln Continental, Fan and Power Steering, w/A.C., Late; 1963 Pontiac Bonneville, Air Conditioning, Late; 1963 Pontiac Catalina, Air Conditioning, Late; 1963 Pontiac Grand Prix, Air Conditioning, Late.

What This Belt Helps Address

• Squealing or slipping accessory drive belt noise
• Loss of alternator drive performance
• Reduced fan or air conditioning belt engagement
• Cracking, glazing, or wear on an aging belt
• Incorrect belt length for listed Ford, Lincoln, or Pontiac applications

Installation Notes and Tips

Verify belt routing, pulley alignment, and the listed application notes before installation. This Dayco 17585 belt is specified by vehicle, engine accessory setup, and in some cases build date or equipment package, so confirm the exact configuration on your Ford F-250, Ford F-350, Bronco, or Econoline before ordering. Inspect pulleys and tensioner components for wear so the new belt can track correctly.

Quality Assurance

Dayco manufactures this accessory drive belt to meet SAE J636 and SAE J637 standards, with operating temperature capability from -35°F to 175°F. The 17585 part number is also used across multiple OE and aftermarket references, including Ford, Motorcraft, Gates, and ACDelco listings for the same application.