Dayco 15625 Accessory Drive Belt - Air Conditioning or Fan and Air Conditioning

Dayco 15625 Accessory Drive Belt Overview

The Dayco 15625 accessory drive belt is a top-cog synthetic rubber belt built for accessory drive applications that require stable belt tracking and consistent power transfer. It is specified for select Buick Riviera applications, including air conditioning and fan drive use.

With a 0.44-inch top width, 36-degree angle, and black synthetic rubber compound construction, this belt is built to meet common accessory drive requirements while operating across a wide temperature range. Dayco 15625 also cross-references ACDelco 15625 for the same application.

Key Features

• Part number: Dayco 15625
• Accessory drive belt for belt-driven engine accessories
• Top-cog construction for flexible operation
• Synthetic rubber compound material
• 0.44-inch top width
• Effective length: 62.50 in. / 1587.50 mm
• Outside circumference: 63.07 in. / 1601.98 mm
• 36-degree belt angle
• Operating temperature range: -35°F to 175°F
• Meets SAE J636 and SAE J637 standards

Detailed Description

Dayco 15625 is an accessory drive belt engineered for vehicles that use a narrow, cogged belt profile in the accessory drive system. The synthetic rubber compound and top-cog design support belt flexibility and consistent engagement around pulleys, while the listed dimensions help match the correct application. This belt is listed for 1967-1969 Buick Riviera, air conditioning with a 5 in. pulley, and 1970 Buick Riviera, fan and air conditioning. If you are replacing a worn Buick Riviera accessory drive belt, Dayco 15625 provides the specified size and profile for those applications.

This part cross-references ACDelco 15625 for the same application.

Common Problems This Belt Can Address

• Squealing or slipping from a worn accessory drive belt
• Cracking, glazing, or fraying on the existing belt
• Poor belt tracking on a cogged accessory drive setup
• Loss of drive to the air conditioning compressor or fan system
• Incorrect belt length after a previous replacement

Installation Notes and Tips

• Verify pulley diameter and belt routing before installation.
• Confirm the application matches 1967-1969 Buick Riviera, air conditioning with 5 in. pulley, or 1970 Buick Riviera, fan and air conditioning.
• Inspect pulleys, tensioner components, and accessory alignment before installing the new belt.
• Check belt seating after startup and recheck tension according to the vehicle service procedure.

Quality Assurance

Dayco manufactures this belt to SAE J636 and SAE J637 standards, with a specified operating range from -35°F to 175°F. The listed dimensions and construction details support accurate replacement selection for the confirmed Buick Riviera applications.