Dayco 17403 Accessory Drive Belt

Dayco 17403 Accessory Drive Belt Overview

The Dayco 17403 accessory drive belt is a top-cog, synthetic rubber compound belt built for accessory drive applications that demand stable operation across a wide temperature range. With a 0.53-inch top width, 36-degree angle, and black finish, it is specified for power steering and fan-and-air-pump positions on select Isuzu, Honda, and Cadillac vehicles.

Fits 1991-1997 Isuzu Rodeo, power steering. Fits 1994-1996 Honda Passport, power steering. Fits 1988-1995 Isuzu Pickup, power steering. Fits 1989-1994 Isuzu Amigo, power steering. Fits 1988-1991 Isuzu Trooper, power steering. Fits 1982-1985 Cadillac Eldorado, fan and air pump. Fits 1982-1985 Cadillac Fleetwood, fan and air pump. Fits 1982-1985 Cadillac Seville, fan and air pump. Fits 1982-1984 Cadillac DeVille, fan and air pump.

• Dayco accessory drive belt, part number 17403
• Synthetic rubber compound construction for accessory drive service
• Top-cog belt design for improved flexibility in routed belt systems
• 0.53-inch top width and 36-degree angle
• Effective length: 40.25 in. / 1022.35 mm
• Outside circumference: 40.51 in. / 1028.96 mm
• Operating temperature range: -35 to 175 degrees
• Built to SAE J636 and SAE J637 standards

Detailed Product Description

Dayco 17403 is an accessory drive belt for vehicles that use a single belt to drive engine accessories such as power steering, fan, and air pump systems. The top-cog construction helps the belt conform to pulley routing, while the synthetic rubber compound supports consistent performance in underhood conditions. This part number is a direct fit for select Isuzu Rodeo, Isuzu Pickup, Isuzu Amigo, Isuzu Trooper, Honda Passport, and Cadillac applications listed above. If you are replacing a worn Dayco 17403 belt or cross-referencing an OE-style replacement, this belt matches the specified dimensions and application requirements for those vehicles.

This part cross-references Gates 9403 and ACDelco 9403HD for the same application.

Common Problems This Belt Can Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or visible wear on the belt surface
• Loss of power steering assist caused by belt slip or deterioration
• Accessory drive noise from improper belt tension or age-related stretch
• Reduced accessory operation in vehicles using the power steering or fan-and-air-pump drive path

Installation Notes and Tips

Verify the belt routing, pulley alignment, and application position before installation. Confirm the vehicle uses the listed power steering or fan-and-air-pump configuration, since fitment varies by engine and accessory setup. Inspect related pulleys and tensioning components for wear before installing the new belt, and compare the existing belt length and profile to the Dayco 17403 specifications.

Quality Assurance

Dayco manufactures accessory drive components to published dimensional and performance standards, and this belt is listed to SAE J636 and SAE J637. The Dayco 17403 is specified for the confirmed vehicle applications shown above and is built for service in a wide operating temperature range.