Dayco 11308 Accessory Drive Belt - Power Steering To Vacuum Pump, Water Pump and Idler or Water Pump To Vacuum Pump

Accessory Drive Belt for Select Ford and GM Applications

The Dayco 11308 accessory drive belt is built for select older Ford, Mercury, Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac applications that use a V-belt style accessory drive. It features a synthetic rubber compound, top-cog construction, and a black finish for dependable belt routing in accessory drive systems.

Fits 1984-1991 Ford Tempo, water pump and idler. Fits 1984-1991 Mercury Topaz, water pump and idler. Fits 1982-1984 Buick Century, water pump to vacuum pump, compatible with vehicles containing air conditioning.

Key Features

• Dayco accessory drive belt, part number 11308
• Synthetic rubber compound for consistent belt performance
• Top-cog construction for flexibility in accessory drive routing
• Black belt with .33 top width
• Effective length: 30.75 in. (781.05 mm)
• Outside circumference: 30.88 in. (784.36 mm)
• 36-degree angle profile
• Built to SAE J636 and SAE J637 standards
• Operating temperature range: -35 to 175 degrees

Detailed Description

Dayco 11308 is an accessory drive belt for vehicles that rely on a compact belt path to drive components such as the water pump, idler, power steering, or vacuum pump. The top-cog design improves belt flexibility for routing around pulleys, while the synthetic rubber compound supports stable operation across a wide temperature range. This part number also cross-references Gates 7304 for the same application.

For fitment-specific searches, this belt is commonly referenced for Ford Tempo and Mercury Topaz water pump and idler applications, as well as Buick Century water pump to vacuum pump setups. It also appears in select Cadillac, Chevrolet Celebrity, Oldsmobile Cutlass Ciera, and Pontiac 6000 configurations listed in the fitment data.

Common Issues This Belt Can Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or visible wear on the belt surface
• Loss of proper drive to the water pump, idler, or vacuum pump
• Incorrect belt length or profile on a replacement service
• Reduced belt flexibility in older accessory drive systems

Installation Notes and Tips

Verify the belt length, top width, and angle against the original belt before installation. Confirm the accessory routing and position listed for your vehicle, since this part is used in multiple configurations including water pump and idler, water pump to vacuum pump, and power steering to vacuum pump applications. Check pulley condition and alignment before installing Dayco 11308 to help prevent premature wear.

Quality Assurance

Dayco manufactures this belt to SAE J636 and SAE J637 standards, with operating temperature coverage from -35 to 175 degrees. The 11308 part number is specified for select Ford Tempo, Mercury Topaz, and related GM applications where the listed belt dimensions and routing match the original equipment requirement.