Dayco 5061120 Serpentine Belt - Main Drive

Dayco 5061120 Serpentine Belt Overview

The Dayco 5061120 serpentine belt is a 6-rib accessory drive belt built with EPDM and aramid reinforcement for consistent belt tracking and durability in demanding engine bays. It is a black K-section belt with a 0.82 in top width and an effective length of 112.01 in (2845.06 mm).

Compatible With 1994 Ford E-350 Econoline, Main Drive; 1994 Ford E-350 Econoline Club Wagon, Main Drive; 1994 Ford F-250, Main Drive; 1994 Ford F-350, Main Drive; 1987-1988 Buick Skylark, Main Drive; 1988 Oldsmobile Cutlass Calais, Main Drive; 1987 Oldsmobile Calais, Main Drive; and 1987 Pontiac Grand Am, Main Drive. This part cross-references Gates K061120 and ACDelco 6K1120 for the same application.

Key Features

• Part number: 5061120
• 6-rib serpentine belt for accessory drive systems
• EPDM construction with aramid reinforcement
• Effective length: 112.01 in / 2845.06 mm
• Outside circumference: 112.67 in / 2861.82 mm
• Top width: 0.82 in
• Black belt with straight rib profile
• Meets SAE J1459 and SAE J2432 standards
• Operating temperature range: -45°F to 212°F

Detailed Description

Dayco 5061120 is a serpentine belt for main drive accessory systems that require a 6-rib K-section belt. The EPDM rubber compound is paired with aramid reinforcement to support stable operation across a wide temperature range, while the straight rib profile helps maintain smooth pulley engagement. For buyers searching for a Ford E-350 Econoline serpentine belt, Ford F-250 accessory drive belt, or a replacement belt for Buick Skylark and Pontiac Grand Am applications, this part number provides a direct match to the listed vehicle configurations.

Use Dayco 5061120 when replacing a worn or noisy accessory drive belt on 1994 Ford E-350 Econoline and E-350 Econoline Club Wagon models with the Ambulance Package, as well as 1994 Ford F-250 and F-350 models excluding Leese/Neville alternator setups. It also matches 1987-1988 Buick Skylark, 1988 Oldsmobile Cutlass Calais, 1987 Oldsmobile Calais, and 1987 Pontiac Grand Am vehicles with air conditioning.

What This Belt Helps Address

• Squealing or chirping from a worn serpentine belt
• Cracking, glazing, or fraying on the accessory drive belt
• Loss of proper belt tension or pulley grip
• Accessory drive noise from aging belt material
• Fitment issues when replacing the original 6-rib belt

Installation Notes and Tips

Verify the rib count, effective length, and outside circumference before installation. Confirm the vehicle application exactly matches the listed year, make, model, and notes, including Ambulance Package and air conditioning requirements where specified. Inspect pulleys, tensioners, and idlers for wear before installing the new belt, and route the belt according to the factory belt path for the specific engine configuration.

Quality Assurance

Dayco manufactures this belt to SAE J1459 and SAE J2432 standards, with EPDM construction and aramid reinforcement selected for accessory drive service. The 5061120 part number is also referenced by several major aftermarket and OE-related catalogs, including Gates K061120 and ACDelco 6K1120.