Gates K040506 Serpentine Belt - Fan and Power Steering

Gates K040506 Premium OE Micro-V Belt

The Gates K040506 is a Premium OE Micro-V serpentine belt built for precise fit and consistent accessory drive performance. It uses EPDM belt material with polyester cord construction and a 4-rib, K-section profile to match OE size, construction, and materials for the 1990-1996 INFINITI Q45 fan and power steering application.

Key Features

• Part number: K040506
• Brand line: Premium OE Micro-V Belt
• 4-rib automotive V-ribbed belt, standard type
• EPDM belt material for durability in accessory drive service
• Polyester cord material for stable belt construction
• OE Performance comparison rating
• Effective length: 1285 mm (50.606 in)
• Outside circumference: 1299 mm (51.125 in)
• Top width: 14 mm (.56 in)

Product Details

Gates Micro-V belts are built for import and domestic vehicles that rely on accurate belt geometry and dependable accessory drive operation. The K040506 follows OE-style dimensions and materials to support proper belt tracking on the fan and power steering drive used in 1990-1996 INFINITI Q45 models. This part cross-references Dayco 5040506 for the same application. Gates K040506 is a direct-fit serpentine belt choice for INFINITI Q45 fan and power steering service where the original belt specification calls for a 4-rib K-section belt.

What This Belt Helps Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or fraying on the existing serpentine belt
• Loss of proper belt tension or belt tracking issues
• Accessory drive slip affecting fan and power steering operation
• Replacement needs for OE-size belt service on INFINITI Q45 applications

Installation Notes and Tips

Verify the belt routing, rib count, and length before installation. Confirm the application is the fan and power steering position on 1990-1996 INFINITI Q45 models, and compare the removed belt to the listed dimensions: 1285 mm effective length, 1299 mm outside circumference, and 14 mm top width. Inspect pulleys, tensioner condition, and alignment before installing the new belt to help prevent premature wear.

Quality Assurance

Gates manufactures this Premium OE Micro-V Belt to OE-size, OE-construction, and OE-material standards for consistent fit and performance in the specified application. The K040506 is an OE Performance-rated replacement for the listed INFINITI Q45 fitment.