Dayco 5040358 Serpentine Belt

Dayco 5040358 Serpentine Belt Overview

The Dayco 5040358 serpentine belt is built for accessory drive applications that demand stable operation across a wide temperature range. Made from EPDM with aramid reinforcement, this 4-rib K-section belt is sized for specific power steering, air conditioning, water pump, and alternator drives on select Lexus, Mitsubishi, Mazda, Toyota, Honda, Nissan, Acura, and Dodge models.

Use Dayco 5040358 when you need a black, straight-rib belt with SAE J1459 and SAE J2432 compliance for the listed applications. This part number is also referenced in OE and aftermarket catalogs for the same service positions.

Key Features

• EPDM construction with aramid reinforcement for durable accessory drive performance
• 4-rib, K-section profile with a .54 top width
• Effective length: 35.83 in. (910.09 mm)
• Outside circumference: 36.50 in. (927.10 mm)
• Black belt with straight rib profile and standard rib depth
• Operating temperature range: -45°F to 212°F
• Built to SAE J1459 and SAE J2432 standards

Detailed Description

Dayco 5040358 is a serpentine belt for accessory drive belt system components where the belt must maintain grip and dimensional stability under heat, cold, and continuous engine operation. Its EPDM rubber construction helps resist wear, while aramid reinforcement adds strength for demanding routing and load conditions. The 4-rib K-section design and 35.83-inch effective length make it a direct-match service belt for the listed fitments, including 1986-1989 Honda Accord air conditioning, 1996-2000 Toyota 4Runner air conditioning and idler, and 2004-2009 Mitsubishi Galant power steering. This part number 5040358 also appears in cross-reference catalogs for applications such as Gates K040358 and ACDelco 4K358.

Compatible With select applications including 2014-2016 Lexus LS600h water pump, 2007-2012 Mitsubishi Eclipse power steering, 2000-2002 Mazda Millenia water pump to power steering, and 1989-1994 Nissan Sentra water pump and alternator without power steering. Dayco 5040358 is a fitment-specific belt, so matching the vehicle, engine accessory layout, and position is essential.

Common Uses

• Restoring proper drive to the power steering system
• Replacing a worn belt on air conditioning and idler routing
• Addressing belt noise caused by glazing, cracking, or stretch
• Correcting accessory drive slip on water pump or alternator applications
• Servicing a belt that no longer tracks correctly on the pulley system

Installation Notes and Tips

Verify the vehicle year, make, model, and listed position before ordering. Confirm belt routing against the existing accessory drive layout, since this part is used in multiple positions such as water pump, power steering, air conditioning, and water pump and alternator applications. Inspect pulleys, tensioners, and idlers for wear before installation, and compare the old belt length and rib count to the replacement. For fitment reference, this belt is listed for 1986-1990 Acura Legend air conditioning and idler, 1989-1990 Dodge Colt air conditioning and idler, and 1991-1997 Toyota Tercel air conditioning without power steering.

Quality Assurance

Dayco manufactures this belt to meet SAE J1459 and SAE J2432 standards, with EPDM and aramid-reinforced construction specified for consistent accessory drive service. The Dayco 5040358 part number is supported by multiple OE and aftermarket cross-references, including Gates K040358 and ACDelco 4K358, for the same application.