Roadmax 5K340AP Serpentine Belt

Roadmax 5K340AP Serpentine Belt Overview

The Roadmax 5K340AP is a standard automotive V-ribbed belt built with EPDM rubber and polyester cord for everyday accessory drive service. It is sized for applications that call for a 5-rib, K-section serpentine belt with a 34.12-inch effective length and 34.625-inch outside circumference.

Roadmax positions this belt line for budget-conscious buyers who want dependable quality without stepping up to a premium-performance belt. The 5K340AP is a direct-fit option for a range of accessory drive systems, including alternator, air conditioning, fan, and water pump applications on select Toyota, BMW, Cadillac, and other vehicles.

Key Features

• Part number: 5K340AP
• Automotive V-Ribbed Belt (Standard) construction
• EPDM belt material for common accessory drive service
• Polyester cord reinforcement
• 5-rib design with K cross section
• Top width: 0.667 in. (17 mm)
• Effective length: 34.12 in. (867 mm)
• Outside circumference: 34.625 in. (880 mm)
• Compatible with select Toyota Tacoma, Toyota 4Runner, BMW 3 Series, and Cadillac CT5 applications

Detailed Description

The Roadmax 5K340AP serpentine belt is engineered to match common OE-style dimensions for accessory drive systems that rely on a 5-rib belt profile. Its EPDM construction and polyester cord help provide the dimensional stability expected in modern belt routing, while the standard-duty design keeps it aligned with value-focused replacement needs. This part cross-references Gates K050340 and Continental 5PK863 for the same application.

Fitment includes 2020-2025 Cadillac CT5, alternator; 2016-2019 Cadillac CT6, alternator; 1998-2003 Toyota Tacoma, fan and alternator; 2004 Toyota Tacoma, alternator and water pump; 1998-2000 Toyota 4Runner, fan and alternator; and 2001-2002 BMW 325i, air conditioning. It also fits additional BMW 3 Series, 5 Series, X5, Z3, Mitsubishi Mirage, Mercury Villager, Ford Probe, Mazda 626, Mazda MX-6, Mazda MX-3, Isuzu Impulse, Pontiac LeMans, and Toyota Hilux applications listed in the fitment data.

What This Belt Helps Address

• Squealing or slipping accessory drive belt noise
• Cracked, glazed, or worn serpentine belt surfaces
• Loss of alternator, A/C, fan, or water pump drive performance
• Incorrect belt length or rib count during replacement
• Routine maintenance on high-mileage accessory drive systems

Installation Notes and Tips

Verify belt routing, rib count, and measured length before installation. This belt is listed for multiple positions, including alternator, air conditioning, fan and alternator, and alternator and water pump applications, so confirm the exact engine accessory layout for your vehicle. For fitment-specific examples, it fits 2004 Toyota Tacoma, alternator and water pump; fits 1998-2003 Toyota Tacoma, fan and alternator; and fits 2001-2002 BMW 330i, air conditioning. Inspect pulleys, tensioners, and idlers for wear before installing the new belt.

Quality Assurance

Roadmax markets this standard V-ribbed belt as a quality replacement option for buyers who do not require premium-belt performance. The EPDM belt construction and reinforced cord design support consistent service in everyday accessory drive applications.