Roadmax 4K300AP Serpentine Belt - Air Conditioning, Alternator or Water Pump and Alternator

Roadmax 4K300AP Serpentine Belt Overview

The Roadmax 4K300AP is a standard automotive V-ribbed belt built with EPDM and polyester cord for dependable accessory drive operation. It is a fitment-based replacement for select vehicles including the 2005 Smart Fortwo air conditioning application and 2000-2001 Acura Integra alternator application.

Roadmax positions this Automotive V-Ribbed Belt (Standard) line for budget-conscious buyers who want a quality replacement without stepping up to a premium-performance belt. The 4K300AP follows common OE-style sizing and rib configuration for straightforward replacement in the accessory drive belt system.

Key Features

• Part number: 4K300AP
• Automotive V-Ribbed Belt (Standard) construction
• EPDM belt material for everyday accessory drive service
• Polyester cord material for belt stability
• 4-rib design
• Top width: 0.56 in. / 14 mm
• Effective length: 30.19 in. / 767 mm
• Outside circumference: 30.75 in. / 781 mm
• Cross section designation: K

Detailed Description

Roadmax 4K300AP is a serpentine belt for accessory drive systems that use a 4-rib K-section profile. Its EPDM construction and polyester cord support consistent belt tracking and dimensional stability in standard-duty applications. This belt is listed for positions including air conditioning, alternator, and water pump and alternator service depending on the vehicle application.

Fitment includes 2005 Smart Fortwo, air conditioning; 2000-2001 Acura Integra, alternator; 1992-1994 Mitsubishi Expo LRV, alternator; 1989-1994 Suzuki Swift, air conditioning; 1992 Dodge Colt, alternator; 1983-1986 Dodge Charger, water pump and alternator; and 1983-1986 Plymouth Turismo, water pump and alternator. This part cross-references Gates K040300 and Bando 4PK770 for the same application.

What This Belt Helps Address

• Squealing or slipping accessory drive belt noise
• Cracked, glazed, or worn serpentine belt surfaces
• Loss of alternator drive performance
• Reduced air conditioning compressor drive function
• Water pump and alternator belt wear on listed applications

Installation Notes and Tips

Verify belt length, rib count, and cross section before installation. Confirm the routing path against the vehicle belt diagram and inspect pulleys, tensioners, and idlers for wear before fitting the new belt. For best results, replace the belt only after confirming the application matches the listed year, make, model, and position.

Quality Assurance

Roadmax’s standard V-ribbed belt line is aimed at buyers who need a practical replacement with OE-style sizing and materials. The EPDM belt compound and polyester cord construction support consistent service in everyday accessory drive use.