Gates 4K358AP Serpentine Belt - 4-Rib 35.8 Inch

The Gates 4K358AP (K040358) is a premium Micro-V® serpentine belt engineered for reliable performance in automotive accessory drive systems. This 4-rib belt measures 35.8 inches in length and is designed to meet or exceed OEM specifications for a precise fit and quiet operation.

Advanced Construction Features:

• EPDM (Ethylene Propylene Diene Monomer) rubber compound resists heat, cracking, and weathering
• Aramid fiber tensile cords provide exceptional strength and minimal stretch
• Truncated rib profile prevents bottoming out in pulleys and reduces heat buildup
• Form-ground ribs ensure precise dimensional control for optimal pulley engagement
• Flexible construction withstands billions of bends in serpentine drive applications

Performance Benefits:

• Designed for use with or without automatic tensioners
• Compatible with small diameter pulleys and backside idlers
• Reduced noise and vibration compared to conventional V-ribbed belts
• Superior resistance to oil, debris, and contamination
• Meets SAE J1459 and SAE J2432 industry standards

Gates recommends replacing serpentine belts at 90,000 miles to prevent unexpected breakdowns and maintain optimal engine performance. This belt features Gates' industry-leading manufacturing precision, resulting in the quietest and most reliable serpentine belts available.