Gates K050396 Serpentine Belt

Reliable Serpentine Belt for BMW, Land Rover, Mazda, and Porsche

The Gates Premium OE Micro-V Belt K050396 is engineered to meet original equipment specifications for select BMW, Land Rover, Mazda, and Porsche models. Designed for durability and consistent performance, this serpentine belt supports accessory drive systems with precision fit and reliable operation.

• Top width options: 0.667 inch and 17 mm for precise fitment
• Effective length: 1007 mm (39.64 inches) ensuring proper tension
• Constructed with polyester cord material for strength and flexibility
• Epdm belt material and washer pump for enhanced durability
• 5-rib automotive v-ribbed belt design (standard K section)
• Outside circumference: 1021 mm (40.205 inches) for accurate routing
• OE comparison rating ensures original equipment performance

About the Gates Premium OE Micro-V Belt Line

The Premium OE Micro-V Belt line by Gates is designed to provide a direct replacement for original equipment serpentine belts. This product line focuses on delivering consistent quality and fitment for automotive v-ribbed belts, using materials like EPDM and polyester cords to maintain strength and flexibility under various operating conditions. The K050396 belt is part of this line, ensuring compatibility and performance for vehicles requiring a K section belt with 5 ribs.

Product Details and Specifications

This serpentine belt features a top width of 0.667 inches (17 mm) and an effective length of 1007 mm (39.64 inches), making it suitable for specific accessory drive belt systems. The belt’s polyester cord material provides tensile strength, while the EPDM rubber compound offers resistance to heat, ozone, and wear. The 5-rib design ensures smooth power transmission to engine accessories such as the alternator, power steering pump, and air conditioning compressor. The K section cross designation aligns with OEM standards for vehicles like the BMW 540i, 740i, 740iL, 840Ci, Porsche 944, Mazda Millenia, Land Rover Range Rover, and BMW X5.

Compatible Vehicles and Common Applications

• BMW 540i, 740i, 740iL, 840Ci, X5
• Land Rover Range Rover
• Mazda Millenia
• Porsche 944

• Replaces worn or cracked serpentine belts
• Addresses belt slippage and squealing noises
• Restores proper accessory drive function
• Prevents overheating caused by belt failure
• Maintains engine performance and accessory operation

Installation Notes and Tips

Ensure the belt routing matches the vehicle’s accessory drive diagram before installation. Check pulleys and tensioners for wear or damage to avoid premature belt failure. Use proper tensioning tools to achieve the recommended belt tension. Inspect the belt periodically for signs of wear, cracking, or glazing to maintain optimal performance.

Quality Assurance and Warranty

The Gates Premium OE Micro-V Belt K050396 is manufactured to meet or exceed original equipment standards. The use of EPDM and polyester materials ensures durability and resistance to environmental factors. This belt carries an OE comparison rating, confirming its suitability as a replacement part. Warranty details are provided by Gates and typically cover defects in material and workmanship under normal use.