8-Rib Serpentine Fan Belt for John Deere 6800/6900 Series Tractors Without AC or Air Brakes SKU: QT59907G

A broken or slipping serpentine belt shuts down your cooling system, alternator, and hydraulics all at once—leaving you stranded in the field during critical operations. This 8PK2190 serpentine belt fits tractors from serial number 159439 onwards that have mechanical belt tensioners but no air conditioning or air brakes. At 2190mm (86-7/32"), it's the precise length needed for later production models with revised pulley configurations.

Why Precision Matters

• The 8-rib design provides exceptional strength for high-horsepower applications while maintaining the flexibility needed for proper routing
• Modern EPDM construction outlasts older belt materials by resisting heat cracking, stretching, and rib wear - the three primary failure modes
• Each rib maintains precise contact with pulley grooves throughout the belt's service life, ensuring efficient power transfer and quiet operation even after thousands of hours
• Using the wrong belt for your serial number range causes immediate tension and alignment problems. The serial number break point is important - using incorrect length belts causes premature failure and potential component damage.

Verify your serial number is 159439 or higher before ordering - earlier tractors use different belt lengths. This belt requires a mechanical tensioner system and fits ONLY models without A/C or air brakes. S&H Parts has been matching the right belt to the right tractor for over 50 years—call us if you need help confirming your serial number range.