Defender New Drive Belts
Modern Defender drive belts power essential engine accessories, including alternator, water pump, power steering, and air conditioning systems. These high-performance serpentine belts must maintain consistent tension and resist stretch under varying loads and temperatures. Quality belts ensure reliable operation of critical systems through demanding conditions.
Belt System Design and Function
L663 engines use sophisticated belt systems with automatic tensioners that maintain optimal belt tension across the engine's operating range. The serpentine design provides efficient power transfer to multiple accessories through a single belt configuration. Engine components depend on reliable belt operation for proper function and cooling.
Automatic tensioners use spring-loaded mechanisms that compensate for belt stretch and wear, maintaining proper tension without manual adjustment. Quality replacement tensioners and idler pulleys are essential for belt longevity and system reliability.