Belt Tensioner 21631484

This is a Belt Tensioner Assembly designed for heavy-duty engines, commonly used in Volvo trucks and construction equipment.

Product Specifications

Average Weight: ~ 1.99 kg

Compatibility: EC700CHR ; A40F/G ; A40F/G FS ; EC750D ; EC950E ; EC750E ; A45G ; A45G FS ; A60H ; L350H ; EC750E HR ; EC950F ; L350H ; A45J ; A50J ; A60J

Supersession: 20491753 > 21155561 > 21145261 > 21631484

Key Specs: 79.5mm pulley diameter, Counter-Clockwise (CCW) rotation

SL: 3B

Key Information

This tensioner is a critical component of the engine's accessory drive system. It applies constant, spring-loaded pressure to the serpentine belt, ensuring it maintains the correct tension to drive engine-mounted accessories such as the alternator, water pump, and A/C compressor.

By maintaining consistent tension, it prevents belt slippage, which can lead to overheating (if the water pump slows down), electrical failure (if the alternator output drops), and excessive vibration that could damage accessory bearings.