Belt Tensioner 381-2509 3812509 for Caterpillar Engines

2025-09-11T09:43:26+10:00

Price: 590.00

Product Overview:

Part Name: Belt Tensioner

Part Numbers: 381-2509, 3812509

Application: Designed for Caterpillar diesel engines to maintain proper tension on accessory drive belts, ensuring reliable operation of alternators, pumps, and other belt-driven components.

Compatible Models: Engines: Caterpillar engine families using belt tensioner 381-2509 (verify via parts manual/serial number) ; Equipment: CAT excavators, loaders, dozers, and trucks powered by applicable engines.

Function: Keeps the drive belt at correct tension, prevents slippage, reduces premature belt wear, and protects engine-driven accessories under continuous operation.

Condition: Brand New / OEM Standard Replacement

Technical Specifications:

Type: Automatic belt tensioner assembly

System: Caterpillar engine accessory drive system

Material: High-strength alloy housing with heavy-duty spring and sealed bearing pulley

Performance: OEM-rated tensioning capacity for reliable operation in high-vibration and high-temperature environments

Cycle Life: Long-lasting durability under demanding operating conditions

Weight: OEM standard (varies by configuration)