5619435 Engine Drive Belt Idler Tensioner Pulley For ISL9.5 ISLe

A belt tensioner is a device that applies a predetermined amount of tension to the engine's accessory drive belt (serpentine belt). Its primary function is to maintain constant, optimal tension on the belt as it wears and stretches over time. This prevents the belt from slipping, squealing, or throwing off, ensuring that critical components like the alternator, water pump, and A/C compressor operate reliably. This belt tensioner 5619435 is engineered for maximum durability and precise fitment inISL9.5 ISLe engines. Manufactured to meet or exceed OEM standards, it ensures optimal engine performance and a long service life under heavy-duty conditions.

Whether for full engine rebuilds or quick replacements, DDP Engine provides you with the most reliable parts at unbeatable wholesale prices.

Parameter Details
Product Name: Belt Tensioner
Part Number: 5619435

Condition: Brand New / High-Quality OEM / Aftermarket
Warranty: 6 Months / 1 Year
Engine Model: ISL9.5 ISLe

Application:

The ISL9.5 series (such as 315E51A, 360E51A, 400E40A, etc.) are used for 6×4 or 6×2 highway trucks, tractors, dump trucks, mixer trucks, etc., with emission standards covering China IV (E40A) and China V (E51A), and a power range of approximately 292–400 horsepower. They can no longer be registered in China (new registrations are prohibited for China IV/China V vehicles), and are now mostly used for export or off-highway/special operations.

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