5446323 Engine Drive Belt Idler Tensioner Pulley For ISF2.8 QSF2.8

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 5446323 is engineered for maximum durability and precise fitment in ISF2.8 QSF2.8 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: 5446323

Condition: Brand New / High-Quality OEM / Aftermarket
Warranty: 6 Months / 1 Year
Engine Model: ISF2.8 QSF2.8

Application:

ISF2.8: Suitable for light commercial vehicles, covering emission standards from China IV to China VI, with common horsepower ranges of 107–161 hp, used for highway transport vehicles.

QSF2.8: Specifically designed for off-road mobile machinery, such as 1.5–3.5 ton forklifts, 5–8 ton mini excavators, loaders, generator sets, etc., emphasizing compactness and high torque, mostly meeting off-road China III/China IV emission standards.

Why Choose DDP Engine:
100% Quality Guaranteed: All parts undergo rigorous testing to ensure perfect compatibility and premium performance.
Fast Worldwide Shipping: Large inventory in stock. Orders are typically processed within 3-7 working days with reliable global express and Transportation.
Professional Technical Support: Unsure about the part number? Contact our engineering team for exact cross-reference matching.
Flexible Solutions: Providing Genuine, OEM, and premium Aftermarket spare parts to fit your budget.