4936440 4891116 4987964 4898548 4891146 2852396 9405-00690 ZK6737D D85W32 65115 Engine V-ribbed Belt Tensioner Pulley For 6ISBe ISBe ISDe ISL

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 4936440 4891116 4987964 4898548 4891146 2852396 9405-00690 ZK6737D D85W32 65115 is engineered for maximum durability and precise fitment in 6ISBe ISBe ISDe ISL Engine. 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: 4936440 4891116 4987964 4898548 4891146 2852396 9405-00690 ZK6737D D85W32 65115  

Condition: Brand New / High-Quality OEM / Aftermarket
Warranty: 6 Months / 1 Year
Engine Model: 6ISBe ISBe ISDe ISL

Application:

ISBe (e.g., ISBe4.5 / ISBe5.9 / ISBe6.7): Light to medium-duty commercial vehicles, such as 6–8 ton light trucks, 9–12 meter buses, refrigerated trucks, municipal vehicles, and some light engineering equipment; commonly 4-cylinder (4.5L) or 6-cylinder (5.9L/6.7L), with power outputs of approximately 135–285 horsepower, meeting China III to China IV emission standards.

ISDe (e.g., ISDe6.7 / ISDe8.9): Medium and heavy-duty trucks and intercity buses, typically 6-cylinder (6.7L) or inline 6-cylinder (8.9L), with power outputs of 250–350 horsepower, primarily targeting logistics traction and public transport/tourist buses meeting China IV/China V emission standards, emphasizing fuel economy and low-speed torque.

ISL (e.g., ISL8.9 / ISL9.5): Heavy-duty trucks, buses, construction vehicles, and marine/power generation vehicles, with a displacement of 8.9L or 9.5L (inline 6-cylinder), producing 300–400+ horsepower. These are "medium-heavy-duty" electronically controlled engines, primarily used in 12–16 ton heavy trucks, buses, or off-highway machinery, meeting China III to China V emission standards.

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