hino auto parts

The serpentine belt is a crucial component in modern automotive engines, connecting various accessory components such as the alternator, power steering pump, water pump, and air conditioning compressor. An Original Equipment Manufacturer (OEM) serpentine belt is designed to meet specific vehicle specifications, making it essential for ensuring optimal engine performance and longevity. This article delves into the importance of OEM serpentine belts, their features, and maintenance tips to keep your vehicle running smoothly.


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The “4PK” designation refers to the specific configuration of the belt itself. The 4 indicates that the belt has four ribs, while PK signifies that it is part of the multi-ribbed belt category, also known as serpentine belts. This type of belt is designed to drive multiple accessories such as the alternator, water pump, power steering pump, and air conditioning compressor. The use of multiple ribs provides a greater surface area for friction, enabling the belt to efficiently transfer power from the engine crankshaft to the various components.


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La courroie de distribution est une bande en caoutchouc, souvent renforcée par des fils en acier ou en fibre de verre, qui relie le vilebrequin à l'arbre à cames. Sa principale fonction est de synchroniser le mouvement des soupapes avec celui des pistons. Cela permet d'assurer que les soupapes s'ouvrent et se ferment au bon moment pendant le cycle de combustion. Un désalignement dans cette synchronisation peut entraîner des dommages importants, tels que la casse du moteur.


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