Part number 3289558, which replaces 3805919, is an 8PK1867 V ribbed belt fitting Cummins 6C8.3, ISB, ISC, ISL9, QSB4.5, QSB6.7, QSL9, NT743, and L9 engines. With 8 ribs and a 1867mm effective length, it serves a broad range of applications. OEM quality for proper fit and lasting durability.