7 0 Cummins ISB 5.9L Belt Tensioner $70 USD Quality used belt tensioner for a Cummins 5.9 engine, backed by our standard warranty. Compatible Cummins engines - 4B3.9,6B5.9, 6C8.3, B4.5, B5.9 G, B5.9 GAS PLUS CM556, B6.7 CM2350 B135B,... Quantity3ConditionUsedStock Number30AT-3936213-STK MLS Number13615298CategoryBelt Tensioners Last Updated8/19/2025 LocationBig Lake, MN, US Sold ByQuality Bus and Truck Parts (844) 580-___ SHOWNUMBERCall Seller Email Seller Save More Info