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This is a brand-new, genuine Cummins belt tensioner, part number 3691282.

It’s a direct fit for Cummins ISX15 and QSX15 diesel engines.

If you're dealing with a squeaky belt or poor tension, swapping out the tensioner is a smart fix.

It also crosses with numbers like 180885, 2871292, 3682946, and 4299091.

Built to OEM specs and backed by a 3-month warranty, this tensioner will keep your accessories running smoothly.

It’s not a performance part—just solid, reliable OEM replacement gear.

5 out of 5