New Belt Tensioner Assembly For Cummins 5.9L / 6.7L – Replaces 5270678, 0239233, 3973824

Is your Cummins engine making a squealing noise or throwing belts?

A worn tensioner is often the cause.

This new belt tensioner assembly is a direct replacement for Cummins 5.9L and 6.7L engines, with part numbers 5270678, 0239233, and 3973824.

It also interchanges with 4929688.

It's an unbranded unit, but it's built to OEM specs and comes with a 3-month warranty.

Installation is straightforward—just remove the old one and bolt this one on.

Keep your accessory drive running smoothly and avoid breakdowns.

Brand new in the box, ready to ship.

If your tensioner is bouncing or noisy, swap it out before it leaves you stranded.