Genuine Cummins Fan Drive Ball Bearing 3910739 For 5.9L 6.7L Engines 1989-2012

If your Cummins engine's cooling fan is wobbly or noisy, this is the part you need.

This is a genuine OEM Cummins fan drive ball bearing.

It fits a huge range of 5.9L and 6.7L Cummins engines from 1989 up to 2012.

The part number is 3910739 (also crosses to 04429639, 4429639, and 68038177AA).

It's the bearing that sits in the fan pulley hub, allowing the fan to spin freely.

It's a direct replacement part, so just press out the old one and press this new one in.

If you're rebuilding your fan clutch assembly or just replacing a worn bearing, this genuine Cummins part will keep your engine cooling right.