If you’re rebuilding the engine on a Polaris Ranger, RZR, or ACE 570 from 2012 to 2020, this kit’s got what you need.

It includes crankshaft main bearings and seals—everything to get that bottom end fresh again.

The brand is JINFANNIBI, and it’s a direct fit for the 570cc models.

The part numbers you’ll want to know are 3514389 and 3610171—those are the OEM references.
So if you’re ordering parts, just cross-check those.

This kit works on UTVs and ATVs, so whether it’s a Ranger or an RZR, you’re covered.

The manufacturer offers a 1-year warranty, which is nice for peace of mind.

All parts are brand new, in original packaging, and made to OEM specs.
They’re from China, but they’re built to do the job.

No UPC listed, but that’s not a big deal.
If you’re tearing down a motor that’s got some hours, replacing these bearings and seals is a must to avoid oil leaks and crank walk.
It’s all about keeping that engine tight and reliable.

So grab this kit, get your Polaris back on the trail, and ride hard without worrying about the bottom end letting go.