I ordered a replacement kit from Replacement Kits for the front differential on my 2006 Kodiak 400 4WD ATV, and all the seals fit like they were supposed to. No way to assess durability at this time, but the leaks have stopped which is what I wanted done. The kit from this supplier are sooooo much cheaper than purchasing individual seals, or, especially OEM. I hope the seal material wears well. I wish I had found them earlier - would've saved some $$$ with other seals I replaced.