Yamaha 90171-16001-00 - Castle Nut is a genuine Yamaha part. It is an original equipment replacement part for select Yamaha ATVs.

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Key Features & Benefits

• Genuine Yamaha OEM part, number 90171-16001-00.
• Fits 30 Yamaha models from 1987 to 2007.
• Direct replacement for the original part on the listed Yamaha models.

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Fits These Yamaha Models

• YFB250 Timberwolf 2x4 - 1992-1998
• YFB250FW Timberwolf 4x4 - 1994-1998, 2000
• YFM250 Bear Tracker - 1999-2004
• YFM250 Big Bear - 2007
• View More - see the Fitment tab for full compatibility details

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Frequently Asked Questions

What is Yamaha part 90171-16001-00?

90171-16001-00 is a genuine Yamaha castle nut for select Yamaha ATVs.

Is 90171-16001-00 a genuine Yamaha part?

Yes, 90171-16001-00 is a genuine Yamaha OEM part.

Which Yamaha models fit 90171-16001-00?

This part fits the YFB250 Timberwolf 2x4 (1992-1998), YFB250FW Timberwolf 4x4 (1994-1998, 2000), YFM250 Bear Tracker (1999-2004), YFM250 Big Bear (2007), plus 26 additional models. View the full fitment list in the Fitment tab to confirm your exact model and year before ordering.

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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.