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Replacement Joystick Rubber Boot

  • $23.00
  • or

Koyker Joystick Part 664541

Rubber boot replacement part for Koyker loader joysticks. 

Part fits the small loader valve where the joystick is attached directly to the valve. In older Koyker manuals, it was called the Dinoil valve.

Note: Part does not fit 2 & 3 spool joystick with the cables. Please see pictures for dimensions and example of boot with small loader valve.

Part Number: K664541

    This product does not qualify for returns. Please make sure this product is the correct size and will work for your equipment before purchasing. If you have questions or concerns, please contact our Koyker Customer Service Team at 1-800-456-1107.

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    We distribute products through local dealerships in your area. Prices and product availability may vary between dealerships.

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    We try our best to ship orders in the timeliest manner possible. Each product may have a different level of manufacturing demand and timeframe for shipment.

    If you have any questions or concerns about your order's status, please email us at to discuss.

    Shipping Rates

    We offer calculated shipping rates during the checkout process. USPS and UPS options are available if the product ordered qualifies for those options.

    International orders that equal 20 lbs. and less are charged a flat rate of $48.00. Orders that are 20.1 lbs. and over are charged a calculated shipping rate during the checkout process.

    Order Processing

    Business Days: Monday-Thursday.
    Holidays, Fridays, Saturdays and Sundays are not included in processing days.

    Ask a Question

    NOTE: All product specifications are subject to change or improvement without notice. We reserve the right to change product pricing at any time without further notice. Pricing may differ at the time of purchase.

    Contact Sioux Steel by emailing or by calling our customer service specialists at 1-800-557-4689 for additional information.

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    Ask a Question
    • I have a yanmar ym3110d with factory loader that needs a joystick boot will this fit my loader?

      Thank you for asking! Since this is not a Koyker valve, we would not guarantee it would fit. On a few of the product photos, however, there are dimensions listed to help determine if it could possibly fit.

    • I have a Koyker 120 that attached to a Yanmar 1720D. It looks about 20 years old. Would the boot fit that model? Thanks

      Greetings! Thank you for reaching out. Yes, this part should fit.

    • I have a Koyker 210 loader with joystick. Is K664541 the correct boot?

      Thank you for reaching out. Yes! This is the correct part.


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